Michael,
Can you upgrade to a newer version of Open MPI? There have been several
bugfix releases of the 1.1 series, and we are on the verge of releasing v1.2.
So, please try either 1.1.4 (or 1.1.5rc1), and/or try v1.2rc3.
On 3/12/07, Michael Epitropakis <mike...@student.math.upatras.gr> wrote:
Dear ompi users,
I am using OpenMPI in order to parallelize an evolutionary algorithm.
During the execution of the algorithm I have to send many same messages to
some nodes. So, in order to generate and use these messages i use MPI_Pack
and MPI_Unpack Each message has the following structure:
{int, int, int[size], double[size2], double}
In the beginning of the Algorithm everything is going well... but suddenly
something is going wrong and i get the following messages::
[compute-0-1.local:32461] *** An error occurred in MPI_Unpack
[compute-0-1.local:32461] *** on communicator MPI_COMM_WORLD
[compute-0-1.local:32461] *** MPI_ERR_TRUNCATE: message truncated
[compute-0-1.local:32461] *** MPI_ERRORS_ARE_FATAL (goodbye)
With a lot of debugging I found out that the first two integers, let me
call them x, y, were not the values that i was expecting (the values that
i have packed!!!). They were very strange: either big positive integers or
big negative integers. I checked the buffer that I am using for these
messages and it is much bigger than the required message storage. I can;t
think of something else that could probably caused that problem
Can you please help me with this?? What could have probably caused this
problem?
I am using OpenMPI version: Open MPI: 1.1 Open MPI SVN revision: r10477
Thank you in advance
Michael.
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