On 07/12/2017 20:27, Paul Emsley wrote:
On 07/12/2017 16:19, Thomas Laughlin wrote:
I've been trying to build into an EM-density map using WinCoot and the
program keeps crashing when manipulating the model or density.
Using a .mrc seems to work fine, it is only when I use a .mtz that the
program crashes upon manipulating objects.
I'd prefer to use the .mtz for the ability to "on-the-fly"
filter/sharpen.
The computer I'm using has a dedicated nvidia quadro K2200, 64GB ram,
and a Xeon E5-2630 v4.
I was wondering is the size of the .mtz was overwhelming and if a
solution would be to somehow segment it into more manageable pieces.
I suspect that is what is happening. Yes, you can create map fragments
based around the origin. WinCoot is 32bit and runs out of memory (2GB
limit I think).
Well, it uses large-adress-aware so can go up to 4GB. Having said this,
this is not equal the size of the map and its still possibly your
problem (*). I have been able to load 1.3GB map files but have no
experience with large/EM mtz. Maybe you can provide it to me
(confidentially) and I can test/debug.
How can I check if the system resources are limiting WinCoot or if the
crashes are for some other reason.
What does coot say when it crashes? that will help in the diagnosis.
Certainly ;-)
Bernhard
(*) there will be a real 64 bit at some point...
--
***************************************************
Dr. Bernhard Lohkamp
Associate Professor/Docent
Div. Molecular Structural Biology
Dept. of Medical Biochemistry and Biophysics (MBB)
Karolinska Institutet
S-17177 Stockholm
Sweden
phone: (+46) 08-52487695
fax: (+46) 08-327626
email: [email protected]
