[mpich-discuss] Another integer overflow

Guo, Yanfei yguo at anl.gov
Thu Jan 31 12:53:05 CST 2019

Hi Joachim,

Thanks for reporting. Let me try it on our side.


Yanfei Guo
Assistant Computer Scientist

On 1/31/19, 12:41 PM, "Joachim Protze via discuss" <discuss at mpich.org> wrote:

    Hi all,
    we found another integer overflow when using MPI_Sendrecv_replace, see 
    attached file.
    When the buffer size exceeds MAX_INT, a segmentation fault occurs.
    I could reproduce this with the MPICH 3.3a2 installation on my Ubuntu 
    @Jeff: I could reproduce the segfault as well as with IntelMPI 2018
    IntelMPI 2019 detects a message truncation
    Dipl.-Inf. Joachim Protze
    IT Center
    Group: High Performance Computing
    Division: Computational Science and Engineering
    RWTH Aachen University
    Seffenter Weg 23
    D 52074  Aachen (Germany)
    Tel: +49 241 80- 24765
    Fax: +49 241 80-624765
    protze at itc.rwth-aachen.de

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