Hi, Let us know how it goes. -Jayesh ----- Original Message ----- From: "Qiguo Jing" <[email protected]> To: "Jayesh Krishna" <[email protected]> Cc: [email protected], [email protected] Sent: Tuesday, January 29, 2013 4:42:00 PM Subject: Re: [mpich-discuss] Weird thing -- MPICH2 on domain Jayesh, I tried the latest windows version 1.4.1p1 of MPICH2. The same error. Thinking that I may need to modify my codes. It seems that using one processor to create a file then reading the file through all processors will generate such kind of errors. Thanks. From: Jayesh Krishna <[email protected]> To: [email protected], Cc: [email protected] Date: 01/29/2013 01:53 PM Subject: Re: [mpich-discuss] Weird thing -- MPICH2 on domain Hi, Can you try out the latest Windows version, 1.4.1p1, of MPICH2 ( http://www.mpich.org/downloads/ )? I don't remember when we changed the default channel on Windows from sock to nemesis. This could be the issue in your case. Please try the latest version available and let us know the results. Regards, Jayesh ----- Original Message ----- From: "Qiguo Jing" <[email protected]> Cc: [email protected], [email protected] Sent: Tuesday, January 29, 2013 12:44:55 PM Subject: Re: [mpich-discuss] Weird thing -- MPICH2 on domain Scott, With and without the wired connection, laptop has the same hostname, and desktop has the same hostname. But laptop and desktop have different hostnames. I am using mpich2-1.2.1-win-ia32.msi on both machines. Laptop is win7 64, and desktop is win7 32. Another issue is: When I use laptop from home, if I use 3 or less processors, for example "mpiexec -user 0 -np 3 test.exe", it works; however, if I use more than 3 processors, for example, "mpiexec -user 0 -np 4 test.exe", it fails, and the more processors I specified, the earlier I can see it fails. Best, From: "Atchley, Scott" <[email protected]> To: "[email protected]" <[email protected]>, Date: 01/29/2013 11:41 AM Subject: Re: [mpich-discuss] Weird thing -- MPICH2 on domain Sent by: [email protected] Is it a hostname issue? What is the hostname on both machines with and without the wired connection? What does hydra expect to use? Scott On Jan 29, 2013, at 11:24 AM, Jayesh Krishna <[email protected]> wrote:

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" <[email protected]> To: [email protected] 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. _________________________________________________________________________

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_______________________________________________ discuss mailing list [email protected] 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. _________________________________________________________________________ _______________________________________________ discuss mailing list [email protected] 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. _________________________________________________________________________