Hi Zhong, You might need to use the --export option to srun to make sure that the LD_PRELOAD environment variable is propagated to the executable at run time. �0�2�0�2�0�2 https://slurm.schedmd.com/srun.html I'm not an expert on slurm, but I suspect that it isn't propagating all of your environment variables by default. Also, is this by any chance a system where executables compiled for the compute nodes will run correctly on the login node as well?�0�2 If so, then you might want to start by debugging a local invocation of mpi-io-test by just running it without mpiexec or slurm (i.e., "./mpi-io-test") to narrow down the problem.�0�2 You might also be able to do that in an interactive job on the compute nodes. thanks, -Phil On 11/28/2017 03:57 AM, ��Ӣʯ wrote:

Hi, I'm having trouble when trying to run Darshan with Fortran. I tried to dynamic link Darshan with mpich3.1.3(intel compiler version 15.0.1) applications following the instructions here. But there is no log file generated, and no error. Could you give me any suggestion on how to fix it? http://www.mcs.anl.gov/research/projects/darshan/docs/darshan-runtime.html <http://www.mcs.anl.gov/research/projects/darshan/docs/darshan-runtime.html>

Here is my steps: 1. Compile and install darshan 3.1.4 tar -xvzf darshan-3.1.4.tar.gz cd darshan-3.1.4/darshan-runtime ./configure --with-mem-align=8 --with-log-path=<log directory> --with-jobid-

env=SLURM_JOB_ID CC=mpicc --prefix=<install directory> --with-zlib=<zlib

directory> --enable-HDF5-pre-1.10 --enable-group-readable-logs make make install ./prepare

2. Create log directory, which successfully create the directory perl darshan-mk-log-dirs.pl

3. Set up the environment export PATH=/<darshan-3.1.4 install directory>/bin:$PATH export LD_LIBRARY_PATH=/<darshan-3.1.4 install directory>/lib:$LD_LIBRARY_PATH export INCLUDE=/<darshan-3.1.4 install directory>/include:$INCLUDE export CPATH=/<darshan-3.1.4 install directory>/include:$CPATH export LD_PRELOAD=/path/to/mpi/used/by/executable/lib/libfmpich.so:/<darshan-3.1.4 install directory>/lib/libdarshan.so

4. Compile application (mpi-io-test.f90) mpif90 mpi-io-test.f90 -o mpi-io-test

5. Run application srun -n 24 -p partitionname application

When the application runs complete, no logs is generated. I don't know what the problem is. Can you help me?

Thanks, Zhong

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