Grouping processors and assigning shared memory space to a group in a heterogeneous computer environment
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United States of America Patent
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Jan 26, 2010
Grant Date -
Jun 26, 2008
app pub date -
Mar 4, 2008
filing date -
Sep 25, 2003
priority date (Note) -
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Abstract
Grouping processors is presented. A processing unit (PU) initiates an application and identifies the application's requirements. The PU assigns one or more synergistic processing units (SPUs) and a memory space to the application in the form of a group. The application specifies whether the task requires shared memory or private memory. Shared memory is a memory space that is accessible by the SPUs and the PU. Private memory, however, is a memory space that is only accessible by the SPUs that are included in the group. When the application executes, the resources within the group are allocated to the application's execution thread. Each group has its own group properties, such as address space, policies (i.e. real-time, FIFO, run-to-completion, etc.) and priority (i.e. low or high). These group properties are used during thread execution to determine which groups take precedence over other tasks.
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