If not too much trouble, can you extract just the alltoallv portion and provide 
us with a small reproducer?


> On Apr 5, 2015, at 12:11 PM, Hamidreza Anvari <hr.anv...@gmail.com> wrote:
> 
> Hello,
> 
> I am converting an existing MPI program in C++ to Java using OpenMPI 1.8.4,
> At some point I have a allToAllv() code which works fine in C++ but receives 
> error in Java version:
> 
> MPI.COMM_WORLD.allToAllv(data, subpartition_size, subpartition_offset, 
> MPI.INT <http://mpi.int/>,
> data2,subpartition_size2,subpartition_offset2,MPI.INT <http://mpi.int/>);
> 
> Error:
> *** An error occurred in MPI_Alltoallv
> *** reported by process [3621322753,9223372036854775811]
> *** on communicator MPI_COMM_WORLD
> *** MPI_ERR_TRUNCATE: message truncated
> *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
> ***    and potentially your MPI job)
> 3 more processes have sent help message help-mpi-errors.txt / 
> mpi_errors_are_fatal
> Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error 
> messages
> 
> Here are the values for parameters:
> 
> data.length = 5
> data2.length = 20
> 
> ---------- Rank 0 of 4 ----------
> subpartition_offset:0,2,3,3,
> subpartition_size:2,1,0,2,
> subpartition_offset2:0,5,10,15,
> subpartition_size2:5,5,5,5,
> ----------
> ---------- Rank 1 of 4 ----------
> subpartition_offset:0,2,3,4,
> subpartition_size:2,1,1,1,
> subpartition_offset2:0,5,10,15,
> subpartition_size2:5,5,5,5,
> ----------
> ---------- Rank 2 of 4 ----------
> subpartition_offset:0,1,2,3,
> subpartition_size:1,1,1,2,
> subpartition_offset2:0,5,10,15,
> subpartition_size2:5,5,5,5,
> ----------
> ---------- Rank 3 of 4 ----------
> subpartition_offset:0,1,2,4,
> subpartition_size:1,1,2,1,
> subpartition_offset2:0,5,10,15,
> subpartition_size2:5,5,5,5,
> ----------
> 
> Again, this is a code which works in C++ version.
> 
> Any help or advice is greatly appreciated.
> 
> Thanks,
> -- HR
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