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SUMMARY:Huawei: Pangloss+: a novel Markov chain adaptive prefetcher - Phil
 ippos Papaphilippou\, Senior CPU Architect at Huawei UK R&amp\;D
DTSTART:20230131T130500Z
DTEND:20230131T135500Z
UID:TALK194110@talks.cam.ac.uk
CONTACT:Ben Karniely
DESCRIPTION:Philippos Papaphilippou received his PhD from Imperial College
  London in 2021 and an MPhil in 2017 from the Computer Lab. His PhD was fu
 nded by dunnhumby (Tesco) for researching novel accelerators to improve th
 e performance of big data analytics. He is now a senior CPU architect at H
 uawei Technologies R&D (UK) Limited\, researching multi-cores and novel co
 mputer architectures. His research topics also include FPGAs\, sorting alg
 orithms\, network switches and data science.\n\nTalk abstract:\nData prefe
 tching is a mechanism that can significantly improve  processor performanc
 e by predicting the next memory accesses and timely fetching the appropria
 te data inside the data caches. Pangloss is an efficient high-performance 
 data prefetcher that approximates Markov chains on address delta transitio
 ns. The main idea is "delta cache"\, a novel hardware structure that predi
 cts future memory/cache accesses with high accuracy. A helper structure ca
 lled page cache is also added for helping reconstruct delta transitions or
 iginally obfuscated by out-of-order execution etc.\n\nAfter its first intr
 oduction in the 3rd Data Prefetching Championship   workshop at ISCA'19\, 
 it is now extended inside Huawei R&D UK with an adaptive mechanism to adju
 st the prefetching degree according to the results of a periodic training 
 phase. With a relatively limited information scope and space/logic complex
 ity\, it is able to reconstruct a variety of simple and complex access pat
 terns.\n\nPlease sign-up at the following link to attend: https://www.smar
 tsurvey.co.uk/s/QK7MSU/\n\nSome catering will be provided before the talk 
 at 12.45pm.\n
LOCATION:FW11\, William Gates Building
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