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

[Bernard Chambon]

Hello,

Using, mpich2 1.4.1p1, running the smallest code (MPI_Init(NULL, NULL) )
I got Segmentation fault (signal 11),  with high numbers of tasks

Someone ran into the same failure ?
Best regards


context : 
 mpich2 1.4.1 p1, compiled with gcc (4.1.2)
 Linux SL5 (kernel 2.6.18-238.12cc.el5)

code :
  if (MPI_Init(NULL, NULL) != MPI_SUCCESS ) {
   printf("Error calling MPI_Init !!, => exiting \n") ; fflush(stdout);
   return(1);
  }

run : 
  mpiexec -verbose -np 255 bin/mpiInit_test   >& mpiInit_test.log

result :
 APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)


mpiInit_test.log file :




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

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