Charm++ parallel programming system

[Chee Wai Lee <cheewai1972 AT gmail.com>]

Hi Xoan,

        I do not believe anyone has attempted to use TAU profiling (via the 
Charm++-TAU measurement interface) on AMPI so far. I should be able to help 
you navigate through some of the issues and perhaps adapt the framework to 
enable what you desire if some functionality is missing.

        The way TAU interfaces with the Charm++ runtime to measure the 
performance of Charm++ events (on top of which AMPI is built) is through 
callback hooks provided by the runtime system. You will need to follow steps 
similar to the following:

        http://www.nic.uoregon.edu/tau-wiki/Guide:NAMDTAU

        The only requirements on the configuration and building of TAU is 
that it should match the Charm++ build as closely as possible (the 
architecture, the compilers and the use of any underlying MPI layers). In 
your case, the use of "-no-trace-mpi" is critical. As a default, TAU wraps 
MPI calls. In the case of attempting to measure AMPI performance, we do not 
want to do that (it is actually unclear which MPI layer gets wrapped in this 
case) but instead interpret the calls according to what the Charm++ runtime 
tells TAU.

        You may contact me via skype if you need any interactive assistance 
on the matter. What you are doing is new as far as I know and might require 
some work to get going correctly. Thanks!

Best Regards,
Chee Wai Lee
University of Oregon

On Apr 10, 2012, at 6:23 AM, Xoan Carlos Pardo Martinez wrote:

> Hi,
> 
> I´m interested in making some performance measurements using different MPI 
> implementations. I´m using TAU as profile tool and AMPI is one of the 
> implementations i´m interested in.
> 
> My question is about the right way to configure/compile TAU to use it with 
> AMPI. Before building the Tau target in CHARM, is it necessary to compile 
> and configure TAU to use the commands/headers/libraries in the AMPI 
> directory? If so, is it also necessary to specify the -charm building 
> option to use CHARM threads in TAU?
> 
> Thanks for your assistance
> 
> Best regards
> ----
> Xoan C. Pardo
> Computer Architecture Group
> University of A Coruña - Spain
> _______________________________________________
> charm mailing list
> charm AT cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/charm
> 
> _______________________________________________
> ppl mailing list
> ppl AT cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/ppl
>