Originally by "Ayer, Timothy C." <a href="mailto:timothy.ayer@pw.utc.com"

mpichbot commented on May 19, 2024

Originally by Ayer, Timothy C. on 2008-08-04 09:32:36 -0500

This message has 1 attachment(s)

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mpichbot commented on May 19, 2024

Originally by Ayer, Timothy C. on 2008-08-04 09:32:36 -0500

Attachment added: fpi.f (2.4 KiB)
Added by email2trac

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mpichbot commented on May 19, 2024

Originally by Jayesh Krishna on 2008-08-04 09:58:49 -0500

Hi,
If you are running your executable from a shared network drive you need
to map (see "--map" option of mpiexec in the window's developer's guide)
the network drive with mpiexec when launching your job.
Also make sure that you have turned the windows firewall (or any other
firewalls) off on the machines involved in the job.
Try specifying the ip addresses of the machines instead of the
hostnames.
Let us know the results.

(PS: Instead of the "-hosts" option you could try using the "-machinefile"
option available with mpiexec. See the window's developer's guide for
details.)

Regards,
Jayesh
-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of mpich2
Sent: Monday, August 04, 2008 9:33 AM
To: undisclosed-recipients:
Subject: [mpich2-maint] #36: MPICH2 fpi.exe hanging on Windows XP

-----------------------------------------------------------+------------
-----------------------------------------------------------+----
Reporter: "Ayer, Timothy C." [email protected] | Type:
bug
Status: new | Priority:
major
Component: mpich2 |
-----------------------------------------------------------+------------
-----------------------------------------------------------+----

I am testing MPICH2 MPICH2-1.0.7 Windows XP (sp2). I have installed it
on
2
hosts (hostA, hostB) and trying to run the fpi.exe built with
fmpich2.lib.
The code is hanging in a MPI_Bcast call. The fpi.exe source is attached.

The following tests work fine from hostA, both prompt for a number of
intervals, accept input, and produce and estimate of PI

mpiexec.exe -hosts 2 hostA hostA \hostA\temp\fpi.exe
<\hostA\temp\fpi.exe>

mpiexec.exe -hosts 2 hostB hostB \hostA\temp\fpi.exe
<\hostA\temp\fpi.exe>

The following test hangs when submitted from hostA (in MPI_Bcast). It
does prompt for input (number of intervals) but once entered it hangs. I
have launched the smpd process using smpd -d but see no output from the
smpd after I enter an interval value

mpiexec.exe -hosts 2 hostA hostB \hostA\temp\fpi.exe
<\hostA\temp\fpi.exe>

Any suggestions would be appreciated. Also let me know if you want me
to
send debug output.

Thanks,
Tim

Timothy C. Ayer
High Performance Technical Computing
United Technologies - Pratt & Whitney
[email protected]
(860) 565 - 5268 v
(860) 565 - 2668 f

<<fpi.f>>

Ticket URL: https://trac.mcs.anl.gov/projects/mpich2/ticket/36

from mpich.

mpichbot commented on May 19, 2024

Originally by Jayesh Krishna on 2008-08-04 09:58:49 -0500

Attachment added: part0001.html (4.1 KiB)
Added by email2trac

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mpichbot commented on May 19, 2024

Originally by Jayesh Krishna on 2008-08-04 13:01:41 -0500

Attachment added: part0001.2.html (10.6 KiB)
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mpichbot commented on May 19, 2024

Originally by Jayesh Krishna on 2008-08-04 13:01:41 -0500

You should try,

mpiexec.exe -map y:\hostA\temp -hosts 2 hostA hostB y:\fpi.exe
file://hosta/temp/fpi.exe

Let us know if it works for you.

(PS: The shared drive is accessible across machines because the drive is
accessible/mapped by the user logged on to the machines. SMPD runs as a
service logged on as "Local System" and does not - should not- have access
to drives shared by users)

Regards,
Jayesh

From: Ayer, Timothy C. [mailto:[email protected]]
Sent: Monday, August 04, 2008 12:50 PM
To: Jayesh Krishna
Subject: RE: [mpich2-maint] #36: MPICH2 fpi.exe hanging on Windows XP

The exe can be directly accessed from hostB by executing
\hostA\temp\fpi.exe, that is, you could type it directly into a command
prompt from hostB if you wanted. Note also that \temp directory is a
shared location. I am not sure physically how this is setup on our
network but this has worked with out any "mapping" for MPICH (MPICH1).

Note: I did try: mpiexec.exe -map y:\hostA\temp -hosts 2 hostA hostB
\hostA\temp\fpi.exe but that still hangs in the MPI_Bcast call.

The interesting part is that it gets through the initialization:

  call MPI_INIT( ierr )
  call MPI_COMM_RANK( MPI_COMM_WORLD, myid, ierr )
  call MPI_COMM_SIZE( MPI_COMM_WORLD, numprocs, ierr )

All execute.

Thanks,
Tim

From: Jayesh Krishna [mailto:[email protected]]
Sent: Monday, August 04, 2008 1:33 PM
To: 'Ayer, Timothy C.'
Subject: RE: [mpich2-maint] #36: MPICH2 fpi.exe hanging on Windows XP

How (what mechanism) does hostB access data (exe) in hostA ?

Regards,
Jayesh

From: Ayer, Timothy C. [mailto:[email protected]]
Sent: Monday, August 04, 2008 12:31 PM
To: Jayesh Krishna
Subject: RE: [mpich2-maint] #36: MPICH2 fpi.exe hanging on Windows XP

Thanks Jayesh for the quick reply. This is a network availabe UNC path -
why do I need to map a drive?

I am familiar with the machines file - I was just using the command line
for debugging.

From: Jayesh Krishna [mailto:[email protected]]
Sent: Monday, August 04, 2008 10:56 AM
To: [email protected]
Cc: [email protected]
Subject: RE: [mpich2-maint] #36: MPICH2 fpi.exe hanging on Windows XP