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Content Provider | IEEE Xplore Digital Library |
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Author | Jun Lee Jungwon Kim Junghyun Kim Sangmin Seo Jaejin Lee |
Copyright Year | 2011 |
Abstract | Recently, Intel has introduced a research prototype many core processor called the Single-chip Cloud Computer (SCC). The SCC is an experimental processor created by Intel Labs. It contains 48 cores in a single chip and each core has its own L1 and L2 caches without any hardware support for cache coherence. It allows maximum 64GB size of external memory that can be accessed by all cores and each core dynamically maps the external memory into their own address space. In this paper, we introduce the design and implementation of an OpenCL framework (i.e., runtime and compiler) for such many core architectures with no hardware cache coherence. We have found that the OpenCL coherence and consistency model fits well with the SCC architecture. The OpenCL's weak memory consistency model requires relatively small amount of messages and coherence actions to guarantee coherence and consistency between the memory blocks in the SCC. The dynamic memory mapping mechanism enables our framework to preserve the semantics of the buffer object operations in OpenCL with a small overhead. We have implemented the proposed OpenCL runtime and compiler and evaluate their performance on the SCC with OpenCL applications. |
Starting Page | 56 |
Ending Page | 67 |
File Size | 400073 |
Page Count | 12 |
File Format | |
ISBN | 9781457717949 |
ISSN | 1089795X |
DOI | 10.1109/PACT.2011.12 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-10-10 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Kernel Runtime Coherence Indexes Arrays Copper Memory consistency Single-chip Cloud Computer OpenCL Compilers Cache coherence |
Content Type | Text |
Resource Type | Article |
Subject | Software Hardware and Architecture Theoretical Computer Science |
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