--device cuda:operations=8192 and --intermediate filter:runlength=8192 should give good results if you do not care for UI responsiveness. bigger values increase the time interval between filter runs on the CPU too much, so finished chains clutter up resources on the GPU.
For multiple GPUs you have to spawn a process for each card, with --device cuda:devno=X, with X = 0, 1, 2, ... and you have to write to different output files. As i do not have hardware with multiple cards, i could not test whether all is working fine. You should run the test cases in the Makefile to verify. the blocks and threads options are already optimal, you do not have to worry about them. But if you find another block/thread allocation scheme that produces correct chains and runs faster, let us know. > Hi to the List, > > i am new to the Project and i am getting a little confused to get the > best values for my headless system with that cards: > > 01:00.0 VGA compatible controller: nVidia Corporation GT200 [GTX280] > (rev a1) > 02:00.0 VGA compatible controller: nVidia Corporation GT200 [GTX280] > (rev a1) > 04:00.0 VGA compatible controller: nVidia Corporation GT200 [GTX280] > (rev a1) > 05:00.0 VGA compatible controller: nVidia Corporation GT200 [GTX280] > (rev a1) > > The cgi script generated me a setting for --device cuda:operations=512, > i played a little bit around with that value to improve the Speed. > > with 512 i got 111 chains/s > with 1024 it was 123 chains/s > with 2048 it is stable with 143 chains/s > > After that i searched in the posts from the List and there i found: > > blocks and threads can be configured like > > --device cuda:blocks=23:threads=42 > > so which way is the better way ? > can somebody give me a hint which way is better to test ? > > Regards > > Axel > > > > > > _______________________________________________ > A51 mailing list > [email protected] > http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51 > ______________________________________________________ GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! Jetzt freischalten unter http://movieflat.web.de _______________________________________________ A51 mailing list [email protected] http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51
