Better/more description of msa_fix_ld

modular-jobs.rst

@@ -75,8 +75,6 @@ When the nodes of a job belong to different interconnects and MPI communication
 
 To request gateway nodes for a job the mandatory option --gw_num has to be specified at submit/allocation time. In addition, communication with the psgwd has to be ensured via loading the software module **pscom-gateway** either via ``xenv`` or the ``module`` command.
 
-**April 2019** For the time being, prefixing binaries via ``msa_fix_ld`` is necessary, due to a libmpi version that does not support the psgwd. We hope this will go away soon.
-
 To start an interactive pack job using two gateway nodes the following command must be used:
 
 .. code-block:: none
@@ -99,6 +97,19 @@ When submitting a job that will run later, you have to specify the number of gat
 
   srun xenv -L pscom-gateway msa_fix_ld ./prog1 : xenv -L pscom-gateway msa_fix_ld ./prog2
 
+Current MPI Workaround (April 2019)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+For the time being, prefixing binaries via ``msa_fix_ld`` is necessary. This is due to the fact that the installed libmpi version does not support the psgwd. We hope this will go away soon.
+``msa_fix_ld`` is modifying the environment, so it might influence the modules you load.
+
+.. code-block:: none
+
+  #!/bin/bash
+  export PSP_PSM=1
+  export LD_LIBRARY_PATH="/usr/local/jsc/msa_parastation_mpi/lib:/usr/local/jsc/msa_parastation_mpi/lib/mpi-hpl-gcc/:${LD_LIBRARY_PATH}"
+  $*
+
 Debugging
 ~~~~~~~~~