[mpich-discuss] Error while connecting to host

[Jayesh Krishna]

Hi,
 It looks like the process manager was not installed correctly.
 Uninstall your current version of MPICH2 and install MPICH2 following the steps in Section 9.4 (not 9.1) of the MPICH2 installer's guide (available at http://www.mcs.anl.gov/research/projects/mpich2/documentation/index.php?s=docs).

Regards,
Jayesh

----- Original Message -----
From: "Kai Zhong" <jqxx2006 at 126.com>
To: mpich-discuss at mcs.anl.gov
Sent: Sunday, June 12, 2011 4:17:45 AM
Subject: [mpich-discuss] Error while connecting to host




Hi, 


I have an computer with Core i5 CPU and 4 GB of RAM, running the MS win7 64-bit operating system. I am trying to run 'cpi.exe' in the folder 'examples' after I install 'mpich2-1.3.2p1-win-x86-64.exe'. If I just type 'cpi' in the cmd, the program run normally. And at 'Windows Task Manager',I see only one of four CPUs are occupied fully. Then I type 'mpiexec -n 2 cpi', 'mpiexec.exe -n 1 -noprompt cpi.exe' and so on. it comes out the same error message: 

Error while connecting to host. No connection could be made because the target machine actively refused it. (10061) 
Connect on sock (host=Owner-PC, port=8676) failed, exhaused all end points 
Unable to connect to 'Owner-PC:8676', sock error: Error = -1 

I am the administrator on this computer, and I am not trying to connect to another machine, to my knowledge. Besides, the firewall is disabled. 
I think maybe I mixed MSMPI and MPICH2, but I don't find the folder 'Microsoft Compute Cluster Packany', which I think the MSMPI should be, at "C:\Program Files" or "C:\Program Files(*86)". 
So, what am I doing wrong? 

Any help to solve this error is highly appreciated. 


Best regards, 

Kai 





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