[mpich-discuss] Problem with Mpich3.0.4 build for WRF run across multiple nodes in a cluster.

[Teck-Bin Arthur Lim]

Hi ,

I met with a basic problem  trying to get old mpich(3.0.4) version to do parallel run across different machines in a mini-cluster.   The error  messages
while invoking the mpiruns  are :

*****************error messages********************
[limtba at fdns00_ws testenv-testlib]$ ./mpi-script
[limtba at fdns00_ws testenv-testlib]$ more log.aout
[mpiexec at fdns00_ws] HYDU_process_mfile_token (./utils/args/args.c:299): token cpu not supported at this time
[mpiexec at fdns00_ws] HYDU_parse_hostfile (./utils/args/args.c:347): unable to process token
[mpiexec at fdns00_ws] mfile_fn (./ui/mpich/utils.c:341): error parsing hostfile
[mpiexec at fdns00_ws] match_arg (./utils/args/args.c:153): match handler returned error
[mpiexec at fdns00_ws] HYDU_parse_array (./utils/args/args.c:175): argument matching returned error
[mpiexec at fdns00_ws] parse_args (./ui/mpich/utils.c:1609): error parsing input array
[mpiexec at fdns00_ws] HYD_uii_mpx_get_parameters (./ui/mpich/utils.c:1660): unable to parse user arguments
[mpiexec at fdns00_ws] main (./ui/mpich/mpiexec.c:153): error parsing parameters
Command exited with non-zero status 255
*****************error messages********************

This old version was downloaded from WRF site (http://www2.mmm.ucar.edu/wrf/OnLineTutorial/compilation_tutorial.php#STEP2) , and was built
with essentially, all the default configuration settings without any options arguments given in the configure/make/make-install process, as :

Ø  ./configure –prefix=$DIR/mpich

Ø  make

Ø  make install

There are  no error messages during the built process, and the mpirun works fine for parallel runs, using multiple processors, on a single NODE only
but met with the above error messages when attempting parallel run across multiple machines.

I need some advice as to how get this old mpich 3.0.4 working across machines.   The OS for these machines are Centos5.5, with gcc4.1.2 and
gcc4.4.7 installations.  As WRF needs gcc4.4 and higher version, I have built the mpich3.04 using gcc4.4.7.

Would appreciate any help and advices…

Many Thanks.

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