DEADLOCK AVOIDANCE BY MARKING CPU TRAFFIC AS SPECIAL

DEADLOCK AVOIDANCE BY MARKING CPU TRAFFIC AS SPECIAL

PROBLEM TO BE SOLVED: To provide a method and system for avoiding a deadlock by marking CPU traffic as special. SOLUTION: Deadlocks are avoided by marking read requests issued by a parallel processor to system memory as "special". Read completions associated with read requests marked as sp...

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Bibliographische Detailangaben
Hauptverfasser: MARCHAND PATRICK R, MA DENNIS K, GLASCO DAVID B, DUNCAN SAMUEL H, HUANG WEI-JE, KALAMBUR ATUL
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method and system for avoiding a deadlock by marking CPU traffic as special. SOLUTION: Deadlocks are avoided by marking read requests issued by a parallel processor to system memory as "special". Read completions associated with read requests marked as special are routed on a virtual channel 1 of the PCIe bus. Data returning on the virtual channel 1 cannot become stalled by write requests in a virtual channel 0, thus avoiding a potential deadlock. COPYRIGHT: (C)2010,JPO&INPIT