Re: [Boost-users] boost MPI error MPI_ERR_TRUNCATE

Subject: Re: [Boost-users] boost MPI error MPI_ERR_TRUNCATE
From: Matthias Troyer (troyer_at_[hidden])
Date: 2010-07-02 13:32:10

On 2 Jul 2010, at 10:24, Jack Bryan wrote:

> Dear All:
> 
> With boost MPI, I trying to ask some worker nodes to send some message to the single master node. 
> I am using OpenMPI 1.3.4.
> 
> I use an array recvArray[row][column] to receive the message, which is a C++ class that contain int, member functions. 
> But I got an error of 
> 
> terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::mpi::exception> >'
>   what():  MPI_Test: MPI_ERR_TRUNCATE: message truncated
> [n124:126639] *** Process received signal ***
> [n124:126639] Signal: Aborted (6)
> [n124:126639] Signal code:  (-6)
> 
> It seems that the master cannot find enough space for the receicved message. 
> 
> But, I have decleared the recvArray<calssPackage> , which is a vector with element as my received class package. 
> 
> The error is very wierd.
> 
> When I open the recvied package, the elements are not expected numbers buy only some very large or small numbers.
> 
> Any help is appreciated. 

Can you please post an example code, otherwise it is impossible to help.

Matthias