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2016 International Conference on Parallel Architecture and Compilation Techniques (PACT) (2016)
Haifa, Israel
Sept. 11, 2016 to Sept. 15, 2016
ISBN: 978-1-5090-5308-7
pp: 435-437
Jee Ho Ryoo , Department of Electrical and Computer Engineering, The University of Texas at Austin, United States of America
Mitesh R. Meswani , AMD Research, Austin, TX, United States of America
Reena Panda , Department of Electrical and Computer Engineering, The University of Texas at Austin, United States of America
Lizy K. John , Department of Electrical and Computer Engineering, The University of Texas at Austin, United States of America
ABSTRACT
In this paper, we present a flat address space organization called SILC-FM that allows subblocks from two pages to coexist in an interleaved fashion in die-stacked DRAM. Data movement at subblocked granularity consumes less bandwidth compared to migrating the entire large block and prevents fetching useless subblocks that may never get accessed. SILC-FM can get more spatial locality hits than CAMEO and PoM due to page-level operation and inter-leaving blocks respectively. The interleaved subblock placement improves performance by 55% on average over a static placement scheme without data migration. We also selectively lock hot blocks to prevent them from being involved in the hardware swapping operations. Additional features such as locking, associativity and bandwidth balancing improve performance by 11%, 8%, and 8% respectively, resulting in a total of 82% performance improvement over no migration static placement scheme. Compared to the best state-of-the-art scheme, SILC-FM gets performance improvement of 36%.
INDEX TERMS
Random access memory, Bandwidth, Frequency modulation, Microarchitecture, Hardware, Memory architecture
CITATION
Jee Ho Ryoo, Mitesh R. Meswani, Reena Panda, Lizy K. John, "POSTER: SILC-FM: Subblocked interleaved Cache-Like Flat Memory Organization", 2016 International Conference on Parallel Architecture and Compilation Techniques (PACT), vol. 00, no. , pp. 435-437, 2016, doi:10.1145/2967938.2974060
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