I'm sorry, it's the second time I ask this question. I'm trying to use the MPI subroutine MPI_FILE_OPEN and even with a very simple code lines it doesn't work and I don't understand why !! The other MPI subroutines work very well and IERROR is equal to 0. It's not the case when I try to create or open a file :
integer :: descripteur,ierr
call MPI_FILE_OPEN(MPI_COMM_WORLD,"test.data",MPI_MODE_RDWR + MPI_MODE_CREATE,MPI_INFO_NULL,descripteur,ierr)
The code works normally but the test file isn't created and when I print ierr I had this bizarre value 536929056 !!
Can anyone please have an explanation !!