[mpich-discuss] Weird thing -- MPICH2 on domain

[Qiguo Jing]

Jayesh,

I did not run the program across machines. My laptop has 8 cores, and my 
desktop has 4 cores. I ran the program individually on each PC.

Here is the command line: mpiexec -user 0 -np 4 test.exe

What the program does is: Using the main processor (imrank = 0) to create 
a file and write records; after that, all processors will access this file 
and read the records multiple times (Open the file in read only --> Read 
records --> Close file --> Reopen --> And so on). 

Thanks.



From:
Jayesh Krishna <jayesh at mcs.anl.gov>
To:
discuss at mpich.org, 
Cc:
QJing at TrinityConsultants.com
Date:
01/29/2013 10:24 AM
Subject:
Re: [mpich-discuss] Weird thing -- MPICH2 on domain



Hi,
 Is there any communication (MPI) between the laptop and the desktop? 
MPICH2 currently does not support running MPI programs across 32-bit and 
64-bit machines.
 How are you running your program (The complete mpiexec command and the 
output. Please copy-paste it from the command window)?

Regards,
Jayesh 

----- Original Message -----
From: "Qiguo Jing" <QJing at TrinityConsultants.com>
To: mpich-discuss at mcs.anl.gov
Sent: Friday, January 25, 2013 5:16:58 PM
Subject: [mpich-discuss] Weird thing -- MPICH2 on domain


All, 

I have been encountering a weird thing, which draw me crazy. I hope 
someone here can help me. 

I have two computers, a laptop (Windows 7 64 bit) and a desktop (Window 7 
32 bit). Both are in company domain, and I use the some information to 
login. So the MPICH2 registration information are the same for both 
computers. I developed a parallel FORTRAN program using my laptop. 

1. If I connect the internet cable on laptop. --> Program works. Results 
are good. 
2. If I disconnect the internet cable on laptop. --> Program fails, saying 
Program Exception - access violation 
3. If I connect the internet cable on Desktop. --> Program runs and 
finishes, but the results are wrong. Slave processors and master processor 
do not communicate, so that results on slave processor can not be passed 
to main processor. 
4. If I disconnect the internet cable on Desktop. -> Program works. 
Results are good. 


Can someone help? 


Thanks. 
_________________________________________________________________________

The information transmitted is intended only for the person or entity to
which it is addressed and may contain confidential and/or privileged
material.  Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or
entities other than the intended recipient is prohibited.   If you
Received this in error, please contact the sender and delete the material 
from any computer.
_________________________________________________________________________ 
_______________________________________________
discuss mailing list     discuss at mpich.org
To manage subscription options or unsubscribe:
https://lists.mpich.org/mailman/listinfo/discuss


_________________________________________________________________________

The information transmitted is intended only for the person or entity to
which it is addressed and may contain confidential and/or privileged
material.  Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or
entities other than the intended recipient is prohibited.   If you
Received this in error, please contact the sender and delete the material 
from any computer.
_________________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mpich.org/pipermail/discuss/attachments/20130129/ff800b69/attachment.html>