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Re: CUDA Support Issues on Current Laptops

  • To: mathgroup at smc.vnet.net
  • Subject: [mg114028] Re: CUDA Support Issues on Current Laptops
  • From: Yves Klett <yves.klett at googlemail.com>
  • Date: Sat, 20 Nov 2010 18:27:41 -0500 (EST)
  • References: <ic5iap$3uj$1@smc.vnet.net>

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 versions are waaaay out of date in CUDA land.)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.
> 


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