Hi, As speckert i'am also confused regarding the choice of a graphic card with decent openCL support in QC. I asked for a refund for my ATI 5870. I recently read the ATI 5770 doesn't support double precision floating point. It looks like the best candidate with mature drivers were the ATI 4870 and the Nvidia GTX 285 but there are no longer available in the Apple Store.
What is actually the recommanded graphic card for MacPro with decent OpenCL support for development in Quartz Composer ? Thanks for any help, JeanMarc Noel Le 22 nov. 2010 à 04:56, speckert a écrit : > Christopher, > > I'm confused. > > I was definitely under the impression that if I bought a Mac Pro, Westmere, > and the high end graphics card, 5870, that I would be able to use OpenCL in > the development tools, in particular in Quartz Composer. > > Do I need to buy an Nvidia card to use OpenCL? > > Does QC support the 5870 for OpenCL development? > > These should not be complicated questions or answers. Either it does or it > does not. > > Which is it? > > -- Glen > > On Nov 18, 2010, at 10:18 AM, Christopher Wright wrote: > >> Hi JeanMarc :) >> >>> This page is listing the cards that support OpenCl with Snow Leopard : >>> Apple - Mac OS X Snow Leopard - Technical specifications >>> >>> But it looks like it is not really up-to-date or perhaps optimistic. >> >> It's potentially correct/up-to-date, but it may not be enough for QC. QC >> requires some additional CL features, and it might be those extensions that >> the card doesn't support. >> >> (Think of it like you would multisampling, or floating point textures in >> OpenGL -- not all GPUs support multisampling or floating point textures >> because they're extensions, so if your program absolutely _required_ those >> features, it just wouldn't work on that GPU. The GPU would still "support >> OpenGL", just not some of the advanced stuff you need). >> >> -- >> Christopher Wright >> [email protected] >> >> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Quartzcomposer-dev mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/quartzcomposer-dev/speckert%40specktech.com >> >> This email sent to [email protected] > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/quartzcomposer-dev/jm%40yanomanow.com > > This email sent to [email protected]
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