Re: [Valgrind-users] Callgrind

[Brian B. <bri...@gm...>]

You can build openmpi to have better valgrind support.  See the openmpi
docs for details.
On Jul 23, 2014 4:59 AM, "Olaf Lenz" <ol...@ic...> wrote:

> Hi!
>
> It looks as though I'm homing in on the culprit.
> The problem seems to be that the program is MPI-enabled. When disabling
> MPI in ESPResSo, valgrind works fine.
> It should be noted that OpenMPI provides its own compiler wrapper (mpic++)
> around g++ and does some heavy meddling with the internals. I assume that
> this somehow causes valgrind not to be able to use the symbol table. I am
> still looking into it.
>
> Olaf
>
>
> 2014-07-22 23:15 GMT+02:00 Philippe Waroquiers <
> phi...@sk...>:
>
>> On Tue, 2014-07-22 at 15:20 +0200, Olaf Lenz wrote:
>> > I'm using OpenSUSE 12.3, 64bit.
>> > I have used current valgrind and also the SVN version, but to no
>> > avail.
>> > "nm" tells me that the debuginfo is in the binary, but valgrind won't
>> > find it.
>> >
>> >
>> > I did use valgrind to profile other binaries on the same machine,
>> > built with the same compiler, and it worked fine. Could that be
>> > something in the build system of our software? Or am I safe to say
>> > that when nm finds the info, valgrind should, too?
>> What you could do is to take a binary which is ok,
>> and the binary that is not ok.
>>
>> Then for both, you run valgrind, increasing the level of
>> tracing/debugging, until you see a difference which could explain
>> what is going wrong with espresso.
>>
>> You could first try with -v
>> and then succesfully add more -v and more -d (up to 3 each).
>> After that, even more heavyweight tracing can be enabled by adding
>> one or more of :
>> --debug-dump=syms
>> --debug-dump=line
>> --debug-dump=frames
>> --trace-symtab=yes
>>
>> Philippe
>>
>>
>>
>>
>
>
> --
> Dr. rer. nat. Olaf Lenz
> Institut für Computerphysik, Allmandring 3, D-70569 Stuttgart
> Phone: +49-711-685-63607
>
>
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