Re: Nvidia driver issues (was: GSoC releases)

[bART Janssens-2]

On Sat, Apr 26, 2008 at 2:40 PM, Evan Lezar <evanlezar@...> wrote:

> Bart
>
>  Wrt the driver issues. When i install the nvidia drivers (various
>  versions) and restart x the screen stays blank. I have reinstalled
>  gutsy as well as hardy and tried various driver installation methods
>  including Envy.
>  >From the x logs it seems as if it cant load the nvidia driver, but
>  doesnt give much additional info. I want to try the card in a friends
>  system to se if it might be some other mysterious hardware conflicts.
>  Will keep you posted.

Does the card work on Win32? On Ubuntu, I had to uninstall all
packaged nvidia drivers, which switches xorg.conf back to the "nv"
driver. After installing from the nvidia installer, I changed it back
to nvidia. With this setup, I don't get any output from my videocard
until KDM has started.

Regards,

--
Bart

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[Evan Lezar]

Havent tried it in win32 yet, but will as soon as possible. I have
been using gdm as my desktop manager, but might try kdm if i cant get
it working soon.

I am however away from that pc till next weekend, so i will convert a
couple more of the plugins using emulation mode. We should also
discuss benchmarking etc so that we can properly analyse the
performance of the gpu implementations.

Thanks for the help so far.
Evan

On 4/27/08, Bart Janssens <bart.janssens@...> wrote:

> On Sat, Apr 26, 2008 at 2:40 PM, Evan Lezar <evanlezar@...> wrote:
> > Bart
> >
> >  Wrt the driver issues. When i install the nvidia drivers (various
> >  versions) and restart x the screen stays blank. I have reinstalled
> >  gutsy as well as hardy and tried various driver installation methods
> >  including Envy.
> >  >From the x logs it seems as if it cant load the nvidia driver, but
> >  doesnt give much additional info. I want to try the card in a friends
> >  system to se if it might be some other mysterious hardware conflicts.
> >  Will keep you posted.
>
> Does the card work on Win32? On Ubuntu, I had to uninstall all
> packaged nvidia drivers, which switches xorg.conf back to the "nv"
> driver. After installing from the nvidia installer, I changed it back
> to nvidia. With this setup, I don't get any output from my videocard
> until KDM has started.
>
> Regards,
>
> --
> Bart
>
> -------------------------------------------------------------------------
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[bART Janssens-2]

On Sun, Apr 27, 2008 at 10:02 PM, Evan Lezar <evanlezar@...> wrote:
> Havent tried it in win32 yet, but will as soon as possible. I have
>  been using gdm as my desktop manager, but might try kdm if i cant get
>  it working soon.

I don't expect the display manager will change anything, I merely
described what I did to get things working here.

>  I am however away from that pc till next weekend, so i will convert a
>  couple more of the plugins using emulation mode. We should also
>  discuss benchmarking etc so that we can properly analyse the
>  performance of the gpu implementations.

For a straight comparison between GPU and non-GPU plugins, the easiest
way would be to create the same tests for the GPU and non-GPU versions
for the dashboard. The dashboard tests are timed, so this gives us an
easy way to evaluate performance. See i.e.
http://www.k-3d.org/cdash/testDetails.php?test=11034&build=238

It would be interesting to see a breakdown between the calculation
time and transfer to and from main memory, though. This should allow
us to evaluate what can be gained by passing data between plugins
without going through the main memory.

Cheers,

--
Bart

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[Evan Lezar]

Hi Bart

Just to let you know that I have gotten the drivers installed and they seem to be working.  In the end all that was needed was for me to flash my bios - (which was obvious after the card worked off the bat in another machine) - still have to get the system sorted out wrt dependencies etc, but that shouldn't take too long ... so I should have some more good news shortly - and since this hurdle is now out of the way, I can really get cracking.

Thanks for the advice.
Evan

On Sun, Apr 27, 2008 at 11:23 PM, Bart Janssens <bart.janssens@...> wrote:

On Sun, Apr 27, 2008 at 10:02 PM, Evan Lezar <evanlezar@...> wrote:
> Havent tried it in win32 yet, but will as soon as possible. I have
>  been using gdm as my desktop manager, but might try kdm if i cant get
>  it working soon.

I don't expect the display manager will change anything, I merely
described what I did to get things working here.

>  I am however away from that pc till next weekend, so i will convert a
>  couple more of the plugins using emulation mode. We should also
>  discuss benchmarking etc so that we can properly analyse the
>  performance of the gpu implementations.

For a straight comparison between GPU and non-GPU plugins, the easiest
way would be to create the same tests for the GPU and non-GPU versions
for the dashboard. The dashboard tests are timed, so this gives us an
easy way to evaluate performance. See i.e.
http://www.k-3d.org/cdash/testDetails.php?test=11034&build=238

It would be interesting to see a breakdown between the calculation
time and transfer to and from main memory, though. This should allow
us to evaluate what can be gained by passing data between plugins
without going through the main memory.

Cheers,

--

Bart

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