[Chimera-users] Chimera slow on Win 7 64-bit system

Greg Couch gregc at cgl.ucsf.edu
Fri Oct 16 09:59:17 PDT 2009

To follow up, Windows Vista significantly changed the graphics driver 
architecture from Windows XP, and consequently, the graphics drivers have 
only recently caught up in performance and stability.  So if you are 
running Vista, please update your graphics driver.  This is been 
especially necessary for computers with Intel graphics, but ATI and NVidia 
graphics setups will benefit too.

 	- Greg

On Thu, 15 Oct 2009, Thomas Goddard wrote:

> Hi Wen,
>  The slow ribbon and atom rendering must be a graphics driver issue. 
> Surfaces use different OpenGL calls for rendering allowing them to be fast. 
> You can try updating your graphics driver.  If you have the most recent you 
> could try poking around with graphics driver settings that trade of speed and 
> quality.
>  We don't have a 64-bit Windows Chimera.  Only 64-bit Linux Chimera is 
> available.  We'll probably put out a 64-bit Mac Chimera in about 6 months and 
> 64-bit Windows Chimera in about 1 year.
> 	Tom
> -------- Original Message --------
> Subject: chimera question
> From: Wen Jiang
> To: Tom Goddard
> Date: 10/15/09 7:54 PM
>> Hi Tom.
>> I recently set up a Windows 7 64bit system for Nvision stereo display
>> and ran into some problems with Chimera. First, the performance for
>> pdb molecules (ribbon and atoms) is very slow. It seems fine with
>> volume data (surface). Do you have any clue?  Second, there is only
>> 32bit version for Chimera and it cannot deal with large map. Do you
>> have a 64bit version for Windows?
>> Thanks,
>> Wen
>> Wen Jiang, Ph.D.
>> Assistant Professor
>> Department of Biological Sciences
>> Lilly Hall, B-402A
>> Purdue University
>> West Lafayette, IN 47907
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