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Re: [Getfem-users] GMM++ and Visual Studio 2008


From: Cédric Venet
Subject: Re: [Getfem-users] GMM++ and Visual Studio 2008
Date: Sat, 09 Oct 2010 16:34:38 +0200
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; fr; rv:1.9.2.9) Gecko/20100915 Lightning/1.0b2 Thunderbird/3.1.4

WOW! I really hope that this will fix the problem. I will check it tomorrow, but can you please let me know what does this flag do?

check on the internet, its a well known gotcha which has been fixed in VS2010. basically, it disable some iterator checking which is strangely active even in release mode.



Another question! Do I have to add the line

#define _SCL_SECURE 0

to all my header and code sources even source of GMM++ or just on my own source files or even on file is enough?

easiest way is to add  /D"_SCL_SECURE=0" (or the like) to your command line when compiling your code *and* gmm (if its not header only?)
or add it first in all the C++ files.


What about those pragmas you mentioned?

check msdn. if needed add, they must be defined before including the gmn headers.




Thanks



On 2010-10-08 10:09, Cédric Venet wrote:
hi,

try to define _SCL_SECURE=0 (warning ABI incompatible so all the code you link must use this flag)
for code using the stl heavily, it can result in 100x speedup.

perhaps also:

#pragma inline_recursion
#pragma inline_depth

and check all the optimisation are on.

regards
Cédric


On 07/10/2010 23:23, Danesh Daroui wrote:
>







>







> Hi,







>







> I have recently ported our code written with GMM++ to
64-bit



system







> and recompiled the code in Visual Studio 2008. The weird



thing is







> that when I run the code, GMM++ function compiled with
Visual



Studio







> 2008 has extremely poor performance comparing to the old



32-bit code







> compiled with MingW on Windows. I also compiled the code
with



Intel







> C++ Compiler 11.1 in Visual Studio 2008, and the
performance



of







> GMM++ functions were still very very low and they worked
very



slow.







> What is the reason? I thought, maybe the GMM++ code is
suited



to be







> compiled with gcc, but in the web site it is stated that
the



code is







> compatible with Intel C++ Compiler 8.0. Has anybody had
same







> experience?







>







> Thanks,







>







> D.







>







>







> _______________________________________________
Getfem-users



mailing







> list address@hidden



https://mail.gna.org/listinfo/getfem-users







>





-- 
Danesh Daroui
Ph.D Student
Lulea University of Technology
http://www.ltu.se

address@hidden
Tel: +46-(0)920-492451
Cell phone: +46-(0)704-399847


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