[Chimera-users] chimera performance

Bala subramanian bala.biophysics at gmail.com
Thu May 7 23:38:47 PDT 2009

Dear Greg,
Thank you for the information. Copied below a part of the glxinfo command
and OPENGL renderer string is given as Software Rasterizer.

[cbala at ramana ~]$ glxinfo
name of display: :0.0
display: :0  screen: 0
direct rendering: No (If you want to find out why, try setting
server glx vendor string: SGI
server glx version string: 1.2
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap,
    GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe,
    GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, GLX_MESA_copy_sub_buffer
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
client glx extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info,
    GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync,
    GLX_NV_swap_group, GLX_NV_video_out, GLX_SGIX_fbconfig,
    GLX_SGI_swap_control, GLX_ARB_create_context, GLX_NV_float_buffer,
    GLX_ARB_fbconfig_float, GLX_EXT_fbconfig_packed_float,
    GLX_EXT_texture_from_pixmap, GLX_EXT_framebuffer_sRGB,
    GLX_NV_present_video, GLX_NV_multisample_coverage
GLX version: 1.2
GLX extensions:
    GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_SGIX_fbconfig,
OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
OpenGL version string: 1.4 (2.1 Mesa 7.3-devel)


On Thu, May 7, 2009 at 8:44 PM, Greg Couch <gregc at cgl.ucsf.edu> wrote:

> 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 <
> http://www.nvidia.com/Download/index.aspx>.
>         - Greg
> 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
>> same.
>> Thanks,
>> Bala
>> 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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