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2. Deserv:Decentralized Serverless Computing

Author

Christie V, Samuel H., Chopra, Amit K., Singh, Munindar P., Christie V, Samuel H., Chopra, Amit K., and Singh, Munindar P.

Abstract

A decentralized application involves multiple autonomous principals, e.g., humans and organizations. Autonomy motivates (i) specifying a decentralized application via a protocol that captures the interactions between the principals, and (ii) a programming model that enables each principal to independently (from other principals) construct its own protocol-compliant agent. An agent encodes its principal's decision making and represents it in the application. We contribute Deserv, the first protocol-based programming model for decentralized applications that is suited to the cloud. Specifically, Deserv demonstrates how to leverage function-as-a-service (FaaS), a popular serverless programming model, to implement agents. A notable feature of Deserv is the use declarative protocols to specify interactions. Declarative protocols support implementing stateful agents in a manner that naturally exploits the concurrency and autoscaling benefits offered by serverless computing.

Published
2021

3. Deserv : Decentralized Serverless Computing

Author

Christie V, Samuel H., Chopra, Amit K., Singh, Munindar P., Christie V, Samuel H., Chopra, Amit K., and Singh, Munindar P.

Abstract

A decentralized application involves multiple autonomous principals, e.g., humans and organizations. Autonomy motivates (i) specifying a decentralized application via a protocol that captures the interactions between the principals, and (ii) a programming model that enables each principal to independently (from other principals) construct its own protocol-compliant agent. An agent encodes its principal's decision making and represents it in the application. We contribute Deserv, the first protocol-based programming model for decentralized applications that is suited to the cloud. Specifically, Deserv demonstrates how to leverage function-as-a-service (FaaS), a popular serverless programming model, to implement agents. A notable feature of Deserv is the use declarative protocols to specify interactions. Declarative protocols support implementing stateful agents in a manner that naturally exploits the concurrency and autoscaling benefits offered by serverless computing.

Published
2021

4. Bungie: Improving Fault Tolerance via Extensible Application-Level Protocols.

Author

Christie V, Samuel H, Chopra, Amit Khushwant, and Singh, Munindar P.

Subjects
*FAULT-tolerant computing
Abstract

We present Bungie, an approach based on applicationlevel protocols that precisely capture the causality inherent to the interactions among agents. We show through patterns and examples how Bungie provides abstractions for achieving fault tolerance. [ABSTRACT FROM AUTHOR]

Published
2021
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5. Protocols Over Things: A Decentralized Programming Model for the Internet of Things.

Author

Christie V, Samuel H., Smirnova, Daria, Chopra, Amit K., and Singh, Munindar P.

Subjects
*INTERNET of things, *INTERNET programming
Abstract

Current programming models for developing Internet of Things (IoT) applications are logically centralized and ill-suited for most IoT applications. We contribute Protocols over Things, a decentralized programming model that represents an IoT application via a protocol between the parties involved and provides improved performance over network-level delivery guarantees. [ABSTRACT FROM AUTHOR]

Published
2020
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10. Inverted Slot-Mode Slow-Wave Structures for Traveling-Wave Tubes.

Author

Christie, V. Latha, Kumar, Lalit, and Balakrishnan, N.

Subjects
*DISPERSION relations, *ELECTRONIC circuit design, *ELECTRIC impedance, *ELECTROMAGNETIC devices, *ELECTRIC resistance
Abstract

The dispersion and impedance characteristics of an inverted slot-mode (ISM) slow-wave structure .computed by three different techniques, i.e., an analytical model based on a periodic quasi-TEM approach, an equivalent-circuit model, and 3-D electromagnetic simulation are obtained and compared. The comparison was carried out for three different slot:mode structures at S-, C-, and X-bands. The approach was also validated with experimental measurements on a practical X-band ISM traveling-wave tube. The design of ferruleless ISM slow-wave structures, both in circular and rectangular formats, has also been proposed and the predicted dispersion characteristics for these two geometries are compared with 3-D simulation and cold-test measurements. The impedance characteristics for all three designs are also compared. [ABSTRACT FROM AUTHOR]

Published
2007
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