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Title: Method and apparatus for single-stepping coherence events in a multiprocessor system under software control

Abstract

An apparatus and method are disclosed for single-stepping coherence events in a multiprocessor system under software control in order to monitor the behavior of a memory coherence mechanism. Single-stepping coherence events in a multiprocessor system is made possible by adding one or more step registers. By accessing these step registers, one or more coherence requests are processed by the multiprocessor system. The step registers determine if the snoop unit will operate by proceeding in a normal execution mode, or operate in a single-step mode.

Inventors:
 [1];  [2]
  1. Ridgefield, CT
  2. Chappaqua, NY
Issue Date:
Research Org.:
International Business Machines Corporation (Armonk, NY)
Sponsoring Org.:
USDOE
OSTI Identifier:
1017452
Patent Number(s):
7,827,391
Application Number:
11/768,857
Assignee:
International Business Machines Corporation (Armonk, NY)
DOE Contract Number:  
B554331
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Blumrich, Matthias A, and Salapura, Valentina. Method and apparatus for single-stepping coherence events in a multiprocessor system under software control. United States: N. p., 2010. Web.
Blumrich, Matthias A, & Salapura, Valentina. Method and apparatus for single-stepping coherence events in a multiprocessor system under software control. United States.
Blumrich, Matthias A, and Salapura, Valentina. Tue . "Method and apparatus for single-stepping coherence events in a multiprocessor system under software control". United States. https://www.osti.gov/servlets/purl/1017452.
@article{osti_1017452,
title = {Method and apparatus for single-stepping coherence events in a multiprocessor system under software control},
author = {Blumrich, Matthias A and Salapura, Valentina},
abstractNote = {An apparatus and method are disclosed for single-stepping coherence events in a multiprocessor system under software control in order to monitor the behavior of a memory coherence mechanism. Single-stepping coherence events in a multiprocessor system is made possible by adding one or more step registers. By accessing these step registers, one or more coherence requests are processed by the multiprocessor system. The step registers determine if the snoop unit will operate by proceeding in a normal execution mode, or operate in a single-step mode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}

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