<font size=2 face="sans-serif">Scott,</font>
<br>
<br><font size=2 face="sans-serif">With and without the wired connection,
laptop has the same hostname, and desktop has the same hostname. But laptop
and desktop have different hostnames.</font>
<br>
<br><font size=2 face="sans-serif">I am using mpich2-1.2.1-win-ia32.msi
on both machines. Laptop is win7 64, and desktop is win7 32.</font>
<br>
<br><font size=2 face="sans-serif">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.</font>
<br>
<br><font size=2 face="sans-serif">Best,</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">"Atchley, Scott" <atchleyes@ornl.gov></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif">"discuss@mpich.org" <discuss@mpich.org>,
</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">01/29/2013 11:41 AM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [mpich-discuss] Weird thing -- MPICH2
on domain</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">discuss-bounces@mpich.org</font></table>
<br>
<hr noshade>
<br>
<br>
<br><tt><font size=2>Is it a hostname issue?<br>
<br>
What is the hostname on both machines with and without the wired connection?<br>
<br>
What does hydra expect to use?<br>
<br>
Scott<br>
<br>
On Jan 29, 2013, at 11:24 AM, Jayesh Krishna <jayesh@mcs.anl.gov>
wrote:<br>
<br>
> Hi,<br>
> 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.<br>
> How are you running your program (The complete mpiexec command and
the output. Please copy-paste it from the command window)?<br>
> <br>
> Regards,<br>
> Jayesh <br>
> <br>
> ----- Original Message -----<br>
> From: "Qiguo Jing" <QJing@TrinityConsultants.com><br>
> To: mpich-discuss@mcs.anl.gov<br>
> Sent: Friday, January 25, 2013 5:16:58 PM<br>
> Subject: [mpich-discuss] Weird thing -- MPICH2 on domain<br>
> <br>
> <br>
> All, <br>
> <br>
> I have been encountering a weird thing, which draw me crazy. I hope
someone here can help me. <br>
> <br>
> 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. <br>
> <br>
> 1. If I connect the internet cable on laptop. --> Program works.
Results are good. <br>
> 2. If I disconnect the internet cable on laptop. --> Program fails,
saying Program Exception - access violation <br>
> 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. <br>
> 4. If I disconnect the internet cable on Desktop. -> Program works.
Results are good. <br>
> <br>
> <br>
> Can someone help? <br>
> <br>
> <br>
> Thanks. <br>
> _________________________________________________________________________<br>
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