I'm running an older Oland AMD graphics card and opencl works fine with it. I would also recommend at least 16G of system RAM to work hassle free with dt.
Jack On 2015-01-23 09:24 AM, Michael Völker wrote: > Hi Matthieu, > > I would take at least 16GB RAM. There's no such thing as too much of it. > Even if an application might not strictly require it, you still have a > much larger file system cache for the Kernel to toy with. That's nice > even if you have a fast SSD. > > I have never enjoyed the speed of OpenCL on a fast GPU. My current fast > computer is a laptop with an intel i7-4770HQ, that's the one with the > fastest available internal GPU. > Intel is currently developing an OpenCL driver called beignet... > http://wiki.freedesktop.org/www/Software/Beignet/ > ... but it just never worked for me. I regularly try its current git > master, but darktable always crashes with it. As beignet seems to be > fairly new, I thinks it's not darktable's fault, so I never barked. > Maybe it's neither dt's nor beignet's fault but mine. :-) > I have absolutely no idea if I could expect a speedup with OpenCL on > that GPU. While it is goddamn fast for an internal one and has an extra > L4 cache to compensate for the shared RAM, it's still slower than a good > graphics card with plenty of dedicated graphics memory. > > I you want to buy that PC specifically to enjoy darktable, then you > absolutely want OpenCL. It seems to be the best idea to have a good > graphics card with enormous amounts of memory and some standard CPU like > an i5. That's the gist on this list, afaik. Just be sure that OpenCL > will work. > And maybe there is reason to prefer AMD since they at least *have* an > Open Source driver (meaning: in-Kernel, hassle-free) which improved > considerably recently. I don't know if it supports OpenCL now, probably > not, but you have a valid chance that it might work with the free driver > and a good performance some day without setting up anything. > > That's my 2 cents... > > Michael > > > > Am Freitag, den 23.01.2015, 17:35 +0100 schrieb Matthieu Moy: >> Hi, >> >> I'm considering replacing my old computer with one that would let >> darktable run better. I'm seeking advices on which hardware pieces are >> the most important. >> >> About RAM, I currently have 4 Gb and it's clearly not much for dt, so 8 >> seems to be a minimum to work comfortably. Do you think it's worth >> paying a bit more to get 16 Gb? Or 32 Gb? >> >> Should I priviledge the CPU or the graphics card? I mean, if I get a >> good graphics card, is it still worth paying a high-end CPU or will most >> of the processing be delegated to the GPU anyway? OTOH, many CPU (like >> core i5/i7) already have a built-in GPU so I was wondering whether having >> an expansive CPU and no graphics card could be a better idea. >> >> Thanks in advance for your advices, > > > ------------------------------------------------------------------------------ > New Year. New Location. New Benefits. New Data Center in Ashburn, VA. > GigeNET is offering a free month of service with a new server in Ashburn. > Choose from 2 high performing configs, both with 100TB of bandwidth. > Higher redundancy.Lower latency.Increased capacity.Completely compliant. > http://p.sf.net/sfu/gigenet > _______________________________________________ > Darktable-users mailing list > Darktable-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/darktable-users > ------------------------------------------------------------------------------ New Year. New Location. New Benefits. New Data Center in Ashburn, VA. GigeNET is offering a free month of service with a new server in Ashburn. Choose from 2 high performing configs, both with 100TB of bandwidth. Higher redundancy.Lower latency.Increased capacity.Completely compliant. http://p.sf.net/sfu/gigenet _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
