[mpich-discuss] some questions about MPI

[Jayesh Krishna]

Hi,

>> ...MPI uses the debugging option "MPI Cluster Debugger", while MFC, probably, uses another...
 I am not sure if this is your issue. Look into the dependency libs and the include directories etc.

>> "unable to connect to otherNode"...
 Try specifying the ip addresses instead of hostname. Is this a new cluster (If so, check with your sysadmin to debug your setup)?

Regards,
Jayesh

----- Original Message -----
From: "toufik hadjazi" <h_toufik7 at hotmail.fr>
To: jayesh at mcs.anl.gov, mpich-discuss at mcs.anl.gov
Sent: Thursday, July 26, 2012 10:38:05 AM
Subject: Re: [mpich-discuss] some questions about MPI


Hi Jayesh, 

thanks for your reply. 

> >> 1/ I wanted to configure a MFC project ... 
> It would be difficult to guess the source of your problem. One thing I can recommend is performing a diff on the VS proj files. 
I think the problem is MPI uses the debugging option "MPI Cluster Debugger", while MFC, probably, uses another. 



> >> 2/ Since MPI_Publish_Name doesn't work across applications... 
> You can manually write the port name to a file (and read it from other MPI processes). 
> Are you referring to MPICH_PORT_RANGE? MPICH_PORT_RANGE specifies the range of ports to be used by the MPICH library (Try specifying a bigger range, say with 10 port numbers). 
I am developping a multi client/ multi server application, so saving the port name of each server and client into a file is gonna need a lot of synchronization, that's why i thought that maybe it's gonna be easier if the port was predetermined. 

> >> 3/ I have to launch my application in a remote node... 
> Do you have the same username (with the same password) on all the machines/nodes? MPICH uses the same registered username/password to launch processes on all the nodes. 
Yes, I have the same username/password on all nodes, and i tried also to run the application as an administrator. 

Regards, 
Toufik. 
> Date: Thu, 26 Jul 2012 09:57:54 -0500 
> From: jayesh at mcs.anl.gov 
> To: mpich-discuss at mcs.anl.gov 
> CC: h_toufik7 at hotmail.fr 
> Subject: Re: [mpich-discuss] some questions about MPI 
> 
> Hi, 
> 
> >> 1/ I wanted to configure a MFC project ... 
> It would be difficult to guess the source of your problem. One thing I can recommend is performing a diff on the VS proj files. 
> 
> >> 2/ Since MPI_Publish_Name doesn't work across applications... 
> You can manually write the port name to a file (and read it from other MPI processes). 
> Are you referring to MPICH_PORT_RANGE? MPICH_PORT_RANGE specifies the range of ports to be used by the MPICH library (Try specifying a bigger range, say with 10 port numbers). 
> 
> >> 3/ I have to launch my application in a remote node... 
> Do you have the same username (with the same password) on all the machines/nodes? MPICH uses the same registered username/password to launch processes on all the nodes. 
> 
> Regards, 
> Jayesh 
> 
> ----- Original Message ----- 
> From: "toufik hadjazi" <h_toufik7 at hotmail.fr> 
> To: mpich-discuss at mcs.anl.gov 
> Sent: Wednesday, July 25, 2012 11:22:41 AM 
> Subject: [mpich-discuss] some questions about MPI 
> 
> 
> 
> Hi, 
> 
> I am working on windows 7 using mpich2-1.4.1-p1. during that, I encountered some problems, which are: 
> 
> 1/ I wanted to configure a MFC project with MPI using the usual configuration but during the compilation some errors appeared like:"'CDialogEx' : base class undefined 
> c:\users\toufik\documents\visual studio 2010\projects\mfcapp\mfcapp\mfcappdlg.h" which didn't appear before the configuration. I don't know if there is some extra 
> options to adjust or it follows another method of configuration. 
> 
> 2/ Since MPI_Publish_Name doesn't work across applications, I want that MPI_Open_port opens a predetermined port (not some random port), when I digged a little, I found 
> that there is an environment variable MPI_PORT_RANGE whom could do it, when i tried it (mpiexec -env MPI_PORT_RANGE 1000..1000), nothing happened. 
> 
> 3/ I have to launch my application in a remote node but that didn't work giving me the error message: "unable to connect to otherNode". what could be the problem, 
> knowing that, all firewalls are off and all nodes have the same version of windows 7 and of mpich2. 
> 
> so, could anyone give some tips to help me with these questions? and thanks. 
> Toufik. 
> 
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