Darshan trace file creation

Hello, I built Darshan with Intel MPI 5.1.3 and gcc 4.3.4 with the following configure flags:

./configure --prefix=$HOME/darshan-3.1.2-impi --with-mem-align=8 --with-jobid-env=NONE --with-log-path-by-env=DARSHAN_LOGPATH

which built fine. I set DARSHAN_LOGPATH to darshan-trace-dir and I created the directory darshan-trace-dir. I then executed my MPI code which does I/O using:

mpirun -n 9 -env LD_PRELOAD /home/pr1ebt00/pr1ebt05/darshan-3.1.2-impi/lib/libdarshan.so ./bt.A.9.mpi_io_full

in the same directory that has the darshan-trace-dir directory. However, I do not see any tracefile in the directory darshan-trace-dir and no error messages. Any help will be greatly appreciated.

Thanks in advance, Wadud.