IMPI Creates Large Files on Startup

Operating system and version: CentOS Linux release 7.5.1804
Intel MPI version: 2019.5.281
Compiler and version: 19.0.5.281
Fabric: Mellanox Technologies MT27500
Libfabric version: 1.7.2

I have a quick question regarding Intel MPI and large (> 1GB) files created by MPI at runtime. We maintain part of a large code and the standard test suite for this code imposes a limit on file size to keep the tests small. File size is restricted using "limit filesize 1024m" (csh), but I also tested with "limit -f 1024000" (BASH) with the same results. When I start mpirun for any code requesting more than a single core, I apparently exceed this filesize limit and the code crashes. A minimal example:

   program hello
   include 'mpif.h'
   integer rank, size, ierror, tag, status(MPI_STATUS_SIZE)

   call MPI_INIT(ierror)
   call MPI_COMM_SIZE(MPI_COMM_WORLD, size, ierror)
   call MPI_COMM_RANK(MPI_COMM_WORLD, rank, ierror)
   print*, 'node', rank, ': Hello world'
   call MPI_FINALIZE(ierror)
   end

This runs fine when called as follows:

#!/bin/bash
ulimit -f 1024000
nproc=1
mpirun -n $nproc -ppn $nproc ./mpi-test

It also runs fine without the ulimit and with nproc increased, but crashes with the ulimit and nproc >= 2 with the following error:

===================================================================================
=   BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
=   RANK 0 PID 78358 RUNNING AT pc-beethoven.cluster
=   KILLED BY SIGNAL: 25 (File size limit exceeded)
===================================================================================

===================================================================================
=   BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
=   RANK 1 PID 78359 RUNNING AT pc-beethoven.cluster
=   KILLED BY SIGNAL: 9 (Killed)
===================================================================================

As this minimal example doesn't read or write any files, I guess the files must belong to mpirun. Is this "normal" behavior with IMPI (something I need to contact the main developers about), or does it indicate a problem with our IMPI installation?

Thanks in advance for any help!