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HARDWARE ACCURACY COUNTERS FOR APPLICATION PRECISION AND QUALITY FEEDBACK

United States Patent Application

20170185409
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Methods, devices, and systems for capturing an accuracy of an instruction executing on a processor. An instruction may be executed on the processor, and the accuracy of the instruction may be captured using a hardware counter circuit. The accuracy of the instruction may be captured by analyzing bits of at least one value of the instruction to determine a minimum or maximum precision datatype for representing the field, and determining whether to adjust a value of the hardware counter circuit accordingly. The representation may be output to a debugger or logfile for use by a developer, or may be output to a runtime or virtual machine to automatically adjust instruction precision or gating of portions of the processor datapath.
de Paula Rosa Piga, Leonardo (Austin, TX), Majumdar, Abhinandan (Ithaca, NY), Paul, Indrani (Austin, TX), Huang, Wei (Austin, TX), Arora, Manish (Sunnyvale, CA), Greathouse, Joseph L. (Austin, TX)
Advanced Micro Devices, Inc. (Sunnyvale CA)
14/ 981,310
December 28, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] This invention was made with Government support under Prime Contract Number DE-AC52-07NA27344, Subcontract No. B609201 awarded by the United States Department of Energy. The Government has certain rights in this invention.