Hi, Marcin
Sorry for the late response (somehow this one got lost in the clutter). We
added support for shmem_ptr in the UCX SPML in Open MPI 3.0. However, in
order to use it, you must install the Knem kernel module (
https://github.com/hjelmn/xpmem).
Best,
Josh
On Wed, Apr 18, 2018 at 4:01 AM,
**xpmem kernel module.
On Fri, Jun 1, 2018 at 3:16 PM, Joshua Ladd wrote:
> Hi, Marcin
>
> Sorry for the late response (somehow this one got lost in the clutter). We
> added support for shmem_ptr in the UCX SPML in Open MPI 3.0. However, in
> order to use it, you must install the Knem kernel mod
Dear all,
Looks like I have a weird issue never encountered before. While trying to
run simplest "Hello world" program, I get:
$ cat hello.c
#include
int main(int argc, char* argv[])
{
MPI_Init(&argc, &argv);
MPI_Finalize();
return 0;
}
$ mpicc hello.c -o hello
$ mpirun -np 1 ./hello
Why do you need kernel support for interprocess shared memory? Just
allocate the symmetric heap as shared-memory. Sure, this does not support
other symmetric variables, but shmem_ptr can detect that and return NULL
for those cases.
shmem_ptr should behave similar to MPI_Win_shared_query...
Jeff
