Coprocessor context priority

A method comprising:

• programming an initial plurality of context priorities in a table, wherein the initial plurality of context priorities correspond to a plurality of threads that include coprocessor instructions, wherein the coprocessor instructions are executed by a coprocessor coupled to a plurality of processors, wherein the coprocessor includes a plurality of contexts that correspond to a plurality of coprocessor context priority registers, and wherein a context priority programmed into a given coprocessor context priority register specifies a priority for execution bandwidth on the coprocessor, the priority corresponding to a thread executing in a respective context of the plurality of contexts;
• programming a particular coprocessor context priority register of the plurality of coprocessor context priority registers based on a given thread of the plurality of threads executing on the plurality of processors, wherein programming the particular coprocessor context priority register comprises reading a corresponding priority from the table for the given thread and writing the corresponding priority to the particular coprocessor context priority register;
• arbitrating between coprocessor instructions from the plurality of processors to select coprocessor instructions to be transmitted to the coprocessor for execution based on the context priorities programmed into the plurality of coprocessor context priority registers;
• monitoring operation of the plurality of threads;
• and
• based on the operation of the plurality of threads, dynamically modifying one or more of the initial plurality of context priorities in the table.

A system comprising:

• a plurality of processors;
• a coprocessor coupled to the plurality of processors and configured to execute coprocessor instructions transmitted by the plurality of processors, wherein the coprocessor instructions are included in threads with processor instructions to be executed by the plurality of processors, and wherein the coprocessor includes a plurality of contexts, and wherein a respective context of the plurality of contexts corresponds to a respective processor of a plurality of processors, and wherein the coprocessor comprises separate state for the respective contexts to ensure independent, concurrent execution of coprocessor instructions from different threads;
• a plurality of coprocessor context priority registers, wherein a given coprocessor context priority register of the plurality of coprocessor context priority registers corresponds to the respective context of the plurality of contexts, and wherein a context priority programmed into the given coprocessor context priority register specifies a priority of a thread executing in the respective context for execution bandwidth on the coprocessor;
• and
• an arbiter coupled to the plurality of processors and the coprocessor and configured to arbitrate between coprocessor instructions from the plurality of processors to select coprocessor instructions to be transmitted to the coprocessor for execution based on the context priorities programmed into the plurality of coprocessor context priority registers.