George -- When I build the SVN trunk (r29201) on 64 bit linux, your attached test case hangs:
----- ❯❯❯ mpicc intercomm_create.c -o intercomm_create ❯❯❯ mpirun -np 4 intercomm_create b: MPI_Intercomm_create( intra, 0, intra, MPI_COMM_NULL, 201, &inter) [rank 4] b: MPI_Intercomm_create( intra, 0, intra, MPI_COMM_NULL, 201, &inter) [rank 5] b: MPI_Intercomm_create( intra, 0, intra, MPI_COMM_NULL, 201, &inter) [rank 6] b: MPI_Intercomm_create( intra, 0, intra, MPI_COMM_NULL, 201, &inter) [rank 7] a: MPI_Intercomm_create( ab_intra, 0, ac_intra, 0, 201, &inter) (0) a: MPI_Intercomm_create( ab_intra, 0, ac_intra, 0, 201, &inter) (0) a: MPI_Intercomm_create( ab_intra, 0, ac_intra, 0, 201, &inter) (0) a: MPI_Intercomm_create( ab_intra, 0, ac_intra, 0, 201, &inter) (0) c: MPI_Intercomm_create( MPI_COMM_WORLD, 0, intra, 0, 201, &inter) [rank 4] c: MPI_Intercomm_create( MPI_COMM_WORLD, 0, intra, 0, 201, &inter) [rank 5] c: MPI_Intercomm_create( MPI_COMM_WORLD, 0, intra, 0, 201, &inter) [rank 6] c: MPI_Intercomm_create( MPI_COMM_WORLD, 0, intra, 0, 201, &inter) [rank 7] [hang] ----- On my Mac, it hangs without printing anything: ----- ❯❯❯ mpicc intercomm_create.c -o intercomm_create ❯❯❯ mpirun -np 4 intercomm_create [hang] ----- On Sep 18, 2013, at 1:48 AM, George Bosilca <bosi...@icl.utk.edu> wrote: > Here is a quick (and definitively not the cleanest) patch that addresses the > MPI_Intercomm issue at the MPI level. It should be applied after removal of > 29166. > > I also added the corrected test case stressing the corner cases by doing > barriers at every inter-comm creation and doing a clean disconnect. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
