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IBM z14: Processor Characterization and Power Management for High-Reliability Mainframe Systems
- Source :
- IEEE Journal of Solid-State Circuits. 54:121-132
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- The IBM z14 is the latest update in the storied history of IBM mainframes. Reliability, availability, security, and scalability are the foundation of the IBM mainframe line. System reliability and availability targets are in excess of 10 years, requiring rigorous chip characterization processes. In this paper, we discuss some of the many processes used to ensure that lifetime. An additional part of this reliability is power management (PM). The 5.2-GHz high-power design of the central processor chip requires advanced on-die PM capabilities to adapt to power intensive instruction streams. We also discuss a number of improvements to the critical path monitoring design used to manage power supply voltage droops, reducing response time and the impact on system performance. Finally, we compare a set of simulations and hardware results to validate our power fluctuation models.
- Subjects :
- Power management
Reliability (semiconductor)
Built-in self-test
Computer science
020208 electrical & electronic engineering
Scalability
0202 electrical engineering, electronic engineering, information engineering
02 engineering and technology
Electrical and Electronic Engineering
IBM
Critical path method
Reliability engineering
Subjects
Details
- ISSN :
- 1558173X and 00189200
- Volume :
- 54
- Database :
- OpenAIRE
- Journal :
- IEEE Journal of Solid-State Circuits
- Accession number :
- edsair.doi...........a7d77c01b32959ce9e487e72465feba8