Intel® Advisor User Guide

User Guide

  • 2021.2
  • 05/21/2021
  • Public Content
  • Download as PDF
Contents

search-n-dim

Enable searching for an optimal N-dimensional offload.

Syntax

--search-n-dim
--no-search-n-dim
Default
On (search-n-dim)
Actions Modified
collect
=projection
Usage
search-n-dim
 enables combining up to three nested
parallel
 loops into an N-dimensional offload. This can reduce estimated execution time on GPU and Time by Compute. Use
no-search-n-dim
 to estimate offloading for each loop separately.
Only loops with no dependencies can be combined into an N-dimensional offload.
Do
not
 use this option with
--threads
 or
--enable-batching
.
Example
  1. Run Survey Analysis.
  2. Run Trip Counts and FLOP analyses of the Characterization stage.
  3. Do not search for an optimal N-dimensional offload when modeling your application performance on a target device. 
$ advisor --collect=survey -stackwalk-mode=online --static-instruction-mix --project-dir=./advi -- myApplication

$ advisor --collect=tripcounts --flop --enable-data-transfer-analysis --project-dir=./advi -- myApplication
$ advisor --collect=projection --no-search-n-dim --project-dir=./advi

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.