User Guide

Contents

cache-config

Set the cache hierarchy to collect modeling data for CPU cache behavior during Trip Counts & FLOP analysis.

Syntax

--cache-config
=
<string>
Arguments
<string>
follows this template:
[num_of_level1_caches]:[num_of_ways_level1_connected]:[level1_cache_size]:[level1_cacheline_size]/
[num_of_level2_caches]:[num_of_ways_level2_connected]:[level2_cache_size]:[level2_cacheline_size]/
[num_of_level3_caches]:[num_of_ways_level3_connected]:[level3_cache_size]:[level3_cacheline_size]
For example: 4:8w:32k:64l/4:4w:256k:64l/1:16w:6m:64l
Actions Modified
collect
=tripcounts --enable-cache-simulation
collect
=roofline --enable-cache-simulation
Usage
When no specific configuration is set, the
Intel Advisor
uses system cache hierarchy for modeling.
Cache simulation modeling applies to the following
analyses
:
  • Memory Access Patterns
    analysis
    - This basic simulation functionality models accurate memory footprints, miss information, and cache line utilization for a downstream Memory Access Patterns report.
  • Trip Counts and FLOP / Roofline - This enhanced simulation functionality models multiple levels of cache for a downstream Memory-Level Roofline chart or Roofline interactive HTML report.
This option is applicable only to Trip Counts and FLOP and Roofline analyses.
  1. Run a Survey analysis.
  2. Run a Trip Counts & FLOP analysis. Model cache behavior for the specified configuration.
$ advixe-cl –-collect=survey –-project-dir=./advi -- myApplication
$ advixe-cl --collect=tripcounts --flop –-enable-cache-simulation --cache-config=4:8w:32k:64l/4:4w:256k:64l/1:16w:6m:64l –-project-dir=./advi -- myApplication
Run Roofline analysis for all memory levels (Memory-Level Roofline) for the specified cache configuration.
$ advixe-cl –-collect=roofline --enable-cache-simulation --cache-config=4:8w:32k:64l/4:4w:256k:64l/1:16w:6m:64l –-project-dir=./advi -- myApplication

Product and Performance Information

1

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