Cooperative workgroup scheduling and context prefetching based on predicted modification of signal values

Patent · Tue Oct 25 00:00:00 EDT 2022

OSTI ID:1986741

Dutu, Alexandru; Sinclair, Matthew David; Beckmann, Bradford; Wood, David A.

A first workgroup is preempted in response to threads in the first workgroup executing a first wait instruction including a first value of a signal and a first hint indicating a type of modification for the signal. The first workgroup is scheduled for execution on a processor core based on a first context after preemption in response to the signal having the first value. A second workgroup is scheduled for execution on the processor core based on a second context in response to preempting the first workgroup and in response to the signal having a second value. A third context it is prefetched into registers of the processor core based on the first hint and the second value. The first context is stored in a first portion of the registers and the second context is prefetched into a second portion of the registers prior to preempting the first workgroup.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Advanced Micro Devices, Inc., Santa Clara, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344; B620717
• Assignee: Advanced Micro Devices, Inc. (Santa Clara, CA)
• Patent Number(s): 11,481,250
• Application Number: 16/024,244
• OSTI ID: 1986741
• Resource Relation: Patent File Date: 06/29/2018
• Country of Publication: United States
• Language: English