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US 8,151,095 B1Granted
System and method for context migration across CPU threads
AssigneeNVIDIA Corporation
InventorNicholas Patrick Wilt
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AssigneeNVIDIA Corporation
InventorNicholas Patrick Wilt
Estimating the term…
One embodiment of the present invention sets forth a technique for associating arbitrary parallel processing unit (PPU) contexts with a given central processing unit (CPU) thread. The technique introduces two operators used to manage the PPU contexts. The first operator is a PPU context push, which causes a PPU driver to store the current PPU context of a calling thread on a PPU context stack and to associate a named PPU context with the calling thread. The second operator is a PPU context pop, which causes the PPU driver to restore the PPU context of a calling function to the PPU context at the top of the PPU context stack. By performing a PPU context push at the beginning of a function and a PPU context pop prior to returning from the function, the function may execute within a single CPU thread, but operate on a two distinct PPU contexts.
A method for preserving a processing unit context associated with a processing unit thread, the method comprising:
A non-transitory computer-readable medium including instructions that, when executed by a processing unit, cause the processing unit to preserve a processing unit context associated with a processing unit thread, by performing the steps of:
Dependencies are inferred from the claim text.