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Title: Hardware accuracy counters for application precision and quality feedback

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.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1455226
Assignee:
Advanced Micro Devices, Inc. (Sunnyvale, CA) LLNL
Patent Number(s):
9,990,203
Application Number:
14/981,310
Contract Number:
AC52-07NA27344; B609201
Resource Relation:
Patent File Date: 2015 Dec 28
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

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