Does darktable primary needs double precision or single precision performance when using opencl?
Am Donnerstag, 4. Juli 2013, 23:06:56 schrieb WhizzMan: > The hybrid nvidia/intel solution is for laptops and it's not very well > supported under linux. I don't think you should see that as an example to > openCL with NVidia on linux. > > As far as closed source drivers go, my PC with radeon 7850 is still > crashing the X server when I resize windows that have accelerated things > happening inside them often. I don't have an NVidia card that is supported > by DarkTable for openCL in any of my machines, so I can't comment on speed. > Regardless of openCL performance of NVidia versus AMD, it will still be a > lot faster than the CPU-only solution. I'm impressed with what AMD has come > up with so far, but it's not stable enough on my personal machine (very > small sample size) for me to recommend it to anyone personally. I know > NVidia is good enough, but it may indeed be a lot slower than AMD on openCL. > > I'm fairly certain you can use an AMD for openCL and an NVidia card for > display simultaneously. Anyone that has experience with this? > > > On Thu, Jul 4, 2013 at 8:26 PM, Kinslayer von Hellracer > > <[email protected]>wrote: > > Thank you for your explanations about your experience. Of course I would > > like > > to avoid such problem by choosing the correct hardware. Therefor I would > > use a > > desktop computer, disable the integrated GPU and just use the PCIe > > graphics > > card. > > > > I usually use ArchLinux which always contains the bleeding edge software. > > I > > hope to have a easy solution for OpenCL performance via repository. > > > > Karsten > > > > Am Donnerstag, 4. Juli 2013, 10:19:07 schrieb David Vincent-Jones: > > > My personal experience with OpenCL has 'not been good'. > > > > > > I purchased a Lenovo W530 Laptop with a nVidia card, it looked like the > > > ultimate graphics machine. I found however that I needed to install > > > Bumblebee to get OpenGL working and that the system still had problems > > > with OpenCL. But simple Bumblebee did not allow me to get any VGA or > > > other output from the system .. that required a further complex install > > > process. There are apparently brand new nVidia drivers for my setup but > > > under xUbuntu they currently appear impossible to install. It is > > > possible that under Fedora or Suse there *may* be better support; I did > > > even consider switching platforms. > > > > > > It appears that this entire arena is under continuous (and fast) > > > development, my hope is that by the end of the year things will be more > > > simple and stable. It does also appear that on regular 'tower' computers > > > there are less problems but I want to keep with the portability of a > > > high resolution laptop .... > > > > > > I am sure this is not what you wanted to hear ... it just happens to be > > > my reality. I have become tired of multiple install and re-install > > > sessions so I now run my Super machine in 'plain Jane' mode and simply > > > look forward to nVidia (or somebody) getting their act together in the > > > near future. > > > > > > David > > > > > > On 13-07-04 08:56 AM, Kinslayer von Hellracer wrote: > > > > Hi all, > > > > > > > > I'm thinking of a new PC because my old laptop is really slow. > > > > Therefor I would like to spent some money to get a fast computer. As > > > > I read the old thread from darktable mailing list OpenCL can generate > > > > much more speedup than a fast CPU. As I read last benchmarks it seems > > > > like the nVidia OpenCL performance is really bad at the moment. > > > > Otherwise I was always sure that AMD has bad Linxu support. > > > > > > > > So does anyone knows which hardware would be better to use? nVida or > > > > AMD graphics card? Does darktable support more than one graphics card > > > > for OpenCL usage? Or could darktable use some co-processors like the > > > > nVidia Tesla for OpenCL calculations? > > > > > > > > How good is the darktable performance for multi threading? I checked > > > > some dual socket workstations with 2 CPUs (Intel Xeon). Could > > > > darktable use 12 or 16 physical CPU Cores? > > > > > > > > I would be happy to have some information about this. > > > > > > > > Thanks > > > > > > > > Karsten > > > > -------------------------------------------------------------------------- > > --> > > > -- > > > > > > This SF.net email is sponsored by Windows: > > > > Build for Windows Store. > > > > > > > > http://p.sf.net/sfu/windows-dev2dev > > > > _______________________________________________ Darktable-users > > > > mailing list [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/darktable-users > > > > -------------------------------------------------------------------------- > > ---- This SF.net email is sponsored by Windows: > > > > Build for Windows Store. > > > > http://p.sf.net/sfu/windows-dev2dev > > _______________________________________________ > > Darktable-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/darktable-users ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. 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