TECHNIQUE FOR SAVING AND RESTORING THREAD GROUP OPERATING STATE

摘要

A streaming multiprocessor (SM) included within a parallel processing unit (PPU) is configured to suspend a thread group executing on the SM and to save the operating state of the suspended thread group. A load-store unit (LSU) within the SM re-maps local memory associated with the thread group to a location in global memory. Subsequently, the SM may re-launch the suspended thread group. The LSU may then perform local memory access operations on behalf of the re-launched thread group with the re-mapped local memory that resides in global memory.

主权项

1. A computer-implemented method for saving an operating state associated with a group of threads executing on a processor, the method comprising:
determining that a first portion of memory allocated to a first group of threads resides within a first memory region; allocating a second portion of memory within a second memory region; copying the first portion of memory to the second portion of memory; and recording a pointer to the second portion of memory, wherein the processing engine is configured to perform memory access operations associated with the first group of threads based on the pointer to the second portion of memory.