[Chimera-users] odd chimera benchmark performance

Tom Goddard goddard at sonic.net
Thu Aug 13 16:59:52 PDT 2015


You probably don’t have the Nvidia graphics driver installed, so you are getting slow Mesa rendering.  To check this use Chimera menu Help / Report a Bug… and look in the “Gathered Information” box where it will identify the OpenGL renderer.  For instance on my Mac it says:

OpenGL Vendor: NVIDIA Corporation
OpenGL Renderer: NVIDIA GeForce GTX 680MX OpenGL Engine
OpenGL Version: 2.1 NVIDIA-10.4.2 310.41.35f01

  Tom


> On Aug 12, 2015, at 11:53 PM, Dan Lin wrote:
> 
> Hello:
> 
> I was wondering if anyone had any experience tracking down performance problems in chimera.
> 
> I've noticed that I am getting really sluggish performance when managing a lot of atoms, even when everything is shown as backbone traces only.
> 
> To take a look at the performance, I ran the benchmark and got the following numbers:
> 
> Volume benchmark scores
>  surface    mesh  contour  solid  recolor
>      981    1291     280     589     393
> 
> Null	Wire	Stick	BStick	Ribbon	Sphere	Ops
> 6249.5	158.7	1.5	0.9	27.4	0.4	89.3
> 
> 
> compared to a benchmark posted on the website of the same graphics card:
> 
> 2125 2026 302 512 491
> 
> 213 492 452 3259 169 128
> 
> Apparently I'm getting awful benchmarks for most of the molecule benchmarks, while the volume performance is pretty comparable. I re-ran the molecule benchmarks to make sure they were reproducible and got pretty much the same numbers.
> 
> Would anybody have any suggestions for figuring out what's going on?
> 
> For reference, I'm running ubuntu 12.04 with up to date nvidia drivers for a GTX 560 Ti.
> 
> Thanks,
> Dan
> 
> 
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