[mpich-discuss] error in MPI_INIT on 64 bit machine

[Jayesh Krishna]

Hi,
 From the error messages it looks like the spawned process is not able to connect back to the parent process (the parent process TCP/IP port is blocked) OR the parent process crashed after spawning the child process. 
 Can you spawn your program from another MPI program (non-matlab/simulink MPI program launched from the command line)?
 Try turning off any firewalls running on your system. I don't have Matlab here - do you have a test case that reproduces the problem (preferably without using Matlab)?

Regards,
Jayesh

----- Original Message -----
From: "Cugnon" <frederic.cugnon at samtech.com>
To: mpich-discuss at mcs.anl.gov
Sent: Tuesday, January 25, 2011 9:10:58 AM
Subject: [mpich-discuss]  error in MPI_INIT on 64 bit machine





Hi 



I have been using MPICH2 to implement co-simulation between Matlab Simulink and my code. I have implemented a master-slave procedure, launching my code from a Matlab S-function using MPI_Comm_spawn. Things are working perfectly on an old Windows XP computer with 32 bit version of both softwares. When I move to 64 bit versions on Windows Seven system, I have errors when the slave process calls the MPI_Init function. Depending on the communication channel that I use (sock or nemesis), I get slightly different error messages when MPI_Init is called (see attached log files). 



Could anybody help me with this problem? 



Thanks 



Frédéric CUGNON 
Samtech SA 
Rue des Chasseurs-Ardennais 8 
4031 Angleur 
tel int-32-4-361.69.69 
fax int-32-4-361.69.80 
frederic.cugnon at samtech.com 


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