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Title: Reproducibility in a multiprocessor system

Patent ·
OSTI ID:1108971
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Fixing a problem is usually greatly aided if the problem is reproducible. To ensure reproducibility of a multiprocessor system, the following aspects are proposed; a deterministic system start state, a single system clock, phase alignment of clocks in the system, system-wide synchronization events, reproducible execution of system components, deterministic chip interfaces, zero-impact communication with the system, precise stop of the system and a scan of the system state.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
B554331
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Number(s):
8,595,554
Application Number:
12/774,475
OSTI ID:
1108971
Country of Publication:
United States
Language:
English

References (10)

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Blue Gene/L compute chip: Synthesis, timing, and physical design journal March 2005
Semiconductor integrated circuit device and method of design of semiconductor integrated circuit device patent November 2007
Automatic vernier synchronization of skewed data streams patent May 1991
Durable memory RS/6000 system design conference January 1994
Clock control circuit for test that facilitates an at speed structural test patent July 2007
Method and Infrastructure for Cycle-Reproducible Simulation on Large Scale Digital CIrcuits on a Coordinated Set of Field-Programmable Gate Arrays (FPGAs) patent-application May 2012

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97 MATHEMATICS AND COMPUTING