Hi Ghislain, I tried to run your test with mvapich 1.9 and get a "message truncated" failure at three ranks.
Howard 2014-11-20 8:51 GMT-07:00 Ghislain Viguier <ghislain.vigu...@gmail.com>: > Dear support, > > I'm encountering an issue with the MPI_Neighbor_alltoallw request of > mpi-1.8.3. > I have enclosed a test case with information of my workstation. > > In this test, I define a weighted topology for 5 processes, where the > weight represent the number of buffers to send/receive : > rank > 0 : | x | > 1 : | 2 | x | > 2 : | 1 | 1 | x | > 3 : | 3 | 2 | 3 | x | > 4 : | 5 | 2 | 2 | 2 | x | > > In this topology, the rank 1 will send/receive : > 2 buffers to/from the rank 0, > 1 buffer to/from the rank 2, > 2 buffers to/from the rank 3, > 2 buffers to/from the rank 4, > > The send buffer are defined with the MPI_Type_create_hindexed_block. This > allows to use a same buffer for several communications without duplicating > it (read only). > Here the rank 1 will have 2 send buffers (the max of 2, 1, 2, 2). > The receiver buffer is a contiguous buffer defined with > MPI_Type_contiguous request. > Here, the receiver buffer of the rank 1 is of size : 7 (2+1+2+2) > > This test case succesful for 2 or 3 processes. For 4 processes, the test > fails 1 times for 3 successes. For 5 processes, the test fails all the time. > > The error code is : *** MPI_ERR_IN_STATUS: error code in status > > I don't understand what I am doing wrong. > > Could you please have a look on it? > > Thank you very much. > > Best regards, > Ghislain Viguier > > -- > Ghislain Viguier > Tél. 06 31 95 03 17 > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2014/11/25850.php >
