[mpich-discuss] MPI_Comm_connect between windows and linux machines

[Jayesh Krishna]

Hi,
 Have you configured MPICH2 on unix to use the SMPD process manager
(--with-pm=smpd) ?

(PS: Currently SMPD is the only process manager available on windows)
Regards,
Jayesh

-----Original Message-----
From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Jerome Soumagne
Sent: Tuesday, September 29, 2009 7:23 AM
To: Mpich-discuss
Subject: [mpich-discuss] MPI_Comm_connect between windows and linux
machines

Hi,

I posted some days ago and this question follows the previous one I had.
We would like to enable communication using MPI_Comm_connect() between a
linux machine and a windows machine. For this we still use the
MPI_Open_port() function on a first machine to open a port which is then
written to a file. The client then reads this file and tries to connect to
the server, though it does not work in the sense that nothing seems to
happen.

On a Linux machine we get a port which has this syntax:
tag#0$description#aa.bb.cc.dd$port#42593$ifname#aa.bb.cc.dd$

On a Windows machine it has this one:
tag=0 port=1813 description=DINO ifname=aa.bb.cc.dd

(Of course we only open one port but this is just to underline the
difference of syntax)

Is MPICH able to manage a connection between a windows and a linux machine
or is there a way to tell MPICH to use the same port syntax ?
because I guess that this difference of syntax is causing the problem.
We noticed already that trying to connect 32bit machines to 64bit machines
does not seem to be possible, and we would like here to connect a 64 bit
linux machine to a 64 bit windows machine. (everything works fine between
machines which have the same architecture, ie. Linux 64 bits to Linux 64
bits or Linux 32 bits to Linux 32 bits)

Thanks.

Jerome

--
Jérôme Soumagne
CSCS, Swiss National Supercomputing Centre Galleria 2, Via Cantonale  |
Tel: +41 (0)91 610 8258
CH-6928 Manno, Switzerland | Fax: +41 (0)91 610 8282


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