[Gmsh] Large postprocessing file

[Christophe Geuzaine]

Hi Jozsef - The next version will actually have much (really, much) 
improved post-pro interfaces. In particular, we'll support optimal 
storage of continuous datasets (e.g. associated with mesh vertices), 
which will tremendously reduce the file/dataset footprint in many cases.

Hopefully the 2Gb file size limit you got when compiling in 32bits will 
then be harder to reach ;-)

Ch.



Jozsef Bakosi wrote:
> Hi,
> 
> I think I have found the problem. It seems to be a 32-bit/64-bit issue.
> I recompiled gmsh from source on a 64bit environment and that one
> started loading the large file. (The files were also saved by that same
> machine.)
> 
> All the machines that have failed to load the big file I believe were
> Core 2 duo and Xeon 64bit systems. The one that didn't is Pentium 4
> therefore 32 bit.
> 
> The gmsh binary versions I was running everywhere were 32 bit executables.
> Now I compiled a 64 bit executable and it seems fine. May that mean that
> I found a bug?
> 
> Jozsef
> 
> On Thu, Apr 03, 2008 at 10:30:53AM -0400, Jozsef Bakosi wrote:
>> Hello,
>>
>> I'm trying to load the following files:
>>
>> http://camp.gmu.edu/jbakosi/pub/20.pos
>> http://camp.gmu.edu/jbakosi/pub/1_smallwindow.pos
>>
>> Both load fine on a machine with 1GB RAM but I'm having a problem
>> loading the second one on other computers with more memory. Gmsh doesn't
>> even start loading it. I doubt it's a problem of memory, because the
>> large file loads fine on a machine with small RAM (starts swapping),
>> while the large one doesn't even start on a machine with 16G. No error
>> message, no crash, just nothing.
>>
>> I also looked at ulimit, with no luck. Also the systems I'm trying with
>> are: Debian (loads fine), Suse, Fedora (fails).
>>
>> Is there any other limitation I'm missing?
>>
>> I'm trying to load an even bigger file if this works, like 15G.
>>
>> Please let me know if you need more information and cc me because I'm
>> not currently subscribed.
>>
>> Thanks,
>> Jozsef
> 
> 
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine