101 results on '"alpaka"'
Search Results
2. Breeding Soundness Evaluation in Alpaca (Vicugna pacos) Males: A Long Retrospective Study of the Effects of Cystic Masses and Environmental Temperatures on Scrotal Measures.
- Author
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OZTUTAR STELLETTA, Fatma, DASKIN, Ali, TEKIN, Koray, VIVANCO MACKIE, Henry William, and STELLETTA, Calogero
- Subjects
- *
ALPACA , *ALKALINE phosphatase , *MALES , *RETROSPECTIVE studies , *SCROTUM , *TEMPERATURE - Abstract
Male alpacas have reproductive peculiarities that can influence the breeding soundness evaluation (BSE). This study was aimed to analyse the frequency of epididymal and testicular cystic lesions in alpacas (Vicugna pacos) retrospectively during different environmental temperatures. A total of 45 subject from 120 males were evaluated with linear probe (10 MHz; MyLab VetONE) between at 5 different alpaca farms in Italy. Semen was collected via artificial vagina and semen parameters were evaluated. Twenty % (9/45) of the males demonstrated the presence of abnormal testicular and epididymal cyst. Those cystic lesions could represent a simple result of drainage defect of the fluid produced (ectasia of the rete testis), congenitally derived from a probable hereditary pattern (2/9) or affecting epididymal structures (3/9). Cystic lesions can increase the scrotal volumetric asymmetry due to the most common mono)lateral lesions (P<0.05). Some diagnostic biochemical parameters such as the seminal plasma alkaline phosphatase was higher in affected males (P<0.05). Besides, environmental temperature can influence scrotal swelling independently by the presence of cystic lesions thus alter the scrotal volume. The ultrasonography can provide more specific information about the presence of epididymal and testicular anomalies influencing the BSE results. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
3. Application Experiences on a GPU-Accelerated Arm-based HPC Testbed
- Author
-
(0000-0003-0554-1036) Elwasif, W., (0000-0002-2590-5178) Godoy, W., Hagerty, N., (0000-0003-3023-7140) Harris, J. A., (0000-0002-5380-6951) Hernandez, O., (0000-0002-4229-7960) Joo, B., (0000-0001-5539-4017) Kent, P., (0000-0003-1952-7219) Lebrun-Grandie, D., Maccarthy, E., (0000-0002-4333-4145) Melesse Vergara, V. G., (0000-0002-5358-5415) Messer, B., Miller, R., (0000-0001-8745-7078) Oral, S., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8258-3881) Bussmann, M., (0000-0002-3844-3697) Debus, A., (0000-0001-8965-1149) Steiniger, K., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., (0000-0003-1750-7265) Bryngelson, S. H., (0000-0002-4781-9502) Le Berre, H., Radhakrishnan, A., (0000-0001-9841-4057) Young, J., (0000-0002-3560-9428) Chandrasekaran, S., (0000-0002-2773-4499) Ciorba, F., Simsek, O., (0000-0001-5211-2002) Clark, K., (0000-0003-1448-5304) Spiga, F., (0000-0003-3181-8190) Hammond, J., (0000-0001-7215-762X) Stone, J. E., (0000-0001-8533-1367) Hardy, D., Keller, S., (0000-0002-2549-9587) Piccinali, J.-G., (0000-0003-0661-5594) Trott, C., (0000-0003-0554-1036) Elwasif, W., (0000-0002-2590-5178) Godoy, W., Hagerty, N., (0000-0003-3023-7140) Harris, J. A., (0000-0002-5380-6951) Hernandez, O., (0000-0002-4229-7960) Joo, B., (0000-0001-5539-4017) Kent, P., (0000-0003-1952-7219) Lebrun-Grandie, D., Maccarthy, E., (0000-0002-4333-4145) Melesse Vergara, V. G., (0000-0002-5358-5415) Messer, B., Miller, R., (0000-0001-8745-7078) Oral, S., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8258-3881) Bussmann, M., (0000-0002-3844-3697) Debus, A., (0000-0001-8965-1149) Steiniger, K., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., (0000-0003-1750-7265) Bryngelson, S. H., (0000-0002-4781-9502) Le Berre, H., Radhakrishnan, A., (0000-0001-9841-4057) Young, J., (0000-0002-3560-9428) Chandrasekaran, S., (0000-0002-2773-4499) Ciorba, F., Simsek, O., (0000-0001-5211-2002) Clark, K., (0000-0003-1448-5304) Spiga, F., (0000-0003-3181-8190) Hammond, J., (0000-0001-7215-762X) Stone, J. E., (0000-0001-8533-1367) Hardy, D., Keller, S., (0000-0002-2549-9587) Piccinali, J.-G., and (0000-0003-0661-5594) Trott, C.
- Abstract
This paper assesses and reports the experience of ten teams working to port,validate, and benchmark several High Performance Computing applications on a novel GPU-accelerated Arm testbed system. The testbed consists of eight NVIDIA Arm HPC Developer Kit systems built by GIGABYTE, each one equipped with a server-class Arm CPU from Ampere Computing and A100 data center GPU from NVIDIA Corp. The systems are connected together using Infiniband high-bandwidth low-latency interconnect. The selected applications and mini-apps are written using several programming languages and use multiple accelerator-based programming models for GPUs such as CUDA, OpenACC, and OpenMP offloading. Working on application porting requires a robust and easy-to-access programming environment, including a variety of compilers and optimized scientific libraries. The goal of this work is to evaluate platform readiness and assess the effort required from developers to deploy well-established scientific workloads on current and future generation Arm-based GPU-accelerated HPC systems. The reported case studies demonstrate that the current level of maturity and diversity of software and tools is already adequate for large-scale production deployments.
- Published
- 2023
4. Performance portability for the CMS Reconstruction with Alpaka
- Author
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(0000-0002-6515-5666) Bocci, A., Czirkos, A., (0000-0002-9233-3632) Di Pilato, A., (0000-0003-3266-4357) Pantaleo, F., Hugo, G., (0000-0003-2675-1606) Kortelainen, M., Redjeb, W., (0000-0002-6515-5666) Bocci, A., Czirkos, A., (0000-0002-9233-3632) Di Pilato, A., (0000-0003-3266-4357) Pantaleo, F., Hugo, G., (0000-0003-2675-1606) Kortelainen, M., and Redjeb, W.
- Abstract
For CMS, Heterogeneous Computing is a powerful tool to face the computational challenges posed by the upgrades of the LHC, and will be used in production at the High Level Trigger during Run 3. In principle, to offload the computational work on non-CPU resources, while retaining their performance, different implementations of the same code are required. This would introduce code-duplication which is not sustainable in terms of maintainability and testability of the software. Performance portability libraries allow to write code once and run it on different architectures with close-to-native performance. The CMS experiment is evaluating performance portability libraries for the near term future.
- Published
- 2023
5. alpaka-group/alpaka: alpaka 1.0.0: The One Release
- Author
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(0000-0003-3396-6154) Bastrakov, S., (0000-0001-8970-5098) Bastrakova, K., (0000-0002-6515-5666) Bocci, A., (0000-0002-9233-3632) Di Pilato, A., (0000-0002-8218-3116) Ehrig, S., Ferragina, L., (0000-0001-7848-1690) Gruber, B. M., Kaever, C., (0000-0003-1761-2591) Kelling, J., (0000-0001-9457-1928) Martin-Haugh, S., (0000-0003-1576-6757) Perego, A., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., (0000-0001-9841-4057) Young, J., (0000-0003-3396-6154) Bastrakov, S., (0000-0001-8970-5098) Bastrakova, K., (0000-0002-6515-5666) Bocci, A., (0000-0002-9233-3632) Di Pilato, A., (0000-0002-8218-3116) Ehrig, S., Ferragina, L., (0000-0001-7848-1690) Gruber, B. M., Kaever, C., (0000-0003-1761-2591) Kelling, J., (0000-0001-9457-1928) Martin-Haugh, S., (0000-0003-1576-6757) Perego, A., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., and (0000-0001-9841-4057) Young, J.
- Abstract
The alpaka library is a header-only C++17 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism.
- Published
- 2023
6. Scapulohumeral subluxation and luxation in five alpacas.
- Author
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Laschinger J, Vidoni B, Schieder K, Altenbrunner-Martinek B, and Kofler J
- Subjects
- Male, Animals, Treatment Outcome, Camelids, New World
- Abstract
Introduction: The patient histories, findings from clinical examinations, diagnostic imaging techniques, the surgical procedures, complications, necropsy findings and the outcomes from five male or castrated male alpacas with scapulohumeral sub-/luxation are presented. These alpacas each had a history of severe forelimb lameness for one week (n: 1), four weeks (n: 2) and for two-to-three months (n: 2). Two of the five alpacas were euthanized due to severe osteoarthritic changes that developed during the two-to-three months of scapulohumeral luxation. Three alpacas were treated with open reduction and internal stabilisation by placing tension band sutures between one 4,5 mm cortical screw anchored in the scapular neck and two 4,5 mm cortical screws anchored in the greater humeral tubercle, all of them provided with washers. Post-surgery a carpal flexion sling was applied to avoid postoperative weight-bearing. An exercise programme was started after removal of the carpal sling and continued for 12 weeks. In one of the three alpacas an additional non-displaced fracture of the acromion occurred two weeks after surgery. In conclusion, all three treated alpacas had good-to-excellent long-term outcomes and are still alive 123, 15 and 12 months after surgical repair of the scapulohumeral sub-/luxation. As four weeks, or even up to three months elapsed in four of these five alpacas until a definitive diagnosis was made, more education should be provided to alpaca owners that severely lame animals should be presented to a veterinarian with adequate diagnostic possibilities and expertise as soon as possible in order not to compromise treatment success.
- Published
- 2024
- Full Text
- View/download PDF
7. BIOLOGICAL FEATURES AND PRODUCTIVITY OF ALPACA.
- Author
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Ponomareva, Arina I. and Sycheva, Irina N.
- Subjects
- *
BIOLOGICAL productivity , *ALPACA , *RAW materials , *SPECIES distribution , *WOOL - Abstract
Alpaca domestication took place more than 6000 years ago. The Indians of Peru discerned the potential in these animals, tamed them and began to breed. In the past, alpacas were called the "Inca gold": they could provide people with all the necessary resources for living. People dressed in skins, ate meat, spun wool and made clothes, and used manure as fuel. An increase in the number of livestock on the Russian Alpaca and Capri farms favorably affects the further distribution of alpaca as a species in Russia. The possibility of recognition of alpaca as an agricultural animal will be the sale of wool, its processing, as well as the rejection of imported raw materials. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
8. Application Experiences on a GPU-Accelerated Arm-based HPC Testbed
- Author
-
Wael Elwasif, William Godoy, Nick Hagerty, J. Austin Harris, Oscar Hernandez, Balint Joo, Paul Kent, Damien Lebrun-Grandie, Elijah Maccarthy, Veronica Melesse Vergara, Bronson Messer, Ross Miller, Sarp Oral, Sergei Bastrakov, Michael Bussmann, Alexander Debus, Klaus Steiniger, Jan Stephan, Rene Widera, Spencer Bryngelson, Henry Le Berre, Anand Radhakrishnan, Jeffrey Young, Sunita Chandrasekaran, Florina Ciorba, Osman Simsek, Kate Clark, Filippo Spiga, Jeff Hammond, Stone John, David Hardy, Sebastian Keller, Jean-Guillaume Piccinali, and Christian Trott
- Subjects
OpenACC ,HPC ,PIConGPU ,ARM ,GPU ,alpaka ,CUDA ,OpenMP ,NVIDIA - Abstract
This paper assesses and reports the experience of ten teams working to port,validate, and benchmark several High Performance Computing applications on a novel GPU-accelerated Arm testbed system. The testbed consists of eight NVIDIA Arm HPC Developer Kit systems built by GIGABYTE, each one equipped with a server-class Arm CPU from Ampere Computing and A100 data center GPU from NVIDIA Corp. The systems are connected together using Infiniband high-bandwidth low-latency interconnect. The selected applications and mini-apps are written using several programming languages and use multiple accelerator-based programming models for GPUs such as CUDA, OpenACC, and OpenMP offloading. Working on application porting requires a robust and easy-to-access programming environment, including a variety of compilers and optimized scientific libraries. The goal of this work is to evaluate platform readiness and assess the effort required from developers to deploy well-established scientific workloads on current and future generation Arm-based GPU-accelerated HPC systems. The reported case studies demonstrate that the current level of maturity and diversity of software and tools is already adequate for large-scale production deployments.
- Published
- 2023
- Full Text
- View/download PDF
9. Alpakade aretus ja embrüosiirdamise kasutusele võtmise võimalikkus Eestis
- Author
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Valdner, Anett Michelle, Jaakma, Ülle, and Kavak, Ants
- Subjects
ülevaateuuring ,embrüosiirdamine ,alpaka ,biotehnoloogilised sigimismeetodid ,magistritööd ,geneetiline aretusväärtus - Abstract
Loomaarstiõppe lõputöö Veterinaarmeditsiini õppekaval Viimaste aastate jooksul on alpakade pidamine Eestis muutunud populaarsemaks, mistõttu alpakade aretuse teemal on üha sagedamini pöördutud veterinaararstide poole. Alpakakarja suurendamiseks kasutatakse ainult loomulikku paaritamist, sest nii veterinaararstidel kui ka alpakakasvatajatel puuduvad teadmised alpakade biotehnoloogiliste sigimismeetodite kasutamisest. Teoreetiliselt on biotehnoloogilisi sigimismeetodeid võimalik kasutada alpakade geneetilise aretusväärtuse tõstmiseks ilma loomade transportimiseta, parandades sellega loomade heaolu ja vähendades haiguste leviku riski. Praegu on kunstliku seemendamise tehnoloogia alpakadel alles algusjärgus ja raskesti kättesaadav. Embrüosiirdamise tehnoloogiaid ei kasutata Euroopas alpakakasvatustes aktiivselt, ent mujal maailmas üksikutes farmides kasutatakse seda aretusprogrammi osana. Ülevaate saamiseks alpakade aretusest ja selle arengusuundadest Eestis viidi läbi ülevaateuuring Eesti alpakakasvatajate seas. Uuringu valimisse kaasati 9 uuringu küsimustele vastanud alpakafarmi (vastanute osakaal 60%). Uuringus koguti andmeid praegusel ajal kasutatavate sigimismeetodite kohta ja lisaks uuriti aretajate huvi biotehnoloogiliste sigimismeetodite, eelkõige embrüosiirdamise tehnoloogiate vastu. Valdav osa Eesti alpakafarmidest on väikesed farmid, milles on vähem kui 15 looma. Enamik vastanutest (77,8%) peavad alpakasid hobiloomadena, millele järgnevad loomade pidamine villa tootmiseks (33,3%) ja tõulooma aretuseks (33,3%). Paaritusmeetoditest on kasutusel võrdselt nii vabapaaritus kui ka käestpaaritus. Emase alpaka seksuaalse vastuvõtlikkuse testimine on Eestis enim kasutatav tiinuse tuvastamise meetod. Transrektaalset ultraheli meetodit, mis on levinud teistel põllumajandusliikidel, alpakadel ei kasutata. Valdav enamus alpakakasvatajatest (77,8%) olid huvitatud biotehnoloogiliste sigimismeetodite kasutamisest. Embrüote importimise ja siirdamise teenuse eest oldi nõus tasuma kuni 1200€ ning embrüote loputuse ja siirdamise teenuse eest kuni 900€. Uuringu tulemused peegeldavad suurt huvi alpakade embrüosiirdamise vastu Eestis ja vajadust veterinaararstide järele selle valdkonna teadmiste omandamiseks. Sobiva embrüosiirdamise meetodi õppimiseks ja selle kasutusele võtmiseks Eestis, osales autor praktilisel koolitusel Cas-Cad-Nac farmis (Perkinsville, Vermont, Ameerika Ühendriigid). Õpitud metoodika põhineb üksikovulatsiooni protokollil, mis on lihtsam ja odavam kui superovulatsiooni protokollide kasutamine. Nimetatud metoodika suurendab ka võimalust saada kvaliteetsemaid embrüoid. Autor usub, et uurimus on kasulik kõikidele inimestele, kes on huvitatud alpakade aretusest ja alpakade embrüosiirdamise tehnoloogiatest. Over the last few years the keeping of alpacas in Estonia has become increasingly attractive, resulting in veterinarians being consulted more frequently about alpaca breeding. Currently, only natural mating is used to increase an alpaca herd because veterinarians and alpaca breeders lack knowledge regarding use of reproductive biotechnologies in alpacas. Assisted reproductive technologies theoretically can be used to accelerate the genetic merit of an alpaca herd without the need to import live animals, thus reducing the risk of spreading diseases and improving animal welfare by minimizing animal transport over long distances. At present, however, artificial insemination technology is not well developed or readily available in alpacas. Embryo transfer techologies are not utilized routinely in European alpaca herds, but in other parts of the world they are being used as a part of breeding program. To obtain a current overview of alpaca breeding and to acquire information about the future direction it could be moving in Estonia, a surveillance survey was conducted among the alpaca breeders. With a response rate of 60%, 9 alpaca farms were included in the survey. Data were collected on present alpaca breeding approaches as well as on breeder interest in assisted reproductive technologies, especially embryo transfer techologies. The vast majority of alpaca farms in Estonia are small with fewer than 15 animals. Most respondents (77,8%) kept their alpacas as hobby animals, followed by keeping for fiber production (33,3%) and breeding (33,3%). All the farms used natural mating; 50% of the animals are bred in a group, and 50% of the animals are hand mated. The alpaca female sexual receptivity test is the most commonly used method in Estonia for detecting pregnancy, whereas transrectal ultrasound (commonly used in other species) is not used. The vast majority of alpaca farmers (77,8%) were interested in assisted reproductive techologies. For buying, importing and transferring embryos, the farmers were willing to pay up to 1200€ and for embryo collection and transferring, up to 900€. The survey results reflect a great interest in alpaca embryo transfer in Estonia and the need for veterinarians to acquire knowledge in that field. A practical training was conducted at Cas-Cad-Nac farm (Perkinsville, Vermont, United States of America) to practice a suitable method for conducting embryo transfers in Estonia. The chosen method based on the single ovulation protocol, which is easier and cheaper than using superovulation protocols, as well as enhances the possibility of recovering embryos of a higher quality grade. The author believes that this research is valuable to all persons who are interested in alpaca breeding and alpaca embryo transfer technologies.
- Published
- 2023
10. Performance Portability with alpaka
- Author
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(0000-0001-7839-4386) Stephan, J., (0000-0002-8258-3881) Bussmann, M., (0000-0001-7839-4386) Stephan, J., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
The alpaka library is a header-only C++17 abstraction library for development across hardware accelerators (CPUs, GPUs, FPGAs). Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism. In this poster we will show the concepts behind alpaka, how it is mapped to the various underlying hardware models, and show the features introduced over the last year. In addition, we will also present the software ecosystem surrounding alpaka.
- Published
- 2022
11. Evaluating GPU Programming Models for the LUMI Supercomputer
- Author
-
(0000-0002-5571-4823) Markomanolis, G. S., Alpay, A., (0000-0001-9841-4057) Young, J., (0000-0002-8634-4634) Klemm, M., (0000-0001-6259-7453) Malaya, N., (0000-0003-1597-0811) Esposito, A., Heikonen, J., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-3844-3697) Debus, A., (0000-0003-4861-5584) Kluge, T., (0000-0001-8965-1149) Steiniger, K., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., (0000-0002-8258-3881) Bussmann, M., (0000-0002-5571-4823) Markomanolis, G. S., Alpay, A., (0000-0001-9841-4057) Young, J., (0000-0002-8634-4634) Klemm, M., (0000-0001-6259-7453) Malaya, N., (0000-0003-1597-0811) Esposito, A., Heikonen, J., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-3844-3697) Debus, A., (0000-0003-4861-5584) Kluge, T., (0000-0001-8965-1149) Steiniger, K., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
It is common in the HPC community that the achieved performance with just CPUs is limited for many computational cases. The EuroHPC pre-exascale and the coming exascale systems are mainly focused on accelerators, and some of the largest upcoming supercomputers such as LUMI and Frontier will be powered by AMD Instinct™ accelerators. However, these new systems create many challenges for developers who are not familiar with the new ecosystem or with the required programming models that can be used to program for heterogeneous architectures. In this paper, we present some of the more well-known programming models to program for current and future GPU systems. We then measure the performance of each approach using a benchmark and a mini-app, test with various compilers, and tune the codes where necessary. Finally, we compare the performance, where possible, between the NVIDIA Volta (V100), Ampere (A100) GPUs, and the AMD MI100 GPU.
- Published
- 2022
12. Introduction to Software Portability Among Heterogeneous Architectures
- Author
-
(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
In this talk we first introduce the concept of heterogeneous computing systems and then show the difficulties that lie in programming them. We present the different workload patterns that are suitable for different hardware types. In the end propose the alpaka kernel abstraction library as a possible solution to these challenges.
- Published
- 2022
13. The alpaka SYCL back-end
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
In this talk the kernel abstraction library alpaka is briefly introduced. Afterwards the technical details of the alpaka SYCL back-end are presented.
- Published
- 2022
14. Modeling and understanding laser-plasma experiments through high-fidelity 3D simulations
- Author
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(0000-0001-7990-9564) Pausch, R., Bastrakov, S., Carstens, F.-O., Günzl, J., Lebedev, A., Steiniger, K., Widera, R., Voß, M. S., Bussmann, M., Schramm, U., Debus, A., (0000-0001-7990-9564) Pausch, R., Bastrakov, S., Carstens, F.-O., Günzl, J., Lebedev, A., Steiniger, K., Widera, R., Voß, M. S., Bussmann, M., Schramm, U., and Debus, A.
- Abstract
A overview over all large-scale simulation efforts of the laser electron acceleration team covering both recent simulations and new technical developments.
- Published
- 2022
15. Exploiting Heterogeneous Architectures: Applications and Lessons Learned
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
In this talk we show the benefits of using performance portability layers such as alpaka in real-world HPC applications. Using PIConGPU and the CMS Patatrack experiment as examples we demonstrate the minimal porting effort achieved by using alpaka when encountering new and previously unknown hardware architectures.
- Published
- 2022
16. alpaka, LLAMA and More - Solutions for Exascale Performance Portability
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
Heterogeneous hardware landscapes will define the Exascale era. At the same time, keeping scientific libraries and applications portable across different hardware setups while maintaining high performance is no trivial matter. Vendor-provided programming platforms often cannot target accelerators from other vendors, and different hardware types like CPUs, GPUs and FPGAs require differently tuned algorithms for optimal performance. A solution to these issues can be found in abstraction layers that provide the user with a single programming interface while still maintaining portability and performance. In this talk, we introduce the Caravan HPC ecosystem. With the alpaka abstraction library for accelerator programming at its core and many sibling libraries for related use cases --- such as the memory access abstraction layer LLAMA or the C++ primitives library vikunja --- the Caravan ecosystem is an ideal choice for scientists and programmers setting out to tackle the challenges of the Exascale era.
- Published
- 2022
17. alpaka-group/alpaka: alpaka 0.9.0: The SYCL Complex
- Author
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(0000-0003-3396-6154) Bastrakov, S., (0000-0002-6515-5666) Bocci, A., (0000-0002-9233-3632) Di Pilato, A., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1761-2591) Kelling, J., (0000-0003-3266-4357) Pantaleo, F., (0000-0001-7839-4386) Stephan, J., (0000-0001-8822-0929) Vyskocil, J., (0000-0003-1642-0459) Widera, R., Worpitz, B., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-6515-5666) Bocci, A., (0000-0002-9233-3632) Di Pilato, A., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1761-2591) Kelling, J., (0000-0003-3266-4357) Pantaleo, F., (0000-0001-7839-4386) Stephan, J., (0000-0001-8822-0929) Vyskocil, J., (0000-0003-1642-0459) Widera, R., and Worpitz, B.
- Abstract
The alpaka library is a header-only C++17 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism.
- Published
- 2022
18. Performance portability for the CMS Reconstruction with Alpaka
- Author
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Bocci, A., Czirkos, A., Di Pilato, A., Pantaleo, F., Hugo, G., Kortelainen, M., and Redjeb, W.
- Subjects
History ,parallel programming ,CMS ,software portability ,GPGPU ,offloading ,alpaka ,CUDA ,LHC ,heterogeneous programming ,C++ ,Computer Science Applications ,Education - Abstract
For CMS, Heterogeneous Computing is a powerful tool to face the computational challenges posed by the upgrades of the LHC, and will be used in production at the High Level Trigger during Run 3. In principle, to offload the computational work on non-CPU resources, while retaining their performance, different implementations of the same code are required. This would introduce code-duplication which is not sustainable in terms of maintainability and testability of the software. Performance portability libraries allow to write code once and run it on different architectures with close-to-native performance. The CMS experiment is evaluating performance portability libraries for the near term future.
- Published
- 2023
- Full Text
- View/download PDF
19. Performance Portability with alpaka
- Author
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Stephan, J. and Bussmann, M.
- Subjects
GPGPU ,HPC ,alpaka ,C++ ,FPGA ,performance portability - Abstract
The alpaka library is a header-only C++17 abstraction library for development across hardware accelerators (CPUs, GPUs, FPGAs). Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism. In this poster we will show the concepts behind alpaka, how it is mapped to the various underlying hardware models, and show the features introduced over the last year. In addition, we will also present the software ecosystem surrounding alpaka.
- Published
- 2022
20. alpaka, LLAMA and More - Solutions for Exascale Performance Portability
- Author
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Stephan, J.
- Subjects
RedGrapes ,cupla ,bactria ,vikunja ,alpaka ,OpenMP ,GPU programming ,LLAMA ,heterogeneous computing ,C++ - Abstract
Heterogeneous hardware landscapes will define the Exascale era. At the same time, keeping scientific libraries and applications portable across different hardware setups while maintaining high performance is no trivial matter. Vendor-provided programming platforms often cannot target accelerators from other vendors, and different hardware types like CPUs, GPUs and FPGAs require differently tuned algorithms for optimal performance. A solution to these issues can be found in abstraction layers that provide the user with a single programming interface while still maintaining portability and performance. In this talk, we introduce the Caravan HPC ecosystem. With the alpaka abstraction library for accelerator programming at its core and many sibling libraries for related use cases --- such as the memory access abstraction layer LLAMA or the C++ primitives library vikunja --- the Caravan ecosystem is an ideal choice for scientists and programmers setting out to tackle the challenges of the Exascale era.
- Published
- 2022
21. Minerální metabolismus kamelidů
- Author
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Menšíková, Petra
- Subjects
nutrition ,lama ,alpaca ,makroprvky ,camel ,macrominerals ,výživa ,velbloud ,minerální látky ,alpaka ,minerals - Abstract
The aim of the bachelor's thesis was to provide an overview of the zoological classification of camelids, their physiological and anatomical specificities – with a focus on the specifics of mineral metabolism. The basic mineral substances, their importance and recommended proportion in the diet of camelids and health disorders caused by their excess or deficiency are described in the paper. Furthermore, the sources and requirements of these minerals, the possibilities of their supplementation and the evaluation of their reserves in the organism are described. In the practical part, the evaluation of the supply of mineral substances to the organism of alpacas bred in the conditions of the Czech Republic based on blood tests is elaborated and the values are compared with the recommendations in the literature. Based on the biochemical analyses of the examined animals, no major deficiencies were found, the situation has improved as compared to previously published results and the animals are sufficiently supplied with minerals.
- Published
- 2022
22. Parametry jakości włókna alpak jako surowca dla przemysłu tekstylnego.
- Author
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VILLAVICENCIO, ANNA MORALES and NIŻNIKOWSKI, ROMAN
- Abstract
Copyright of Przeglad Wlokienniczy is the property of Wydawnictwo Czasopism i Ksiazek Technicznych and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
23. Exascale Plasma-Accelerator Simulations with PIConGPU
- Author
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(0000-0002-3844-3697) Debus, A., (0000-0003-4861-5584) Kluge, T., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0001-8965-1149) Steiniger, K., (0000-0001-6994-2475) Garten, M., Lebedev, A., (0000-0001-7990-9564) Pausch, R., Meyer, F., (0000-0001-7042-5088) Pöschel, F., (0000-0003-1761-2591) Kelling, J., (0000-0002-9935-4428) Juckeland, G., (0000-0001-7839-4386) Stephan, J., Herten, A., Chandrasekaran, S., Leinhauser, M., Young, J., Davis, J. H., Diaz, J. M., Huebl, A., Hernandez, B., Chatterjee, R., Rogers, D., (0000-0002-8258-3881) Bussmann, M., (0000-0002-3844-3697) Debus, A., (0000-0003-4861-5584) Kluge, T., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0001-8965-1149) Steiniger, K., (0000-0001-6994-2475) Garten, M., Lebedev, A., (0000-0001-7990-9564) Pausch, R., Meyer, F., (0000-0001-7042-5088) Pöschel, F., (0000-0003-1761-2591) Kelling, J., (0000-0002-9935-4428) Juckeland, G., (0000-0001-7839-4386) Stephan, J., Herten, A., Chandrasekaran, S., Leinhauser, M., Young, J., Davis, J. H., Diaz, J. M., Huebl, A., Hernandez, B., Chatterjee, R., Rogers, D., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
* Next-generation Laser-plasma Accelerators (protons and electrons) require fast and predictive 3D particle-in-cell simulations at the exascale. * PIConGPU is performance portable & available as a single source through Alpaka. * PIConGPU scales to the largest supercomputers of the world, leveraging Alpaka for running on the latest GPUs from NVIDIA (A100) and AMD (MI100) * HIP & OpenMP 5+ backends now available on Alpaka and PIConGPU. * PIConGPU performance scales on Juwels Booster and Summit machines. Starting from typical simulation applications and requirements in laser-plasma accelerators, we present the PIConGPU software stack and current scaling results on large-scale compute clusters. We show results from the Frontier CAAR project and the JUWELS Booster early-access project.
- Published
- 2021
24. Introduction to alpaka
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
This talk covers the alpaka parallel programming library as well as the surrounding ecosystem. It features an introduction to the alpaka programming model, a presentation of the ecosystem libraries cupla, Vikunja, LLAMA and bactria, and a glimpse into the future.
- Published
- 2021
25. Performance Portability with alpaka
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism. In this lecture we will cover the basics of how to program HPC applications with alpaka in a portable yet performant way and have a look at the software ecosystem surrounding alpaka.
- Published
- 2021
26. alpaka, LLAMA & Vc: An ecosystem for performance portable parallelism
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
This talk covers the alpaka ecosystem for performance portable parallel programming in HPC and simulation environments. It focuses on alpaka, LLAMA and Vc, their interactions with each other and their impact on the C++ programming language.
- Published
- 2021
27. alpaka-group/alpaka: alpaka 0.7.0: Maximum Warp
- Author
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Worpitz, B., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1761-2591) Kelling, J., (0000-0002-5187-1768) Rogers, D. M., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., Worpitz, B., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1761-2591) Kelling, J., (0000-0002-5187-1768) Rogers, D. M., (0000-0001-7839-4386) Stephan, J., and (0000-0003-1642-0459) Widera, R.
- Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism.
- Published
- 2021
28. alpaka-group/alpaka: Version 0.6.0: New Backends and Useability Improvements
- Author
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Worpitz, B., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0003-1943-7141) Hübl, A., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1761-2591) Kelling, J., Krude, J., (0000-0001-7839-4386) Stephan, J., Worpitz, B., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0003-1943-7141) Hübl, A., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1761-2591) Kelling, J., Krude, J., and (0000-0001-7839-4386) Stephan, J.
- Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction of the underlying levels of parallelism.
- Published
- 2021
29. alpaka-group/alpaka: Version 0.6.1: Fix CPU shared memory and rework OpenMP scheduler configuration
- Author
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Worpitz, B., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1761-2591) Kelling, J., Krude, J., (0000-0001-7839-4386) Stephan, J., (0000-0003-1642-0459) Widera, R., Worpitz, B., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1761-2591) Kelling, J., Krude, J., (0000-0001-7839-4386) Stephan, J., and (0000-0003-1642-0459) Widera, R.
- Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism.
- Published
- 2021
30. alpaka-group/alpaka: alpaka 0.8.0: Random Access Memories
- Author
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(0000-0003-3396-6154) Bastrakov, S., (0000-0002-9233-3632) Di Pilato, A., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1761-2591) Kelling, J., (0000-0001-7839-4386) Stephan, J., (0000-0001-8822-0929) Vyskocil, J., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-9233-3632) Di Pilato, A., (0000-0002-8218-3116) Ehrig, S., (0000-0001-7848-1690) Gruber, B. M., (0000-0003-1761-2591) Kelling, J., (0000-0001-7839-4386) Stephan, J., (0000-0001-8822-0929) Vyskocil, J., and (0000-0003-1642-0459) Widera, R.
- Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism.
- Published
- 2021
31. Exascale Plasma-Accelerator Simulations with PIConGPU
- Author
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Debus, A., Kluge, T., Widera, R., Bastrakov, S., Steiniger, K., Garten, M., Lebedev, A., Pausch, R., Meyer, F., Pöschel, F., Kelling, J., Juckeland, G., Stephan, J., Herten, A., Chandrasekaran, S., Leinhauser, M., Young, J., Davis, J. H., Diaz, J. M., Huebl, A., Hernandez, B., Chatterjee, R., Rogers, D., and Bussmann, M.
- Subjects
exascale computing ,Alpaka ,PIC simulation ,PIConGPU ,HPC ,laser-plasma physics ,performance portability - Abstract
* Next-generation Laser-plasma Accelerators (protons and electrons) require fast and predictive 3D particle-in-cell simulations at the exascale. * PIConGPU is performance portable & available as a single source through Alpaka. * PIConGPU scales to the largest supercomputers of the world, leveraging Alpaka for running on the latest GPUs from NVIDIA (A100) and AMD (MI100) * HIP & OpenMP 5+ backends now available on Alpaka and PIConGPU. * PIConGPU performance scales on Juwels Booster and Summit machines. Starting from typical simulation applications and requirements in laser-plasma accelerators, we present the PIConGPU software stack and current scaling results on large-scale compute clusters. We show results from the Frontier CAAR project and the JUWELS Booster early-access project.
- Published
- 2021
32. alpaka-group/alpaka: alpaka 0.8.0: Random Access Memories
- Author
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Bastrakov, S., Di Pilato, A., Ehrig, S., Gruber, B. M., Kelling, J., Stephan, J., Vyskocil, J., and Widera, R.
- Subjects
HIP ,HPC ,GPU ,alpaka ,CUDA ,OpenMP ,heterogeneous computing ,C++ ,performance portability - Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. Its aim is to provide performance portability across accelerators through the abstraction (not hiding!) of the underlying levels of parallelism.
- Published
- 2021
33. The Road to Exascale
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
Exascale is the next big step in the field of high-performance computing. However, the hardware configurations of supercomputers around the world are becoming increasingly heterogeneous. Programmers have to take into account varying processor architectures (x86, ARM, RISC-V, ...) as well as different accelerator types (multicore CPUs, GPUs, FPGAs, ...) and the accompanying tools. Our goal is a portable stack of C++ libraries and tools. Together they shall form an ecosystem which abstracts away the differences between hardware configurations without sacrificing performance.
- Published
- 2020
34. Lessons Learned Developing Frameworks with SYCL
- Author
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(0000-0001-7839-4386) Stephan, J. and (0000-0001-7839-4386) Stephan, J.
- Abstract
alpaka is a header-only C++ library for developing portable high-performance programs. Much like SYCL, it aims to abstract away the differences between accelerator types and vendors. In 2019 an experimental SYCL backend was developed in order to target FPGAs. In my talk I will focus on the challenges I faced during the SYCL backend development as well as conceptual differences between SYCL and other heterogeneous programming platforms.
- Published
- 2020
35. alpaka Parallel Programming - Online Tutorial
- Author
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(0000-0001-7839-4386) Stephan, J., (0000-0003-3396-6154) Bastrakov, S., (0000-0003-1642-0459) Widera, R., (0000-0002-8218-3116) Ehrig, S., (0000-0002-8258-3881) Bussmann, M., (0000-0001-7839-4386) Stephan, J., (0000-0003-3396-6154) Bastrakov, S., (0000-0003-1642-0459) Widera, R., (0000-0002-8218-3116) Ehrig, S., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
Alpaka (Abstraction Library for Parallel Kernel Acceleration) provides a library and tools for programming compute accelerators on a device agnostic level. This online tutorial will give an introduction to Alpaka combined with online exercises.
- Published
- 2020
36. Pedal to the Metal: Designing a Scalable Particle-in-Cell Code PIConGPU
- Author
-
(0000-0003-3396-6154) Bastrakov, S., (0000-0003-1642-0459) Widera, R., (0000-0002-3844-3697) Debus, A., (0000-0001-6994-2475) Garten, M., (0000-0001-7990-9564) Pausch, R., (0000-0001-8965-1149) Steiniger, K., (0000-0003-1943-7141) Hübl, A., (0000-0002-8258-3881) Bussmann, M., (0000-0003-3396-6154) Bastrakov, S., (0000-0003-1642-0459) Widera, R., (0000-0002-3844-3697) Debus, A., (0000-0001-6994-2475) Garten, M., (0000-0001-7990-9564) Pausch, R., (0000-0001-8965-1149) Steiniger, K., (0000-0003-1943-7141) Hübl, A., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
PIConGPU is an open-source Particle-in-Cell simulation code for the Exascale era. It implements a wide range of core Particle-in-Cell numerical schemes and extensions, in-situ diagnostics, and high-performance I/O. With a single source code base, PIConGPU runs on a variety of modern hardware, including both CPUs and GPUs, and scales from a single workstation up to the largest supercomputers. Following up the two recent talks concerning physical and numerical features of PIConGPU, this talk will focus on the computer science and software design aspects of the code and the underlying software stack. The talk concerns PIConGPU core data structures, typical patterns of parallel processing, and software design approach to enable efficient and scalable single-source implementation. It also presents performance and scaling results on the Summit supercomputer.
- Published
- 2020
37. PIConGPU - a highly-parallel 3D3V particle-in-cell code
- Author
-
Pausch, R., Bastrakov, S., Debus, A., Garten, M., Huebl, A., Marre, B.-E., Meyer, F., Steinger, K., Widera, R., Bussmann, M., Pausch, R., Bastrakov, S., Debus, A., Garten, M., Huebl, A., Marre, B.-E., Meyer, F., Steinger, K., Widera, R., and Bussmann, M.
- Abstract
This talk will introduce the basic concepts of how particle-in-cell codes model plasma dynamics and discuss their implementation in the open-source code PIConGPU, focusing on how parallelism can be exploited to enable efficient scaling on today's largest HPC systems. Furthermore, the problem of IO limitations with larger simulations is discussed and the plugin method for in-situ data analysis in PIConGPU is presented to overcome these limitations. Finally, an overview of different physics cases simulated with PIConGPU is presented, ranging from small-scale laser-plasma accelerators to plasma jets in astrophysics.
- Published
- 2020
38. alpaka-group/alpaka: alpaka 0.5.0: C++14
- Author
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Worpitz, B., (0000-0002-6702-2015) Matthes, A., Zenker, E., (0000-0003-1943-7141) Hübl, A., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8218-3116) Ehrig, S., (0000-0003-1761-2591) Kelling, J., Krude, J., (0000-0001-7839-4386) Stephan, J., Werner, M., Worpitz, B., (0000-0002-6702-2015) Matthes, A., Zenker, E., (0000-0003-1943-7141) Hübl, A., (0000-0003-1642-0459) Widera, R., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-8218-3116) Ehrig, S., (0000-0003-1761-2591) Kelling, J., Krude, J., (0000-0001-7839-4386) Stephan, J., and Werner, M.
- Abstract
The alpaka library is a header-only C++14 abstraction library for accelerator development. The release 0.5.0 is providing support for AMD HIP and dropped support for C++11, CUDA 8, gcc 4.9 and boost < 1.65.1.
- Published
- 2020
39. The presence of immunoreactive cyclooxygenases in the ductuli efferentes and epididymis of prepubertal and adult alpaca (Lama pacos).
- Author
-
Parillo, Francesco, Catone, Giuseppe, Capezzone, Chiara, and Zerani, Massimo
- Abstract
The article discusses a study on the cell specific expression of cyclooxygenase (COX) enzymes, COX1 and COX2, in the ductuli efferentes and epididymis of prepubertal and adult alpaca. Topics discussed include an increase in the immunsignals for COX1 in the cytoplasm of epithelial cells and immunoreactivity for COX2 in prepubertal alpaca in adult animals. The role of COXs in the pubertal development of the excurrent duct system of the alpaca is noted.
- Published
- 2013
40. Sonographische Untersuchung am Hoden des Alpaka (Vicugna pacos)
- Author
-
Heß, Florian and Justus Liebig University Giessen
- Subjects
Sonographie ,Neuweltkameliden ,alpaca ,sonographic examination ,Kamelide ,Alpaka ,testicles ,Hoden ,ddc:630 ,new-world camelids ,camelids - Abstract
Ziel der vorliegenden Arbeit war es, die sonographische Hodenbeurteilung beim Alpakahengst zu verbessern und die Sonographie zur Volumenbestimmung des Alpakahodens und damit letztendlich in der klinisch-andrologischen Untersuchung zu etablieren. Ferner sollten Ergebnisse der Graustufenanalyse am Alpakahoden erhoben und herausgearbeitet werden, welche Werte gesunde Hoden in der Graustufenanalyse annehmen und ob sich pathologisch veränderte Hoden anhand der Graustufenanalyse von gesunden Hoden unterscheiden lassen.Insgesamt standen 61 Alpakahengste im Alter zwischen 9 Monaten und 8 Jahren für die Studie zur Verfügung. Die Tiere wurden einer klinisch-andrologischen Untersuchung unterzogen und neben der konventionellen B-Mode Sonographie wurde zusätzlich eine quantitative Graustufenanalyse durchgeführt. Die Volumenberechnung erfolgte auf Basis der Vermessung der Hoden per Ultraschall sowie der Vermessung der Hoden mittels Schublehre (nach Kastration). Die Volumenbestimmung basierte auf der Wasserverdrängung der Hoden (Goldstandard)., The aim of the present study was to improve the sonographic assessment of the testicles in the alpaca stallion and to establish the sonography for determination of the testicle volume of the alpaca and ultimately in the clinical andrological examination. Furthermore, the results of the gray scale analysis at the alpaca testicle and the values of healthy testicle in the gray scale analysis should be examined and worked out. It also should be checked whether pathological testicles can be distinguished of healthy testicles by gray scale analysis. A total of 61 alpaca stallions aged between 9 month and 8 years were available for the study. The animals were subjected to a clinical andrological examination and a quantitative gray scale analysis was carried out in addition to the conventional B-mode sonography. The volume calculation takes place on the basis of testicle measurement by ultrasound as well as the measurement by sliding caliper after castration. The volume determination was based on the water displacement of the testicles (gold standard).
- Published
- 2020
- Full Text
- View/download PDF
41. Sonographic examination of the alpacas testicles (vicugna pacos)
- Author
-
HeÃ, Florian and Klinik für Geburtshilfe, Gynäkologie und Andrologie der GroÃ- und Kleintiere mit Tierärztlicher Ambulanz
- Subjects
Sonographie ,Neuweltkameliden ,alpaca ,sonographic examination ,Kamelide ,Alpaka ,testicles ,Hoden ,ddc:630 ,new-world camelids ,Agriculture ,camelids - Abstract
Ziel der vorliegenden Arbeit war es, die sonographische Hodenbeurteilung beim Alpakahengst zu verbessern und die Sonographie zur Volumenbestimmung des Alpakahodens und damit letztendlich in der klinisch-andrologischen Untersuchung zu etablieren. Ferner sollten Ergebnisse der Graustufenanalyse am Alpakahoden erhoben und herausgearbeitet werden, welche Werte gesunde Hoden in der Graustufenanalyse annehmen und ob sich pathologisch veränderte Hoden anhand der Graustufenanalyse von gesunden Hoden unterscheiden lassen. Insgesamt standen 61 Alpakahengste im Alter zwischen 9 Monaten und 8 Jahren für die Studie zur Verfügung. Die Tiere wurden einer klinisch-andrologischen Untersuchung unterzogen und neben der konventionellen B-Mode Sonographie wurde zusätzlich eine quantitative Graustufenanalyse durchgeführt. Die Volumenberechnung erfolgte auf Basis der Vermessung der Hoden per Ultraschall sowie der Vermessung der Hoden mittels Schublehre (nach Kastration). Die Volumenbestimmung basierte auf der Wasserverdrängung der Hoden (Goldstandard). The aim of the present study was to improve the sonographic assessment of the testicles in the alpaca stallion and to establish the sonography for determination of the testicle volume of the alpaca and ultimately in the clinical andrological examination. Furthermore, the results of the gray scale analysis at the alpaca testicle and the values of healthy testicle in the gray scale analysis should be examined and worked out. It also should be checked whether pathological testicles can be distinguished of healthy testicles by gray scale analysis. A total of 61 alpaca stallions aged between 9 month and 8 years were available for the study. The animals were subjected to a clinical andrological examination and a quantitative gray scale analysis was carried out in addition to the conventional B-mode sonography. The volume calculation takes place on the basis of testicle measurement by ultrasound as well as the measurement by sliding caliper after castration. The volume determination was based on the water displacement of the testicles (gold standard).
- Published
- 2020
42. Large-scale simulations of plasma acceleration
- Author
-
(0000-0001-7990-9564) Pausch, R., (0000-0003-1943-7141) Hübl, A., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-3844-3697) Debus, A., (0000-0001-6994-2475) Garten, M., (0000-0002-6702-2015) Matthes, A., (0000-0001-8965-1149) Steiniger, K., (0000-0003-0390-7671) Schramm, U., (0000-0003-1642-0459) Widera, R., Zenker, E., (0000-0002-8258-3881) Bussmann, M., (0000-0001-7990-9564) Pausch, R., (0000-0003-1943-7141) Hübl, A., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-3844-3697) Debus, A., (0000-0001-6994-2475) Garten, M., (0000-0002-6702-2015) Matthes, A., (0000-0001-8965-1149) Steiniger, K., (0000-0003-0390-7671) Schramm, U., (0000-0003-1642-0459) Widera, R., Zenker, E., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
A brief presentation of the MuT/DMA activities of the Computational radiation group and solutions that might be of interest for the Matter in the Universe community.
- Published
- 2019
43. Start-to-end simulations of L|PWFA hybrid accelerator experiments using PIConGPU
- Author
-
(0000-0001-7990-9564) Pausch, R., (0000-0002-3844-3697) Debus, A., (0000-0001-8965-1149) Steiniger, K., (0000-0001-6994-2475) Garten, M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1642-0459) Widera, R., (0000-0003-0340-9963) Kurz, T., Schöbel, S., (0000-0001-9129-4208) Couperus Cabadağ, J. P., Chang, Y.-Y., (0000-0001-9759-1166) Köhler, A., (0000-0003-4362-3438) Zarini, O., Heinemann, T., Gilljohann, M. F., Ding, H., Götzfried, J., Döpp, A., Kononenko, O., Raj, G., Martines De La Ossa, A., Assmann, R., Hidding, B., Karsch, S., Code, S., (0000-0002-4626-0049) Irman, A., (0000-0003-0390-7671) Schramm, U., (0000-0002-8258-3881) Bussmann, M., (0000-0001-7990-9564) Pausch, R., (0000-0002-3844-3697) Debus, A., (0000-0001-8965-1149) Steiniger, K., (0000-0001-6994-2475) Garten, M., (0000-0003-1943-7141) Hübl, A., (0000-0003-1642-0459) Widera, R., (0000-0003-0340-9963) Kurz, T., Schöbel, S., (0000-0001-9129-4208) Couperus Cabadağ, J. P., Chang, Y.-Y., (0000-0001-9759-1166) Köhler, A., (0000-0003-4362-3438) Zarini, O., Heinemann, T., Gilljohann, M. F., Ding, H., Götzfried, J., Döpp, A., Kononenko, O., Raj, G., Martines De La Ossa, A., Assmann, R., Hidding, B., Karsch, S., Code, S., (0000-0002-4626-0049) Irman, A., (0000-0003-0390-7671) Schramm, U., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
The poster gives an overview of the LPWFA experimental setup and explains in detail the accompanying simulation campaign.
- Published
- 2019
44. Scalable particle-in-cell simulations on many-core hardware with the free and open source code PIConGPU
- Author
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(0000-0001-8965-1149) Steiniger, K., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-5845-000X) Cowan, T., (0000-0002-3844-3697) Debus, A., (0000-0001-6994-2475) Garten, M., Göthel, I., (0000-0003-1943-7141) Hübl, A., (0000-0002-9935-4428) Juckeland, G., Kelling, J., (0000-0003-4861-5584) Kluge, T., Koßagk, S., (0000-0002-6702-2015) Matthes, A., (0000-0001-7990-9564) Pausch, R., (0000-0003-0390-7671) Schramm, U., Starke, S., (0000-0003-1642-0459) Widera, R., Worpitz, B., (0000-0002-8258-3881) Bussmann, M., (0000-0001-8965-1149) Steiniger, K., (0000-0003-3396-6154) Bastrakov, S., (0000-0002-5845-000X) Cowan, T., (0000-0002-3844-3697) Debus, A., (0000-0001-6994-2475) Garten, M., Göthel, I., (0000-0003-1943-7141) Hübl, A., (0000-0002-9935-4428) Juckeland, G., Kelling, J., (0000-0003-4861-5584) Kluge, T., Koßagk, S., (0000-0002-6702-2015) Matthes, A., (0000-0001-7990-9564) Pausch, R., (0000-0003-0390-7671) Schramm, U., Starke, S., (0000-0003-1642-0459) Widera, R., Worpitz, B., and (0000-0002-8258-3881) Bussmann, M.
- Abstract
Exploring new regimes, optimizing experimental setups, or quantifying sensitivity of final beam parameters on experimental parameters, represent current challenges for simulations of laser plasma accelerators. Time-to-solution and scalability are key parameters for codes to minimize turnaround times in order to scan e.g. tens of parameters such as the laser leading edge, resolve solid density target physics and run full-scale start-to-end simulations. PIConGPU reaches unprecedented performance by accelerating 100% of its computations on many-core architectures and leveraging next-generation scalable I/O. High-resolution, full-geometry studies on top-ten listed supercomputers decisively enhance predictive capabilities. PIConGPU's design allows for utilizing various compute architectures, including modern X86 and ARM CPUs and GPUs with a single, adaptable code base. Users can now run PIConGPU on almost any machine, either by easy recompiling or using predefined Docker images, and everybody can download, use and contribute to the code without extensive knowledge in compute architectures. We highlight latest additions to PIConGPU such as scalable file I/O via a new openPMD-API including ADIOS2 support for on the fly loosely coupled data analysis, live visualization with particle and field rendering, non-standard Gaussian laser pulses via Laguerre modes, in-situ X-ray scattering image generation, and an pythonic simulation setup interface.
- Published
- 2019
45. cupla-docker
- Author
-
(0000-0002-8218-3116) Ehrig, S. and (0000-0002-8218-3116) Ehrig, S.
- Abstract
Dockerfiles which provide environments for building and running Cupla applications.
- Published
- 2019
46. Start-to-end simulations of L|PWFA hybrid accelerator experiments using PIConGPU
- Author
-
Pausch, R., Debus, A., Steiniger, K., Garten, M., Hübl, A., Widera, R., Kurz, T., Schöbel, S., Couperus Cabadağ, J. P., Chang, Y.-Y., Köhler, A., Zarini, O., Heinemann, T., Gilljohann, M. F., Ding, H., Götzfried, J., Döpp, A., Kononenko, O., Raj, G., Martines De La Ossa, A., Assmann, R., Hidding, B., Karsch, S., Code, S., Irman, A., Schramm, U., and Bussmann, M.
- Subjects
hybrid ,PIConGPU ,LPWFA ,alpaka ,ISAAC - Abstract
The poster gives an overview of the LPWFA experimental setup and explains in detail the accompanying simulation campaign.
- Published
- 2019
47. Alpakas und Lamas
- Author
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Klemm, Roland and Wehlitz, Romi
- Subjects
ddc:630 ,Sachsen, Nutztiere, Alpakazucht, Lamazucht ,Sachsen ,Nutztiere ,Nutztierhaltung ,Alpaka ,Alpakahaltung ,Alpakazucht ,Informationsmaterial - Abstract
Die Serie »Nutztiere in Sachsen« umfasste bisher neun Ausgaben: Milchrind, Fleischrind, Schaf, Ziege und Schwein; weiterhin Pferd, Legehenne, Mastgeflügel und Karpfen. Ergänzt wird die Serie um die Honigbiene sowie Lama und Alpaka. Die Faltblätter informieren in kompakter Form über Bedeutung und Bestände der Nutztiere in Sachsen und geben einen Überblick über Rassen, Zuchtziele, Leistungen sowie über Haltungsformen, Fütterung und Produktqualität. Sie richten sich in erster Linie an Personen, die ohne spezielle Vorkenntnisse an der Nutztierhaltung interessiert sind. Redaktionsschluss: 30.10.2019
- Published
- 2019
48. Zásady chovu lam v podmínkách České republiky
- Author
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Zemániková, Natálie
- Subjects
guanako ,vikuňa ,lama ,podmínky ,chov ,alpaka - Abstract
The content of my bachelor thesis is a summary of current information about the principles of llama breeding in the Czech Republic. It also deals with selected types of lam. Four species are mentioned, namely: llama llama, guanaco llama, lama vicuna and alpaca llama. Furthermore, there is some information about the history, present or domestication of lam, but most of the work is devoted to the requirements for their breeding, which is important before starting to breed thoroughly study to avoid some undesirable problems that might occur over time. An important chapter is mainly how to start a lamb breeding, then how their breeding environment, specifically enclosure or housing, should look like. Other important issues include skin care, hair or hooves, and the principles of overall cleaning and disinfection of the stable. Next, the Lam registration is mentioned. Finally, there are described animal products that can be obtained from llamas, the quality of milk and meat, and also statistics of llamas in the Czech Republic and abroad.
- Published
- 2019
49. Usporedba izolacijskih svojstava vune alpaka (Huacayo alpaca) i merino ovaca
- Author
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Anna Wyrostek, Maria Soroko, Kevin Howell, and Krzysztof Dudek
- Subjects
Materials science ,General Veterinary ,Thermal insulation ,business.industry ,Thermography ,Composite material ,business ,alpaka ,promjer vlakna ,dužina vlakna ,vuna ,ovca ,toplinska izolacija ,infracrvena termografija ,Alpacas ,fibre diameter ,fibre length ,fleece ,sheep ,thermal insulation ,infrared thermography - Abstract
The aim of the study was to evaluate and compare the fleece thermal insulation of Huacaya alpacas and Merino sheep. The study included 13 clinically healthy Huacaya alpacas and 14 Merino sheep. Fleece samples were taken from the trunk (lateral aspects) of each animal to measure coat fibre length and average fibre diameter. The insulating properties of each sample were determined using a calorimetric method. In addition, infrared thermographic images were taken of the trunk (lateral aspects) for both species in an indoor environment. Four regions of interest (ROIs) were determined from each thermographic image (corresponding to the coat sample sites) and the mean temperature within each ROI was calculated. Merino sheep had significantly (P, Cilj ovoga istraživanja jest procjena i usporedba vune alpaka (Huacayo alpaca) i merino ovaca kao toplinskog izolatora. Istraživanje je obuhvatilo 13 klinički zdravih alpaka i 14 merino ovaca. Uzorci vune uzeti su s lateralnog dijela trupa svake životinje kako bi se izmjerili dužina i promjer vlakana. Izolacijska svojstva svakoga uzorka određena su kalorimetrijskom metodom. Također su učinjene infracrvene termografske snimke lateralnog dijela trupa s kojega su uzeti uzorci u obje skupine u zatvorenom prostoru. Na svakoj su snimci određene četiri regije (na temelju mjesta uzorkovanja) te je izračunata prosječna temperatura. Vuna merino ovaca imala je znakovito duža i deblja vlakna od vune alpaka (P
- Published
- 2019
50. cupla-docker
- Author
-
Ehrig, S.
- Subjects
Docker ,Alpaka ,Cupla - Abstract
Dockerfiles which provide environments for building and running Cupla applications.
- Published
- 2019
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