SemCache: Semantics-Aware Caching for Efficient GPU Offloading - Nabeel Al-Saber
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In this book, we introduce SemCache, a semantics-aware GPU cache that automatically manages CPU-GPU communication in addition to optimizing communication by eliminating redundant transfers using caching. It uses library semantics to determine the appropriate caching granularity for a given offloaded library. Our caching technique is efficient; it only tracks matrices instead of tracking every memory access ... Full description
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Description
In this book, we introduce SemCache, a semantics-aware GPU cache that automatically manages CPU-GPU communication in addition to optimizing communication by eliminating redundant transfers using caching. It uses library semantics to determine the appropriate caching granularity for a given offloaded library. Our caching technique is efficient; it only tracks matrices instead of tracking every memory access at fine granularity. We applied SemCache to Basic Linear Algebra Subprograms (BLAS) library to provide a GPU drop-in replacement library. SemCache++ extends SemCache to support offloading to multiple GPUs. SemCache++ is used to build the first multi-GPU drop-in replacement library that (a) uses the virtual memory to automatically manage and optimize multi-GPU communication and (b) requires no program rewriting or annotations. SemCache++ also enables new features like asynchronous transfers, parallel execution and overlapping communication with computation. Experimental results show that our system can dramatically reduce redundant communication for real-world computational science application and deliver significant improvements, beating exciting GPU-based implementations.
More Information
| Author | Nabeel Al-Saber |
|---|---|
| Publisher | LAP LAMBERT Academic Publishing |
| Release year | 2016 |
| Cover type | Softcover |
| EAN | 9783659878145 |