Re: [Boost-users] boost MPI error MPI_ERR_TRUNCATE: message truncated

Subject: Re: [Boost-users] boost MPI error MPI_ERR_TRUNCATE: message truncated
From: Matthias Troyer (troyer_at_[hidden])
Date: 2010-07-07 14:05:19

Then why don't you posy in that thread instead of starting new threads every day?

On 7 Jul 2010, at 12:02, Jack Bryan wrote:

> Hi , 
> 
> I have post my code with 4 attachments about two days ago. 
> 
> thanks
> 
> From: troyer_at_[hidden]
> Date: Wed, 7 Jul 2010 12:00:38 -0600
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] boost MPI error MPI_ERR_TRUNCATE: message	truncated
> 
> 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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