NDLI: Twin peaks: a software platform for heterogeneous computing on general-purpose and graphics processors

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Twin peaks: a software platform for heterogeneous computing on general-purpose and graphics processors

Content Provider	ACM Digital Library
Author	Gaster, Benedict R. Houston, Michael Zheng, Bixia Morichetti, Laurent Sander, Ben Gummaraju, Jayanth
Abstract	Modern processors are evolving into hybrid, heterogeneous processors with both CPU and GPU cores used for general purpose computation. Several languages such as Brook, CUDA, and more recently OpenCL are being developed to fully harness the potential of these processors. These languages typically involve the control code running on the CPU and the performance-critical, data-parallel kernel code running on the GPUs. In this paper, we present Twin Peaks, a software platform for heterogeneous computing that executes code originally targeted for GPUs efficiently on CPUs as well. This permits a more balanced execution between the CPU and GPU, and enables portability of code between these architectures and to CPU-only environments. We propose several techniques in the runtime system to efficiently utilize the caches and functional units present in CPUs. Using OpenCL as a canonical language for heterogeneous computing, and running several experiments on real hardware, we show that our techniques enable GPGPU-style code to execute efficiently on multicore CPUs with minimal runtime overhead. These results also show that for maximum performance, it is beneficial for applications to utilize both CPUs and GPUs as accelerator targets.
Starting Page	205
Ending Page	216
Page Count	12
File Format	PDF
ISBN	9781450301787
DOI	10.1145/1854273.1854302
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-09-11
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Multicore Runtime Opencl Gpgpu Programmability
Content Type	Text
Resource Type	Article

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