Ishita Chaturvedi will present her General Exam "GPU Out-Of-Order Processing" on Wednesday, April 20, 2022 at 1:00 PM in Friend 202 and via zoom. Zoom link: [ https://princeton.zoom.us/my/ishita.c | https://princeton.zoom.us/my/ishita.c ] Committee Members: David August (advisor), David Wentzlaff, Tyler Sorensen Abstract: GPUs have become ubiquitous today for high-performance computing. While GPUs leverage massive multithreaded parallelism to obtain speedup, they still suffer from having multiple stall cycles. While some stall reasons can be fixed others must be tolerated. We introduce the Def-Ex GPU infrastructure which improves GPU performance using Out-of-Order instruction execution. We focus on the Deferred Execution Buffer which defers the execution of stalling instructions to issue them later. This gives an opportunity for the next instructions in the pipeline to execute, thus reducing the stall cycles. We see a maximum speedup of 26% and a geomean speedup of 14% on the Rodinia benchmark suite with the Deferred Execution Buffer. Reading List: [ https://docs.google.com/document/d/1LxXAI99yrbRsGa6kc56JCsnmBwQ8nzs3B2E9pTFQ... | https://docs.google.com/document/d/1LxXAI99yrbRsGa6kc56JCsnmBwQ8nzs3B2E9pTFQ... ] Everyone is invited to attend the talk, and those faculty wishing to remain for the oral exam following are welcome to do so. Louis Riehl Graduate Administrator Computer Science Department, CS213 Princeton University (609) 258-8014