[Dune] [Fwd: Re: Memory leak, valgrind check, Dune]

[Oliver Sander]

This was intended to go to the list as well.

-------- Original-Nachricht --------
Betreff: 	Re: [Dune] Memory leak, valgrind check, Dune
Datum: 	Thu, 08 Oct 2009 14:18:38 +0200
Von: 	Oliver Sander <sander at mi.fu-berlin.de>
An: 	Martin Nolte <nolte at mathematik.uni-freiburg.de>
Referenzen: 	<0C9CAFE8C4E5CA49884E636AE1D7CD690358D849 at MAILBOX0B.psi.ch> 
<4ACDCE2A.6070109 at mi.fu-berlin.de> 
<4ACDD580.9060800 at mathematik.uni-freiburg.de>



Hi Martin!
Thanks, but could you please be a bit more concrete?  Do the two classes
really both
- implement pool allocator functionality
- implement the std::allocator interface
- are equally efficient?

If yes, why do we have both?  I am not convinced that the PoolAllocator 
really
works, either (see FS 493).  I'd rather not waste more time on debugging it
if it can be replaced by SmallObjectPool.

Oliver


Martin Nolte schrieb:
> Hi Oliver,
>
> to my knowledge the outcome was simple: If somebody is able to build the 
> memory allocation of SmallObject using the PoolAllocator, he may feel free to 
> do so.
>
> Just a word of warning: The Mappings of the GenericGeometry are SmallObjects. 
> Any errors in the memory allocation will have effects in dune-grid (at least 
> in the reference element). And I'm still not convinced that the PoolAllocator 
> really works...
>
> Martin
>
> Oliver Sander wrote:
>   
>> BTW: I faintly remember a discussion about the respective benefits of 
>> PoolAllocator and
>> SmallObjectPool.  What was the outcome? Is there a good reason to 
>> have/debug both?
>>
>> --
>> Oliver
>>
>> Oswald Benedikt schrieb:
>>     
>>> Hi Dune, I just sent a mail concerning all the details of our memory leak problem to the
>>> mailing list but it appears to be stuck somewher waiting for 'Moderator Approval' ?
>>>
>>> In particular, I sent the complete valgrind outputs for both Mac OS X and Linux.
>>>
>>> Have a revolutionary day, Benedikt
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------------------------------------------
>>> Benedikt Oswald, Dr. sc. techn., dipl. El. Ing. ETH, www.psi.ch, Computational Accelerator Scientist
>>> Paul Scherrer  Institute (PSI), CH-5232 Villigen, Suisse, benedikt.oswald at psi.ch, +41(0)56 310 32 12
>>> "Passion is required for any great work, and for the Revolution passion and audacity are required in big doses.", 
>>> Ernesto 'Che' Guevara, Letter to his parents.
>>> http://maxwell.psi.ch/amaswiki/index.php/User:BenediktOswald 
>>> ------------------------------------------------------------------------------------------------------------------
>>>
>>>
>>>
>>> _______________________________________________
>>> Dune mailing list
>>> Dune at dune-project.org
>>> http://lists.dune-project.org/mailman/listinfo/dune
>>>   
>>>       
>>     
>
>   


-- 
************************************************************************
* Oliver Sander                ** email: sander at mi.fu-berlin.de        *
* Freie Universität Berlin     ** phone: + 49 (30) 838 75348           *
* Institut für Mathematik      ** URL  : page.mi.fu-berlin.de/~sander  *
* Arnimallee 6                 ** -------------------------------------*
* 14195 Berlin, Germany        ** Member of MATHEON (www.matheon.de)   *
************************************************************************




-- 
************************************************************************
* Oliver Sander                ** email: sander at mi.fu-berlin.de        *
* Freie Universität Berlin     ** phone: + 49 (30) 838 75348           *
* Institut für Mathematik      ** URL  : page.mi.fu-berlin.de/~sander  *
* Arnimallee 6                 ** -------------------------------------*
* 14195 Berlin, Germany        ** Member of MATHEON (www.matheon.de)   *
************************************************************************