Hello,

1. I'm using Java/Javac version 1.8.0_20 under OS X 10.10.2.

2. I have used the following configuration for making OpenMPI:
./configure --enable-mpi-java
--with-jdk-bindir="/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands"
--with-jdk-headers="/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers"
--prefix="/users/hamidreza/openmpi-1.8.4"

make all install

3. As a logical point of view, size2 is the maximum expected data to
receive, which in turn might be less that this maximum.

4. I will try to prepare a working reproducer of my error and send it to
you.

Thanks,
-- HR

On Mon, Apr 6, 2015 at 10:46 AM, Ralph Castain <r...@open-mpi.org> wrote:

> I've talked to the folks who wrote the Java bindings. One possibility we
> identified is that there may be an error in your code when you did the
> translation
>
> My immediate thought is that each process can not receive more elements
> than it was sent to them. That's the reason of truncation error.
>
> These are the correct values:
>
> rank 0 - size2: 2,2,1,1
> rank 1 - size2: 1,1,1,1
> rank 2 - size2: 0,1,1,2
> rank 3 - size2: 2,1,2,1
>
>
> Can you check your code to see if perhaps the values you are passing
> didn't get translated correctly from your C++ version to the Java version?
>
>
>
> On Apr 6, 2015, at 5:03 AM, Howard Pritchard <hpprit...@gmail.com> wrote:
>
> Hello HR,
>
> It would also be useful to know which java version you are using, as well
> as the configure options used when building open mpi.
>
> Thanks,
>
> Howard
>
>
>
> 2015-04-05 19:10 GMT-06:00 Ralph Castain <r...@open-mpi.org>:
>
>> 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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