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Subject: Re: [Boost-users] boost MPI error MPI_ERR_TRUNCATE: message truncated
From: Matthias Troyer (troyer_at_[hidden])
Date: 2010-07-07 14:00:38


Hi Jack,

Without seeing the relevant part of your program we cannot help.

Matthias

On 7 Jul 2010, at 09:43, Jack Bryan wrote:

> Dear All:
>
> I need to transfer some messages from workers master node on MPI cluster with Open MPI.
>
> I use boost MPI API in my program.
>
> The number of messages is fixed.
>
> When I increase the number of worker nodes, i got error:
>
> ------------------------------------------
>
> terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::mpi::exception> >'
> what(): MPI_Unpack: MPI_ERR_TRUNCATE: message truncated
> [n231:45873] *** Process received signal ***
> [n231:45873] Signal: Aborted (6)
> [n231:45873] Signal code: (-6)
> [n231:45873] [ 0] /lib64/libpthread.so.0 [0x3c50e0e4c0]
> [n231:45873] [ 1] /lib64/libc.so.6(gsignal+0x35) [0x3c50230215]
> [n231:45873] [ 2] /lib64/libc.so.6(abort+0x110) [0x3c50231cc0]
>
>
> --------------------------------------------------------------
>
> For 40 workers , it works well.
>
> But for 50 workers, it got this error.
>
> The largest message size is not more then 72 bytes.
>
> Any help is appreciated.
>
> thanks
>
> Jack
>
> July 7 2010
>
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