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Title: Multiprocessor system with multiple concurrent modes of execution

A multiprocessor system supports multiple concurrent modes of speculative execution. Speculation identification numbers (IDs) are allocated to speculative threads from a pool of available numbers. The pool is divided into domains, with each domain being assigned to a mode of speculation. Modes of speculation include TM, TLS, and rollback. Allocation of the IDs is carried out with respect to a central state table and using hardware pointers. The IDs are used for writing different versions of speculative results in different ways of a set in a cache memory.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1333218
Assignee:
International Business Machines Corporation (Armonk, NY) OSTI
Patent Number(s):
9,501,333
Application Number:
14/143,783
Contract Number:
B554331
Resource Relation:
Patent File Date: 2013 Dec 30
Research Org:
International Business Machines Corporation, Armonk, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Other works cited in this record:

Fast synchronization on shared-memory multiprocessors: An architectural approach
journal, October 2005
  • Fang, Zhen; Zhang, Lixin; Carter, John B.
  • Journal of Parallel and Distributed Computing, Vol. 65, Issue 10, p. 1158-1170
  • DOI: 10.1016/j.jpdc.2005.04.013

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