[mpich-discuss] MPICH2 (or MPI_Init) limitation | scalability

[Bernard Chambon]

Le 19 janv. 2012 à 18:03, Darius Buntinas a écrit :

> Can you also send me the output when using verbose and eth2, and without specifying -iface:
> 
>    mpiexec -verbose -iface eth2 -n 64 bin/basic_test
>    mpiexec -verbose -n 64 bin/basic_test
> 
> Thanks,
> -d


Of course, here are the files (without_iface, with_iface_eth0 | 2)

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Thanks you for taking time
Best regards





the code : (compile with gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-48)

  if (MPI_Init(NULL, NULL) != MPI_SUCCESS ) {
   printf("Error calling MPI_Init !!, => exiting \n") ; fflush(stdout);
   return(1);
  } else {
   MPI_Finalize();  
   printf("It's OK \n") ; fflush(stdout);
  }


>mpich2version 
MPICH2 Version:    	1.4.1p1
MPICH2 Release date:	Thu Sep  1 13:53:02 CDT 2011
MPICH2 Device:    	ch3:nemesis
MPICH2 configure: 	--prefix=//scratch/BC/mpich2-1.4
MPICH2 CC: 	/usr/bin/gcc -m64   -O2
MPICH2 CXX: 	c++ -m64  -O2
MPICH2 F77: 	/usr/bin/f77   -O2
MPICH2 FC: 	f95  





---------------
Bernard CHAMBON
IN2P3 / CNRS
04 72 69 42 18