[mpich-discuss] Getting started in Win XP

[Charles Lawson]

To: Jayesh (mpich-discuss)

My two PC's are both 32 bit. I found that the firewall was ON on both PC's.
I turned the firewall OFF on both PC's and the run worked just fine. I did
not need to use IP numbers.

Thanks much for getting me to this point.

Is there a setting of the firewalls I can make that is not as drastic as
turning them off completely?  Is there a program name or port I can list as
an "exception" in the firewall control window?

-- Chuck
======
On Thu, Apr 22, 2010 at 8:01 AM, <jayesh at mcs.anl.gov> wrote:

> Hi,
>
> # Do the two machines have the same architecture (are they both 32-bit
> machines) ?
>
> # Does "mpiexec -hosts 2 Issac 1 Gauss 1 hostname" work (It should just
> print the hostnames of the two machines)?
>
> # Does "mpiexec -n 2 fpi.exe" work on both machines ?
>
> # Do you have any firewall running on the machines ? If so, please try
> again after turning off the firewall.
>
> # Also try specifying the ipaddresses of the machines instead of hostnames
> (mpiexec -hosts 2 IPADDRESS_OF_ISSAC 1 IPADDRESS_OF_GAUSS 1 fpi.exe). You
> can get the ipaddress by typing "ipconfig" at the command prompt.
>
>  Let us know the results.
>
> Regards,
> Jayesh
> ----- Original Message -----
> From: "Charles Lawson" <chucksolve at gmail.com>
> To: "MPICH Discussion" <Mpich-discuss at mcs.anl.gov>
> Cc: EvansBW at gmail.com
>  Sent: Wednesday, April 21, 2010 9:26:51 PM GMT -06:00 US/Canada Central
> Subject: [mpich-discuss] Getting started in Win XP
>
>
>
> I downloaded MPICH2 for Windows in Nov, 2009. I installed in on two PC's
> that I call Issac and Gauss that have access to my home wireless network.
> The installation file is mpich2-1.2-win-ia32.msi. Issac uses XP-Pro and
> Gauss uses XP-Home.
>
> I purchased the Intel Fortran compiler, Vers 11.1, in July, 2009, for use
> on Issac, and I regularly use it there. I compiled the test case, fpi.f, on
> Issac. I (eventually) got a successful execution on a single PC by using the
> statement:
>
> mpiexec -hosts 1 Issac 1 fpi.exe
>
> I issued this command in a directory that contained mpiexec.exe and
> fpi.exe. I am the only user of this PC, and I do not use a password -- maybe
> I should say I have a blank password. Anyway the above command line didn't
> work initially because it asked for a password, and I didn't have one. I
> then set up a second User Name and gave it a password. Working under that
> User Name I again issued the above command line and I gave it the password
> when it asked for it, and it worked!! I was happy.
>
> Moving on to try running this on my two PC's, I tried the command line:
>
> mpiexec -hosts 2 Issac 1 Gauss 1 fpi.exe
>
> I had Gauss running with a User Name that has a password (which may or may
> not have any bearing on the situation.)
>
> This failed with the message:
>
> launch failed: CreateProcess(fpi.exe) on 'Gauss' failed, error 2 - The
> system cannot find the file specified.
>
> Then I tried giving fpi.exe a full path. I used:
>
> mpiexec -hosts 2 Issac 1 Gauss 1 \\Issac\mpi\fpi.exe
>
> That got further, but still not a complete execution. This responded with:
> Process 0 of 2 is alive
> Enter the number of intervals: (0 quits)
> Process 1 of 2 is alive
>
> I entered 50, but there was no response. I entered 0 and still no response,
> so I killed the run.
>
> I added four Fortran write statements into the test case, fpi.f. Before and
> after the Call MPI_BCAST and before and after the Call MPI_REDUCE. Each
> write included the value of myid in the output. I recompiled that. I then
> tried the last command line above again. It responded with:
>
> Process 0 of 2 is alive
> Enter the number of intervals: (0 quits)
> Process 1 of 2 is alive
> Proc 1 before call MPI_BCAST <= My debug write.
> 50 <= My entry from the keyboard.
> Proc 0 before call MPI_BCAST <= My debug write.
>
> and then just hung at that stage.
>
> I conclude that fpi.exe is executing on both PC's, and on both PC's it has
> successfully gotten through calls to MPI_INIT, MPI_COMM_RANK and
> MPI_COMM_SIZE. The "print ... alive" statement functioned correctly on both
> PC's. Execution continued correctly up to the Call to MPI_BCAST. There it
> died. Why?
>
> I will greatly apprciate suggestions as to how to get this test case to run
> correctly. I am well acquainted with Fortran programming, but not well
> acquainted with lower level operating system or networking components.
>
> Hoping for help,
>
> Chuck
> =====
>
>
>
>
>
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