On 7 Sep 2010, at 22:41, Francesco Biscani wrote:
Just an update, in case anyone is still following this.
It turns out that even when serializing the classes to a text archive, converting it to string, transmit the string via boost::mpi and then rebuilding the classes on the other side from the transmitted string, I still have the same error as reported above for heterogeneous clusters (in homogeneous clusters it works seemingly ok).
So what I'm doing now is to send the archive in string form using directly the MPI_* primitives (using a std::vector<char> as buffer and MPI_CHAR datatype). This works in all configurations I've tested.
I'm not entirely sure if the problem is on my side or if this is a genuine bug, but I would like to provide any info/testing necessary to solve this issue.
Thanks again,
Can you just send me a program that exhibits the problem? Also, did you test whether your MPI library works on the heterogeneous machine when making the MPI_* calls and packing data into a buffer using the MPI_Pack/MPI_Unpack calls? There might be a problem with pack/unpack on your system. Matthias