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Extrae: Difference between revisions

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{{Infobox software
{{Infobox software
| description = The Extrae library allows MPI communication events of a parallel program to be recorded as a trace file. Additionally, certain program-specific events can also be included. To record MPI communication events, simply run the program with the Extrae library preloaded.
| description = The Extrae library allows MPI communication events of a parallel program to be recorded as a trace file that can be analysed, e.g., visually with [[Paraver]] or used as an input for a simulator as [https://tools.bsc.es/dimemas Dimemas]. Additionally, certain program-specific events can also be included. To record MPI communication events, simply run the program with the Extrae library preloaded.
| developer              = BSC
| developer              = BSC
| available on          = [[Hazel Hen]], [[Vulcan]]
| available on          = [[Hazel Hen]], [[Vulcan]]
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Now set up the environment for the run.
Now set up the environment for the run.
{{Command| command =<div>export LD_PRELOAD=$EXTRAE_HOME/lib/libmpitrace.so <br>
{{Command| command =<div>export LD_PRELOAD=$HLRS_EXTRAE_ROOT/lib/libmpitrace.so <br>
export EXTRAE_CONFIG_FILE=extrae.xml</div>
export EXTRAE_CONFIG_FILE=extrae.xml</div>
}}
}}

Latest revision as of 08:17, 22 September 2023

Note, this page is outdated

The Extrae library allows MPI communication events of a parallel program to be recorded as a trace file that can be analysed, e.g., visually with Paraver or used as an input for a simulator as Dimemas. Additionally, certain program-specific events can also be included. To record MPI communication events, simply run the program with the Extrae library preloaded.
Developer: BSC
Platforms: Hazel Hen, Vulcan
Category: Performance Analyzer
License: GPL
Website: Extrae homepage


Note, this page is outdated

Introduction

Usage

First load the needed software module:

module load performance/extrae


Then create a configuration file for the extrae run. Commented templates can be found under $EXTRAE_HOME/share/example.

Now set up the environment for the run.

export LD_PRELOAD=$HLRS_EXTRAE_ROOT/lib/libmpitrace.so
export EXTRAE_CONFIG_FILE=extrae.xml

Finally run your application as usual. This will generate the needed tracefiles.

Viewing traces with Paraver

To create a tracefile which is viewable with Paraver we have to convert the generated traces to a prv file

mpi2prv -f TRACE.mpits -o output.prv


Trouble shooting

See also

External Links