a simple MPI can't run after compile - runtime-error

Question

i write a simple MPI program:
#include <stdio.h>
2 #include "mpi.h"
3
4 int main(int argc,char* argv[])
5 {
6 int rank;
7 int size;
8
9 MPI_Init(0,0);
10 MPI_Comm_rank(MPI_COMM_WORLD,&rank);
11 MPI_Comm_size(MPI_COMM_WORLD,&size);
12 printf("Hello World from process %d of %d\n",rank,size);
13 MPI_Finalize();
14 return 0;
15 }
the program compile successflly,but can't run
i use "mpirun -np 4 ./hello" or "mpirun -np 4 hello"
it shows like this:
_create_ep, create command failed: Operation not permitted
GLEX_ERR(ln0): _init_glex(608), _create_ep: system error
_create_ep, create command failed: Operation not permitted
GLEX_ERR(ln0): _init_glex(608), _create_ep: system error
_create_ep, create command failed: Operation not permitted
GLEX_ERR(ln0): _init_glex(608), _create_ep: system error
Fatal error in MPI_Init: Other MPI error, error stack:
MPIR_Init_thread(498)........:
MPID_Init(187)...............: channel initialization failed
MPIDI_CH3_Init(89)...........:
MPID_nem_init(320)...........:
MPID_nem_glex_init(74).......:
MPIDI_nem_glex_init_glex(610): Cannot create GLEX endpoint.
besides,i wirite this program on HPC.And I guess the problem "Cannot create GLEX endpoint" maybe related to the HPC(HPC has already deployed MPI).

Answer 1

I'm not too sure of the level of support for MPI_Init() when null pointers are passed as arguments (I think there is something like calling it without arguments supported since MPI 3.0, but I wouldn't commit on that).
However, I would definitely replace MPI_Init(0,0) in your code by MPI_Init( &argc, &argv ) for a starter.
EDIT: my bad, MPI_Init() is supposed to support null pointer as argument as stated here.
However, trying with MPI_Init( &argc, &argv ) would still be my first try for fixing the issue.