SPECTRE: Speculation to hide communication latency

Content Provider	Microsoft Research
Author	Martin, Jean-Philippe Rossbach, Christopher J. Isard, Michael
Copyright Year	2011
Abstract	We describe work in progress on the Spectre system which aims to provide high performance computing over distributed shared memory, targeting workloads such as graph algorithms for which functional or dataow decompositions are inecient. We exploit aggressive speculation to hide the latency of remote memory accesses and synchronization, and execute all code transactionally so that mis-speculations can be discovered and reverted.Unlike previous speculative transactional systems, Spectre makes side eects visible beyond transaction boundaries before the transactions have committed, tracking dependencies to ensure correctness on abort: we call this property transgression. We outline the Spectre design and provide preliminary results from a microbenchmark to motivate the approach.
Language	English
Publisher	ACM Permission to make digital or hard copies of all or part of this work forpersonal or classroom use is granted without fee provided that copies arenot made or distributed for prot or commercial advantage and that copiesbear this notice and the full citation on the rst page
Publisher Date	2011-07-12
Access Restriction	Open
Rights Holder	Microsoft Corporation
Subject Keyword	Computer vision
Content Type	Text
Resource Type	Proceeding