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doku:perf-report

VSC-3: Performance Reports (Allinea)

Synopsis:

perf-report is a lightweight profiling tool that provides basic information about where the computing time is actually spent in a given application. It is developed by Allinea http://www.allinea.com/products/allinea-performance-reports and very easy to use, i.e. by simply inserting the call to perf-report prior to the usual execution of the program.

Usage:

For example, analyzing a simple MPI job could be done with the help of the following submit script to SLURM

 #!/bin/bash
 #
 #SBATCH -J prflng        
 #SBATCH -N 2 
 #SBATCH -L allinea@vsc
 #SBATCH --ntasks-per-node=16
 #SBATCH --ntasks-per-core=1
 #SBATCH --time=00:10:00

 module purge
 module load intel-mpi/5
 module load allinea/6.0.6_PR
  
 perf-report mpirun -np 32 a.out
 

This will result in the creation of two summary files in *.txt and *.html format providing an overview of the relative time spent in MPI, I/O, OpenMP etc.

Further Reading:

Explanations, examples, typical cases at http://content.allinea.com/downloads/getting-started.pdf

doku/perf-report.txt · Last modified: 2017/04/26 15:30 by dieter