Modify paralelization test

tests/unit_tests/test_parallel/run_parallel_tests.sh

 #!/usr/bin/env bash
 
+set -x
+
+ulimit -s unlimited
+export OMP_STACKSIZE=1G
+
 #source compiler-select intel
 #export FI_PROVIDER=tcp
 #export PATH=/usr/local/impi/bin:${PATH}