Re: [PerfSuite-users] Problems running examples

[Rick K. <rk...@nc...>]

Abdullah -

Please try to use the SourceForge mailing list for questions/comments 
about PerfSuite.  That allows traffic to be archived that may benefit 
other people who have similar questions by browsing earlier postings.  
It also helps me keep my NCSA (work) email distinct, which in turn keeps 
my employer happy :)

As far as your question goes: much is dependent on the particular MPI 
implementation and how it manages processes/tasks.  For example, MPICH 
using the p4 device won't work with psrun at all (this was discussed in 
a perfsuite-users posting a long time ago).   You may have to experiment 
with your own favorite MPI.   Charm++ is another case that can work in 
some cases, others not.

The driver for the processor's performance monitoring unit (perfmon or 
perfctr for Linux) takes care of virtualizing the hardware counter data 
on a per-thread basis, so if your application spawns separate processes 
that use multiple cores, they should each generate an output XML 
document.  For multithreaded applications that use POSIX threads (either 
directly or through a Pthread-based interface like many OpenMP 
implementations), the option "-p" that psrun accepts will trap thread 
creation and generate per-thread performance data at thread exit.

If you are instead looking for a system-wide monitoring tool that would 
track all cores over a given period of time, that is not what PerfSuite 
was intended to do, but there are other tools available that fill that 
space.

Rick

Abdullah Kayi wrote:
> Hi Rick,
>
> I am pretty much getting the reasonable outputs from the tests that I 
> tried. So now, I am trying to use "psrun" with mpirun I couldn't find 
> an example for that other then cpi-mpi which works with libpshwpc. So 
> I  am not sure what is needed for psrun to work for mpi or charm++ 
> directly. Also, how can I get theoutput from all the cores? Do you 
> have any ideas on these? Thanks so much for your help.
>
> Regards,
>
> Abdullah
>
> On Wed, Jun 25, 2008 at 5:39 PM, Abdullah Kayi <ap...@gm... 
> <mailto:ap...@gm...>> wrote:
>
>     Ooops my bad, I shouldn't have used "psrun", now I am getting the
>     correct results. I will let you know about the ChaNGa results.
>
>     On Wed, Jun 25, 2008 at 4:14 PM, Abdullah Kayi <ap...@gm...
>     <mailto:ap...@gm...>> wrote:
>
>         Hey Rick,
>
>         I am running the "hl" example like this;
>
>
>         psrun -c papi3_mflops.xml ./hl
>
>         I am finally getting the xml output  fine but when I look at
>         the results.
>
>         Index
>         Description                                                             
>         Counter Value
>         ============================================================================================
>             1 Floating point
>         operations........................................                   
>         3
>             2 Total
>         cycles.....................................................              
>         629519
>
>         Event Index
>         ============================================================================================
>             1: PAPI_FP_OPS         2: PAPI_TOT_CYC
>
>         There should be something wrong how come there were only 3 FP
>         operations in that output, I am using the "hl.c" as it is. Do
>         you have any ideas on this?
>
>         Regards,
>
>         Abdullah
>
>
>