Difference between revisions of "HOWTO use AmpTools on the JLab farm with MPI"
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'''4)''' Build main AmpTools library with MPI support (temporary branch to support openmpi version 4 on ifarm) | '''4)''' Build main AmpTools library with MPI support (temporary branch to support openmpi version 4 on ifarm) | ||
cd $AMPTOOLS/AmpTools | cd $AMPTOOLS/AmpTools | ||
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make MPI=1 | make MPI=1 | ||
Revision as of 10:03, 13 January 2022
Contents
Load MPI module
On the ifarm you can load the MPI module with
module load mpi/openmpi-4.0.1
providing the binaries below to compile (mpicxx) and run (mpirun) MPI commands
which mpicxx which mpirun
AmpTools Compilation MPI
This example was done in csh on ifarm1901
1) Download latest AmpTools release
git clone git@github.com:mashephe/AmpTools.git
2) Set AMPTOOLS directory
setenv AMPTOOLS_HOME $PWD/AmpTools/ setenv AMPTOOLS $AMPTOOLS_HOME/AmpTools/
3) Put root-config in your path (assumes ROOTSYS set by some other setup script)
setenv PATH $ROOTSYS/bin:$PATH
4) Build main AmpTools library with MPI support (temporary branch to support openmpi version 4 on ifarm)
cd $AMPTOOLS/AmpTools make MPI=1
Fitter Compilation with MPI
The only MPI dependent part of halld_sim is fitMPI.cc is an optional build for MPI fits, analogous to the usual fit.cc without MPI. You can build the fitMPI executable with the following commands (requires git pull of the halld_sim master branch after 1/13/22)
cd $HALLD_SIM_HOME/src/programs/AmplitudeAnalysis/fitMPI/ scons -u install
Performing Fits Interactively
The fitMPI executable is run with mpirun
mpirun N fitMPI -c YOURCONFIG.cfg
where N is the number of parallel processes to use in the fit and YOURCONFIG.cfg is your usual config file. Note: additional command line parameters can be used as well, as needed.
