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Exploring the Laten...
Exploring the Latency Sensitivity of Cache Replacement Policies
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- Nematallah, Ahmed, 1995- (författare)
- Uppsala universitet,Avdelningen för datorteknik,Datorarkitektur och datorkommunikation
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- Park, Chang Hyun, Assistant Professor, 1989- (författare)
- Uppsala universitet,Avdelningen för datorteknik,Datorarkitektur och datorkommunikation
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- Black-Schaffer, David, Professor (författare)
- Uppsala universitet,Avdelningen för datorteknik,Datorarkitektur och datorkommunikation
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2023
- 2023
- Engelska.
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Ingår i: IEEE Computer Architecture Letters. - : Institute of Electrical and Electronics Engineers (IEEE). - 1556-6056 .- 1556-6064. ; 22:2, s. 93-96
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Abstract
Ämnesord
Stäng
- With DRAM latencies increasing relative to CPU speeds, the performance of caches has become more important. This has led to increasingly sophisticated replacement policies that require complex calculations to update their replacement metadata, which often require multiple cycles. To minimize the negative impact of these metadata updates, architects have focused on policies that incur as little update latency as possible through a combination of reducing the policies’ precision and using parallel hardware. In this work we investigate whether these tradeoffs to reduce cache metadata update latency are needed. Specifically, we look at the performance and energy impact of increasing the latency of cache replacement policy updates. We find that even dramatic increases in replacement policy update latency have very limited effect. This indicates that designers have far more freedom to increase policy complexity and latency than previously assumed.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Nyckelord
- Cache Replacement Policies
- Computer Architecture
- High-Performance Computing
- Computer Science
- Datavetenskap
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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