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High Performance Computing
This Information is Intended for: Faculty, Guests, Researchers, Staff
Last Updated: December 13, 2023
Average Rating: Not Rated
This Information is Intended for: Faculty, Guests, Researchers, Staff
Last Updated: December 13, 2023
Average Rating: Not Rated
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Current Version
The current version of Darshan running on SeaWulf is 3.1.4. To make use of Darshan utilities load the following modules:
module load darshan/3.1.4
Compiling for Darshan
Darshan is currently configured on SeaWulf for the mpicc compiler. Here is an example of compiling a program to work with Darshan:
module load mvapich2/gcc/64/2.2rc1 mpicc -o my_prog my_prog.c -lm
Submitting Jobs with Darshan
In order to prevent Darshan and MPI symbols from being pulled into unrelated binaries by exporting LD_PRELOAD, you must set the LD_PRELOAD variable whenever you execute a program. The following Slurm job script is an example of how you would do so:
#!/bin/bash #SBATCH --nodes=2 #SBATCH --ntasks-per-node=28 #SBATCH --time=05:00 #SBATCH --job-name darshan_example #SBATCH -p short-28core module load shared module load mvapich2/gcc/64/2.2rc1 cd $HOME mpiexec -n 2 -env LD_PRELOAD /gpfs/software/darshan/darshan-3.1.4/darshan-runtime/lib/libdarshan.so ./my_prog
Log Files
Darshan log files are stored at the following location, in sub-directories based on the date of execution:
/gpfs/software/darshan/darshan-3.1.4/darshan-logs
For more information, visit: http://www.mcs.anl.gov/research/projects/darshan/documentation/