[Chimera-users] chimera performance
gregc at cgl.ucsf.edu
Thu May 7 11:44:34 PDT 2009
Looking at your chimera benchmark scores and at the scores on the web
page, http://socrates2.cgl.ucsf.edu/trac/chimera/wiki/benchmarks, it looks
like you don't have the NVidia graphics driver installed. And that would
make a *huge* difference. To double-check, run the glxinfo command and
look at the "OpenGL renderer string:" line, it should have NVIDIA in it
instead of Mesa. To get the NVidia drivers, go to
On Thu, 7 May 2009, Bala subramanian wrote:
> Dear Greg,
> You are right. Previously it was normal but now it is slow. I havent updated
> the kernel. I checked and noticed that i dnt have any memory intensive
> background jobs also.
> I did benchmarks with two chimera versions 1.3 (attached file chim_test) and
> chimera 1.4 (attached chim_test1).
> My graphics card is nVIDIA GETFORCE 9300MG, VRAM: 256 MB. I dnt know how to
> compare and judge what is going wrong. I wud appreciate your help on the
> So it was formerly fast on the same computer? This could happen on a Linux
>> computer if you updated the kernel and forgot to reinstall the graphics
>> driver (from ATI or NVidia, the open source 3D drivers still need work, but
>> are improving). Another possibility, on all operatings sytems, is that
>> there is a background process that is using a lot of CPU or memory, so
>> chimera doesn't have the resources it used to.
>> If you just want to check the graphics performance, then you can use the
>> Benchmark tool in Tool / Utilities to guage the current performance. And
>> then you can compare to the reported scores to see if your graphics
>> performance is reasonable (the Show button in the Benchmark tool brings up
>> the web page).
>> - Greg
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