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Re: [ptp-user] parallel application run failure 
Brett
The 'unknown process' log messages indicate we are losing the output being 
sent to the console. I've seen this before and thought I fixed this. 
Apparently not, so I will look at it today.
Dave



From:
Brett Bode <bbode@xxxxxxxxxxxxx>
To:
PTP User list <ptp-user@xxxxxxxxxxx>
Date:
08/12/2009 11:25 AM
Subject:
Re: [ptp-user] parallel application run failure
Sent by:
ptp-user-bounces@xxxxxxxxxxx




On Aug 11, 2009, at 5:52 PM, Dave Wootton wrote:

>
> Brett
> I have a small MPI program, two tasks, I ran that outputs a single 
> line of text, about 100 bytes long to stdout. If the program runs 
> for a few seconds, then I see the output appear in the console view, 
> assuming I have checked the  'Display combined output in a console 
> view'.
>
> A few questions for you
>
> Is your program writing to stdout using stdio functions (printf, 
> etc) or writing to file descriptor 1 using write() system calls, 
> assuming C/C++ code. If it's Fortran code are you using write/print 
> statements?
I wrote a simple test case this morning that exhibits the same issue:

#include <stdio.h>

int main(void) {
                 printf("Simple IO test to see if this appears on the 
Eclipse console 
\n");
                 sleep(10);
                 printf("Bye bye!\n");
}

>
> With the PTP runtime jobs view open, normal behavior should be 
> seeing is that a blue job icon briefly appears in the left hand pane 
> of teh jobs view. After a couple seconds, it should turn into a 
> green triangle and green diamond icons appear in the right hand pane 
> of the jobs view, 1 per task. When the job completes, the job icon 
> and the diamond icons should turn red. Are you seeing this sequence 
> or something else?
>
I see the blue icon change to a green triangle, but there are no 
diamonds (green or otherwise) in the jobs view.

> Once the job completes, if you double click on the leftmost red 
> diamond icon, which represents task 0, a 'Process details' window 
> should appear in the editor pane of the perspective, with the job 
> output appearing there. You should also be able to do this when the 
> icon is green and watch stdout in real time. Do you see anything 
> there?
Still no diamonds??
>
> If you open the error log view, do you see any errors (red icons) 
> logged related to the run?
I am seeing some rather non-descript errors. They seem to appear one 
per process when the run starts and again when it ends. The errors 
simply say "ProcessChange: unknown process 8" and an exception trace 
is not available.
> Does it appear that the program is otherwise running to completion 
> (other data files it writes other than stdout/stderr get created 
> correctly)?
My previous test appeared to, but I don't think this one is staying 
running 10 seconds so I would say no. The infinite loop test stayed 
running until I told it to stop.
>
> I'm seeing the output almost immediately after I start the program. 
> If you change your test program so that it runs for something like 
> 10 seconds instead of running quickly, or an infinite loop, does 
> that affect the output?
> Dave
>
>
>
> Re: [ptp-user] parallel application run failure
>
> Brett Bode
> to:
> PTP User list
> 08/11/2009 03:09 PM
>
> Sent by:
> ptp-user-bounces@xxxxxxxxxxx
>
> Please respond to PTP User list
>
>
>
>
>
>
> It can be a short running job, but I have modified it to go into an
> infinite loop as well. When it's setup as a short running task the
> second console window does not open at all. The traceback shows up for
> both cases. In any event I would hope that I would be able to see the
> output of even something as trivial as hostname.
>
> Brett
> On Aug 11, 2009, at 2:05 PM, Greg Watson wrote:
>
> > Brett,
> >
> > Is this a short running job (e.g. hello world)? If so, it's possible
> > the program is exiting before any output can be displayed. You could
> > test this by adding a sleep(1) at the end of the program.
> >
> > Greg
> >
> > On Aug 11, 2009, at 2:32 PM, Brett Bode wrote:
> >
> >> Hello all,
> >>  I am having a problem where I am attempting to run a simple MPI
> >> application remotely on an AIX 6.1 system utilizing the PE RM proxy
> >> (this is with the 8/5 PTP 3.0 build and corresponding RDT server,
> >> etc). It appears that the application launches and runs
> >> successfully, but I do not receive any output back to the console
> >> in eclipse. I have tried several things including specifying a file
> >> for the output and error (that does appear to work), but have had
> >> no luck getting output back to the eclipse console.
> >>
> >> If I set the app up to go into a loop I see a console list the
> >> build results (that works fine) and then a new console opens up but
> >> remains empty. If I set the app up to run (quickly) to termination
> >> the 2nd console doesn't open at all. The only clue I see is a
> >> traceback on the server side in the window running the RDT server
> >> process:
> >>
> >>                   java.io.IOException: Pipe closed
> >>      at java.io.PipedInputStream.read(PipedInputStream.java:263)
> >>      at
> >> com.ibm.jvm.io.ProcessInputStream.read(ProcessInputStream.java:92)
> >>      at java.io.FilterInputStream.read(FilterInputStream.java:89)
> >>      at
> >> org
> >> .eclipse
> >> .rse
> >> .internal
> >> .dstore
> >> .universal
> >> .miners.command.OutputHandler.readLines(OutputHandler.java:168)
> >>      at
> >> org
> >> .eclipse
> >> .rse
> >> .internal
> >> .dstore
> >> .universal.miners.command.OutputHandler.handle(OutputHandler.java: 
> 91)
> >>      at org.eclipse.dstore.core.model.Handler.finish(Handler.java:
> >> 102)
> >>      at
> >> org
> >> .eclipse
> >> .rse
> >> .internal
> >> .dstore
> >> .universal.miners.command.OutputHandler.handle(OutputHandler.java:
> >> 110)
> >>      at org.eclipse.dstore.core.model.Handler.run(Handler.java:135)
> >>
> >> I do have the "Display combined output in console view" box
> >> checked, though I have also tried it without it checked.
> >>
> >> Brett
> >>
> >>
> >> _______________________________________________
> >> ptp-user mailing list
> >> ptp-user@xxxxxxxxxxx
> >> https://dev.eclipse.org/mailman/listinfo/ptp-user
> >
> > _______________________________________________
> > ptp-user mailing list
> > ptp-user@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/ptp-user
> >
>
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