User Guide

  • 2020
  • 06/18/2020
  • Public Content
Contents

reduce-lock-overhead

Examine specified annotated sites for opportunities to reduce lock overhead in a Suitability report.

Syntax

--reduce-lock-overhead
=
<string>
Arguments
<string>
is a comma-separated list of annotated sites (no spaces).
Default
No default argument
Actions Modified
report
=suitability
Usage
Lock overhead is the time spent creating, destroying, acquiring, and releasing locks (as opposed to lock contention, which is the time spent waiting for a lock held by another task). Think of lock overhead as the cost of lock operations, assuming the lock is always available.
Usage of this option simulates parallel execution with the assumption that lock overhead is zero for a specified site.
Generate a Suitability report. Examine the annotated sites
myAnnotatedSiteJ
and
myAnnotatedSiteX
for opportunities to reduce lock overhead. Write the report to
stdout.
$ advixe-cl --report=suitability --project-dir=./advi --reduce-lock-overhead=myAnnotatedSiteJ,myAnnotatedSiteX

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804