Hello, I've been trying to compile and run a very simple mpi test on our cluster with intel-mpi and openmpi. The test program is below. When I run with openmpi everything is fine. When I run with intel-mpi, I receive the following error This requires fcntl(2) to be implemented. As of 8/25/2011 it is not. Generic MPICH Message: File locking failed in ADIOI_Set_lock(fd 6,cmd F_SETLKW/7,type F_WRLCK/1,whence 0) with return value FFFFFFFF and errno 26. - If the file system is NFS, you need to use NFS version 3, ensure that the lockd daemon is running on all the machines, and mount the directory with the 'noac' option (no attribute caching). - If the file system is LUSTRE, ensure that the directory is mounted with the 'flock' option. ADIOI_Set_lock:: Function not implemented ADIOI_Set_lock:offset 0, length 4 Any thoughts on how to proceed? The size/format of the file read in seems to make no difference. Regards, Luke #include <stdio.h> #include <stdlib.h> #include <mpi.h> int main(int argc, char **argv) { int buf, err; MPI_File fh; MPI_Status status; MPI_Init(&argc, &argv); if (argc != 2) { printf("Usage: %s filename\n", argv[0]); MPI_Finalize(); return 1; } err = MPI_File_open(MPI_COMM_WORLD, argv[1], MPI_MODE_CREATE | MPI_MODE_RDWR, MPI_INFO_NULL, &fh); if (err != MPI_SUCCESS) printf("Error: MPI_File_open()\n"); err = MPI_File_write_all(fh, &buf, 1, MPI_INT, &status); if (err != MPI_SUCCESS) printf("Error: MPI_File_write_all()\n"); MPI_File_close(&fh); MPI_Finalize(); return 0; } _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss