Hello, I have installed Darshan version 3.4.6 on an HPC cluster with the following configuration: ./configure --enable-mmap-logs --with-log-path=/mnt/lustre-grete/usr/u11509/DARSHAN/darshan-logs --with-jobid-env=PBS_JOBID --prefix=/path/to/DARSHAN/ CC=mpicc The installation of darshan-runtime and darshan-util is correctly done. Then I followed the instructions: *1- export **LD_PRELOAD=/**path/to**/lib/libdarshan.s**o* *2- export DARSHAN_ENABLE_NONMPI=1* *3- python Hello_world*.py I get this error: darshan_library_warning: unable to create log file /path/to/darshan-logs/2024/11/18/u11509_python_id1736997-1736997_11-18-34797-17835898535848440029.darshan_partial. The code is siply a hello world code, and python package doesn't have any problem. The permissions are also met. Would you please help me understand the issue? Sincerely Zoya Masih