Profiling GEOS-Chem
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Overview
Profiling GEOS-Chem with gprof
The GNU profiler (gprof) is a free, open source software package that you can use to determine which subroutines of GEOS-Chem are taking the most time. If your computer system has the GNU Compiler Collection (GCC)] already installed (as do most modern Unix/Linux clusters), then gprof should also be available for you to use.
GEOS-Chem v11-01 and higher versions have support for gprof. To profile GEOS-Chem, you must compile with the GPROF=y Makefile option, e.g.:
make -j4 GPROF=y ...etc. other makefile options ...
This will add the following compiler switches to the compilation sequence:
| Compiler | Switch to invoke gprof |
|---|---|
| Intel Fortran compiler (ifort) | -p |
| GNU Fortran compiler (gfortran) | -pg |
| PGI Fortran compiler (pgfortran) | -pg |
Profiling GEOS-Chem with TAU
Information to be added