HI Ben,
What version of Open MPI are you trying to use?
Also, could you describe something about your system. If its a cluster
what sort of interconnect is being used.
Howard
2017-11-20 14:13 GMT-07:00 Benjamin Brock <br...@cs.berkeley.edu>:
> What's the proper way to use shmem_int_fadd() in OpenMPI's SHMEM?
>
> A minimal example seems to seg fault:
>
> #include <cstdlib>
> #include <cstdio>
>
> #include <mpp/shmem.h>
>
> int main(int argc, char **argv) {
> shmem_init();
> const size_t shared_segment_size = 1024;
> void *shared_segment = shmem_malloc(shared_segment_size);
>
> int *arr = (int *) shared_segment;
> int *local_arr = (int *) malloc(sizeof(int) * 10);
>
> if (shmem_my_pe() == 1) {
> shmem_int_fadd((int *) shared_segment, 1, 0);
> }
> shmem_barrier_all();
>
> return 0;
> }
>
>
> Where am I going wrong here? This sort of thing works in Cray SHMEM.
>
> Ben Bock
>
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