matlab 3d perfomance

English Hardware
1

Hi all,
I have a laptop with i7 and NVIDIA 425M. Performance with matlab was excellent,
when suddenly something changed in my system and i get really poor
results on 3D rendering.

I am using opensuse 11.3 64 bit and the bench results are
>> bench

ans =
0.0488 0.0364 0.1747 0.2607 0.3075 2.2172
>> opengl info

Version = 4.0.0 NVIDIA 256.53
Vendor = NVIDIA Corporation
Renderer = GeForce GT 425M/PCI/SSE2
MaxTextureSize = 16384
Visual = 0x27 (TrueColor, depth 24, RGB mask 0xff0000 0xff00
0x00ff)
Software = false

of Extensions = 133

Driver Bug Workarounds:
OpenGLBitmapZbufferBug = 0
OpenGLWobbleTesselatorBug = 0
OpenGLLineSmoothingBug = 0
OpenGLClippedImageBug = 1
OpenGLEraseModeBug = 0
What can be the problem?

2

marios geo wrote:
> suddenly something changed in my system and i get really poor
> results on 3D rendering.

what changed?
did you allow any updates or new software to be installed?
did you otherwise become root to perform any admin duties?
did you have an abnormal shutdown, crash or other unusual event?

what happens if you use YaST to add a new test user, then log out and
log back in as that new user…does the machine again as it did before
something changed?

–
DenverD
CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]
I feel annoyed that I can’t put my wide range of languages on stupid
Facebook. For example, I speak Sarcasm, fluently spoken and written,
and Various Forms of Geek…

3

Just to be sure, i re-installed opensuse, applied all patches-updates, and the some thing happens.

I can’t really remember when exactly was ok, but I think the latest kernel update did something. Besides that, I can’t use nvidia 260.19 drivers, so that’s why I stuck with 256.

4

marios geo wrote:
> i re-installed opensuse, applied all patches-updates, and the some
> thing happens.

yep, you probably should have not applied all patches and updates
because there absolutely ARE problems with some kernels and some
drivers and some applications…

you might check with the matlab gurus over at their forum…they may
be able to tell you the sweet spot of kernel/graphics/driver mix…

other wise you could always just go back a kernel update or two…of
course that might introduce a security concern…

oh, and don’t forget the chance to dig though the bugzilla database,
you might just find your symptom there–along with the fix!! or, maybe
you need to LOG your bug…and, maybe they can fix it!! see:
http://en.opensuse.org/Submitting_Bug_Reports

or, you might even consider digging though the internet with google:
http://www.google.com/search?q=matlab+3D+performance+linux+nvidia+425M
or so…

–
DenverD
CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]
I feel annoyed that I can’t put my wide range of languages on stupid
Facebook. For example, I speak Sarcasm, fluently spoken and written,
and Various Forms of Geek…

5

Did you try to disable 3d effects (ALT+SHIFT+F12)?

You may also consider reverting to the original kernel (the one from the DVD or OSS repo).

6

Did that. I tried with or without effects, under gnome and kde.

Also, i tried different versions of kernel (even the original one), but no luck.

There must be something with NVIDIA driver.

7

marios geo wrote:
> There must be something with NVIDIA driver.

openSUSE Graphic Card Practical Theory Guide for Users
http://tinyurl.com/2vsv4rh

–
DenverD
CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]
I feel annoyed that I can’t put my wide range of languages on stupid
Facebook. For example, I speak Sarcasm, fluently spoken and written,
and Various Forms of Geek…