cachesim-mode
cachesim-mode
Set the focus for modeling CPU cache
behavior during Memory Access Patterns analysis.
GUI Equivalent
Syntax
--cachesim-mode
=
<string>
Arguments
<string>
is one of the
following:
Argument
| Description
|
|---|---|
cache-misses
| Model cache misses only.
|
footprint
| Model cache misses and memory footprint of a loop. Calculation:
Cache line size x Number of unique cache lines accessed during simulation.
|
utilization
| Model cache misses and cache lines utilization.
|
Default
utilization
Actions Modified
collect
=map
--enable cache-simulation
Usage
For memory footprint simulation, the
Intel Advisor
tracks only a subset of accesses and cache lines, and scales it up to the total
size of cache to calculate the final footprint value.
Cache simulation modeling applies to the following:
- 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.
- CPU / Memory Roofline Insightsperspective - 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 Memory Access
Patterns analysis.
Usage can increase analysis overhead.
Example
Run a Memory Access Patterns analysis. Model cache
misses for a default cache configuration.
$ advisor collect=map --enable-cache-simulation --cachesim-mode=cache-misses --project-dir=./advi_results -- ./myApplicationRun a Memory Access Patterns analysis. Model cache miss
and memory footprint data for 1024-byte cache set size, default cache
associativity and cache line size.
$ advisor collect=map --enable-cache-simulation --cachesim-sets=1024 --cachesim-mode=footprint --project-dir=./advi_results -- ./myApplication