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Re: CUDA Support Issues on Current Laptops

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114096] Re: CUDA Support Issues on Current Laptops
  • From: adakkak <adakkak at gmail.com>
  • Date: Tue, 23 Nov 2010 06:01:00 -0500 (EST)
  • References: <ic5iap$3uj$1@smc.vnet.net> <ic9lhf$o1l$1@smc.vnet.net> <icdo1v$67g$1@smc.vnet.net>

On Nov 22, 7:35 am, telefunkenvf14 <rgo... at gmail.com> wrote:
> On Nov 20, 5:27 pm, Yves Klett <yves.kl... at googlemail.com> wrote:
>
>
>
> > I can affirm that for my battered Dell M4200 with NVidia QuadroFX 360
> > graphics: The "newest" (anno 2008) Dell driver does not work with
> > CUDALink, while the current NVIDIA driver for this card works fine.
>
> > Beware: This is not to say that switching to "unofficial" drivers will
> > not do any kind of damage - it just worked in my case (so far). I rather
> > think that Dell does not keep up driver maintenance for older machines
> > and graphics cards.
>
> > Regards,
> > Yves
>
> > Am 19.11.2010 11:08, schrieb telefunkenvf14:
>
> > > Short version:
>
> > > Before you purchase a new laptop make sure to thoroughly research the
> > > CUDA support and ability to upgrade graphics drivers. Do you have to
> > > use OEM drivers or can you install drivers directly from NVIDIA?
>
> > > Long version:
>
> > > For those interested in CUDA on a newer laptop, or those interested in
> > > purchasing a new laptop because it claims to support CUDA, a warning:
>
> > > Lack of support from your laptop manufacturer may make it difficult to
> > > dive right in to CUDA programming in Mathematica 8. (So don't blame
> > > WRI, or even NVIDIA, if/when it doesn't work!!!) Based on what I've
> > > learned, the warning is especially valid for machines with some sort
> > > of switchable graphics.
>
> > > Why?
>
> > > Drivers for these systems are a combination of Intel and (in my case)
> > > NVIDIA drivers, and a lot of tweaks go into making them play nice
> > > together. As such, the NVIDIA drivers currently packaged in OEM laptop
> > > drivers (from companies like Dell, Sony, Acer, etc.) are often way out
> > > of date in terms of CUDA version support.
> > > Even more frustrating is the fact that these companies appear
> > > unconcerned with maintaining updated graphics drivers and CUDA
> > > support. I say this given that they continue to sell supposedly CUDA
> > > compliant machines---ok, yeah, but it's CUDA version 2 or 2.2. (These
> > > versions are waaaay out of date in CUDA land.) **I'm not aware of
> > > Apple's CUDA support, but presume it's probably better.**
>
> > > Aren't there some workarounds?
>
> > > Not really unless you are willing to try either:
>
> > > (1) bios hacks (so you can shut switchable graphics off completely and
> > > force the NVIDIA driver to be used full time). Windows *might* then
> > > let you install the new version of the appropriate driver. Of course,
> > > you might also void your warranty and/or brick your machine. Great
> > > combo! :D
>
> > > (2) hacking together newer versions of Intel and NVIDIA drivers for
> > > your machine, or trying hacked driver packages produced by others and
> > > downloaded from shady corners of the web. This is also PITA because
> > > you'll have to deal with driver signing on 64-bit versions of Windows.
>
> > > -RG
>
> > > FYI: I've been using the last two prereleases of Mathematica v8 and
> > > haven't been able to get any version of CUDA working on my brand new
> > > Sony Z12 laptop. I love the laptop overall---check the specs on these
> > > things and you'll see why---but, after all this hassle, I wish I'd
> > > just gone with a new MacBook Pro or at least Googled Sony Z CUDA
> > > Support prior to ordering.
>
> Be thankful you can at least 'force' install the correct NVIDIA
> drivers. This is not possible on my Sony due to the way they
> implemented switchable graphics. And so I wait, hoping for an
> update...
>
> -RG


You might want to look at http://forums.laptopvideo2go.com/ they have
drivers that have been tweaked so that they would install even if the
"official" drivers do not.

I had this issue a few months ago when I bought a laptop specifically
for CUDA development to find out that it came with a driver from last
year. The OEM did not have updated driver, and the official drivers
would not install. Installing the unofficial drivers worked, however.


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