Deferred task swapping in a multithreaded environment
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United States of America Patent
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May 19, 2009
Grant Date -
Apr 1, 2004
app pub date -
Sep 16, 2003
filing date -
Nov 13, 1998
priority date (Note) -
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Abstract
A method and system that prepares a task for being swapped out from processor utilization that is executing on a computer with multiple processors that each support multiple streams. The task has one or more teams of threads, where each team represents threads executing on a single processor. The task designates, for each stream that is executing a thread, one stream as a team master stream and one stream as a task master stream. For each team master stream, the task notifies the operating system that the team is ready to be swapped out when each other thread of the team has saved its state and has quit its stream. Finally, for the task master stream, the task notifies the operating system that the task is ready to be swapped when it has saved its state and each other team has notified that it is ready to be swapped out.
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