[mpich-discuss] Fwd: Can't receive messages
thakur at mcs.anl.gov
Sun Dec 29 23:39:48 CST 2013
Try adding an fflush(stdout) after the printf after the recv.
On Dec 29, 2013, at 12:50 PM, Matthias Neuer <mneuer at web.de> wrote:
> -------- Original Message --------
> Subject: Can't receive messages
> Date: Sun, 29 Dec 2013 19:00:05 +0100
> From: Matthias Neuer <mneuer at web.de>
> To: discuss at mpich.org
> I installed MPICH on 2 machines (called notebook and matze-debian) using
> the same sourcecode. The output of mpichversion is both times:
> MPICH Version: 3.0.4
> MPICH Release date: Wed Apr 24 10:08:10 CDT 2013
> MPICH Device: ch3:nemesis
> MPICH configure: --disable-f77 --disable-fc
> MPICH CC: cc -O2
> MPICH CXX: c++ -O2
> MPICH F77: no
> MPICH FC: no
> I wrote a small test program which I send as an attachment.
> On execution on the machine matze-debian I get the following:
> Process 0 is on matze-debian
> Process 2 is on matze-debian
> Process 1 is on notebook
> received: Hello, from number 2 on matze-debian
> Process 2 has sent the message
> Process 1 has sent the message
> I don't receive the message from process number 1, but the output
> suggests that the message was succesfully sent. Actually I checked the
> network traffic using wireshark and matze-debian received a package in
> which I found the sent message. So somehow the program does not
> recognize the arrival of the message.
> When I run the program on a single machine it works.
> I don't know if this is a programming error or a configuration error.
> Thanks for your help
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