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MpiP: Difference between revisions
(Initial page describing basics of using the mpiP profiling tool on HLRS systems) |
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which will set the '$MPIP_HOME' variable to the latest mpiP installation path. | which will set the '$MPIP_HOME' variable to the latest mpiP installation path. | ||
The tools mpiP needs to be _attached_ to you application through the "LD_PRELOAD" mechanism. On Hawk in most cases it is sufficient to use the provided wrapper script as | |||
{{Command|command= mpirun $MPIP_HOME/../share/trace-mpiP.sh <your_app and options>}} | |||
This will create one or two files with file extension `.mpiP` in the folder. Those files include a consice performance report (`*.1.mpiP`) and an extensive performance report (`*.2.mpiP`), respectively. | |||
The behaviour of mpiP is controlled by options provided via the `MPIP` environment variable. | The behaviour of mpiP is controlled by options provided via the `MPIP` environment variable. | ||
See the mpiP documentation for a detailed description of all options. | See the mpiP documentation for a detailed description of all options. The wrapper on Hawk sets sensible defaults already. You may copy the wrapper script and adapt it to your needs if necessary. | ||
== See also == | == See also == | ||
Revision as of 16:43, 16 March 2023
| The mpiP library is a light-weight profiling library for MPI applications.
To record an MPI profile, simply run the program with the mpiP library preloaded. |
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Note, this page is outdated
Introduction
Usage
First load the related software module
which will set the '$MPIP_HOME' variable to the latest mpiP installation path.
The tools mpiP needs to be _attached_ to you application through the "LD_PRELOAD" mechanism. On Hawk in most cases it is sufficient to use the provided wrapper script as
This will create one or two files with file extension `.mpiP` in the folder. Those files include a consice performance report (`*.1.mpiP`) and an extensive performance report (`*.2.mpiP`), respectively.
The behaviour of mpiP is controlled by options provided via the `MPIP` environment variable. See the mpiP documentation for a detailed description of all options. The wrapper on Hawk sets sensible defaults already. You may copy the wrapper script and adapt it to your needs if necessary.