JSAGA

Hello,

I need to submit MPI Job using MPIStart using JSAGA on a e-infrastructure based on gLite.

An example of JDL to submit this job type is the following:

1. mpi-test.jdl
   JobType = "Normal";
   Executable = "/bin/sh";
   CPUNumber = 2
   Arguments = "mpi-start-wrapper.sh mpi-test MPICH";
   StdOutput = "mpi-test.out";
   StdError = "mpi-test.err";
   InputSandbox = {"mpi-start-wrapper.sh","mpi-hooks.sh","mpi-test.c"};
   OutputSandbox = {"mpi-test.err","mpi-test.out"};
   Requirements =
   Member("MPI-START", other.GlueHostApplicationSoftwareRunTimeEnvironment)&&
   Member("MPICH2", other.GlueHostApplicationSoftwareRunTimeEnvironment);

How you can see the Job type is "normal" and I need to add the "CPUNumber" parameter. But I haven't found any way to add this parameter in JSaga.

Using the SPMDVariation parameter I can set the job type to MPICH. In this case I can find, in the JDL generetad, the NodeNumber parameter (mapping the NumberOfProcesses SAGA parameter).

This is the only way I found to set the CPUNumber (NodeNumber is the obsolete name of this parameter) but I couldn't submit my mpi job based on MPIStart because the job type is set to "MPICH" instead of "NORMAL".

I used a workaround to submit my job, I updated the gLite WMS adaptor to have a job "Normal" setting "SPMDVariation=MPI".

I know this is not a generic solution and for this reason I'd like to know when you think to add a way to configure the "CPUNumber" JDL parameter from JSAGA API.

Thanks in advance for your help.

Regards,
Diego Scardaci
INFN Catania