Synopsis
Unlock the secrets of building and running massively parallel computers.
This concise guide surveys how operating systems must support both highly parallel application programs and the hardware that powers ultrafast, many-processor systems. It centers on the Ultracomputer architecture and its innovative software design, showing how to achieve bottleneck-free coordination, scalable scheduling, and parallel memory management.
The book explains key ideas in accessible terms, from the role of fetch-and-add synchronization to the challenges of managing thousands of processors. It discusses practical techniques for memory allocation, task spawning, and barrier synchronization, all aimed at keeping software flexible, scalable, and robust in a highly concurrent environment.What you’ll experience
- An overview of the architectural model that enables many processors to share memory and work in parallel
- Clear explanations of powerful synchronization primitives and how they support parallel OS services
- Insights into memory management strategies, including stack handling for parallel tasks
- Practical approaches to process scheduling that avoid serial bottlenecks and improve throughput
- A look at how real-world prototypes implement these concepts on eight-processor systems and how they influence future designs
- Discussion of how both hardware and software decisions affect performance, flexibility, and programmability
- Examples of how decentralized scheduling and fetch-and-add based queues enable scalable, parallel execution
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