[mpich2-dev] nesting level warning with MPI_File_preallocate(fh, 0)

[Lisandro Dalcin]

Well, my network is working fine again, so I could do svn update.
Running the code I've posted under valgrind gives the output below:
Clearly, no memory leak is reported, but the handle tracing code still
shows the warning.

$ valgrind a.out
==27547== Memcheck, a memory error detector.
==27547== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==27547== Using LibVEX rev 1804, a library for dynamic binary translation.
==27547== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==27547== Using valgrind-3.3.0, a dynamic binary instrumentation framework.
==27547== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==27547== For more details, rerun with: -v
==27547==
In direct memory block for handle type ATTRIBUTE KEY, 2 handles are
still allocated
==27547==
==27547== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 17 from 1)
==27547== malloc/free: in use at exit: 0 bytes in 0 blocks.
==27547== malloc/free: 155 allocs, 155 frees, 8,436,618 bytes allocated.
==27547== For counts of detected errors, rerun with: -v
==27547== All heap blocks were freed -- no leaks are possible.


On Tue, Dec 9, 2008 at 7:59 PM, Dave Goodell <goodell at mcs.anl.gov> wrote:
> On Dec 9, 2008, at 3:09 PM, Robert Latham wrote:
>
>> On Tue, Dec 09, 2008 at 03:02:48PM -0600, Rajeev Thakur wrote:
>>>
>>> I guess that's because you have built a version with memory tracing
>>> turned
>>> on.
>>
>>>> In direct memory block for handle type ATTRIBUTE KEY, 2 handles are
>>>> still allocated
>>
>> I wonder if this is fixed in svn?  I have an mpich with memory tracing
>> and neither the built-in tracing or valgrind complains about anything
>> leaks.
>
> This is actually output from the recently(-ish) added handle tracing code,
> not the memory tracing code.  You can enable handle tracing via
> --enable-g=handle or --enable-g=all.
>
> -Dave
>
>



-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
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