If I have time tonight I'll try to run some benchmarks. But, subjectively, my Radeon 7750 performs well for dt, isn't too expensive and is silent. There are much faster cards of course.
Rob. -----Original Message----- From: thouks [mailto:[email protected]] Sent: 21 May 2013 08:14 To: [email protected] Subject: Re: [Darktable-users] Lightable performance tuning I made some benchmarks with and without opencl activated. My setup: core i5-2500, 16GB, GeForce GT 640 (2GB) Ubuntu 13.04, Gnome Shell (3.8), Nvidia 310.44, git-Master What I did: Load from Lighttable in Darkroom Processing Shadows¬Highlights (default) Back to Lightroom Export as full size jpeg (100%) P1020413.RW Lighttable -> Darkroom Opencl on Opencl off [s] cpu[s] [s] cpu[s] [dev_process_image] pixel pipeline processing 0,022 0,032 0,42 1,216 [dev_process_preview] pixel pipeline processing 0,097 0,228 0,107 0,228 Shadows & Highlights [dev_process_preview] pixel pipeline processing 0,284 0,448 0,208 0,596 [dev_process_image] pixel pipeline processing 0,371 0,5 0,242 0,652 Darkroom -> Lighttable [dev_process_thumbnail] pixel pipeline 0,087 0,072 0,051 0,096 Export [export] creating pixelpipe 0,136 0,164 0,137 0,172 [dev_process_export] pixel pipeline processing 1,02 0,46 1,189 3,512 Maybe we can compare some benchmark results to find a graphics card with a good price/ perfomance balance. Probably there is a better way to benchmark with darktable. For comparable results: https://dl.dropboxusercontent.com/u/352146/P1020413.RW2 regards Am 20.05.2013, 23:07 Uhr, schrieb Ulrich Pegelow <[email protected]>: > can't make any benchmarks right now (holiday time :) > > Anyhow, what is your setting on the number of background jobs in core > options? > > Ulrich > > Am 20.05.2013 um 22:23 schrieb Emmanuel Lacour <[email protected]>: > >> On 19/05/2013 22:21, Ulrich Pegelow wrote: >>> Hi, >>> >>> as a highly performant OpenCL device consider a Radeon HD7950 or >>> better. >> >> >> before I spent so much money in this, can someone share the average >> thumbnail generation time (from raw, not from embedded jpeg) >> difference with and without such card? >> >> >> --------------------------------------------------------------------- >> --------- AlienVault Unified Security Management (USM) platform >> delivers complete security visibility with the essential security >> capabilities. 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