Am 03.03.2014 00:29, schrieb John Jumper: > Hello, > > I am interested in purchasing a new GPU for my linux desktop, and > darktable performance on ~25 MB raw files is a major consideration. Is > there any solid benchmarking of darktable on various GPUs or any > substantial architectural differences between the AMD and Nvidia cards? > How much GPU memory is required to process 20 megapixel images? > > I am hoping to buy an Nvidia card because I have had a ton of problems > with AMD drivers on linux. Since darktable is float based, can I just > assume that darktable performance roughly scales with the peak FLOPS of > the card, as long as I have enough memory? > > Thank you for any help you can offer, > John Jumper >
There are no darktable specific benchmarking figures available. But it's assumed that the various "GPU compute" benchmarking figures you can find on the web are a reasonable prediction of how darktable will profit from the GPU. In terms of GPU memory we recommend to have at least 1GB. This amount is sufficient as long as you are most interested in interactive performance (latency). Reason is that darktable will normally work on scaled down images and on parts of an image with buffer sizes in the range of 15MB. If you are interested in highest performance when exporting images you will want to go for more GPU memory as darktable will need to do less tiling (processing the image in parts) then. Ulrich ------------------------------------------------------------------------------ Subversion Kills Productivity. Get off Subversion & Make the Move to Perforce. With Perforce, you get hassle-free workflows. Merge that actually works. Faster operations. Version large binaries. Built-in WAN optimization and the freedom to use Git, Perforce or both. Make the move to Perforce. http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
