Thank you very much Jim, your suggestion was very helpful. The figures without and with opencl are 17.470 and 15.871 sec, respectively, corresponding to an opencl-related improvement in performance of around 9%. I have to say I am a bit underwhelmed by the benefits of opencl (or by the graphic card in the latest MacBook Pro, if that's the culprit).
cheers giuseppe On Fri, Aug 14, 2020 at 1:24 PM Jim Robinson <[email protected]> wrote: > > Giuseppe, > > I don't have a Mac myself so now idea how good the GPU is. How does the > 15sec compare with the time taken with opencl disabled > (--disable-opencl)? With a high end GPU with lots of memory factors of 10 > times faster seem to have been achieved though factors somewhat below 10 > (e.g. 4 or 5) seem more typical -see the examples in the link I originally > included. > > Jim > > Jim > > On Fri, 14 Aug 2020 at 11:25, Giuseppe Pagnoni <[email protected]> wrote: >> >> Hello Jim, >> >> thanks for the suggestion! I tried the following: >> >> CPU + GPU, using OpenCL: >> darktable-cli bench.SRW bench.SRW.xmp test.jpg --core -d perf -d opencl >> >> all the events were successful and the total time was 15 sec. Is that >> a reasonable value? >> >> giuseppe >> >> On Fri, Aug 14, 2020 at 11:13 AM Jim Robinson <[email protected]> wrote: >> > >> > Giuseppe, >> > >> > You could try the benchmarks described here. >> > https://math.dartmouth.edu/~sarunas/darktable_bench.html >> > >> > A bit old now, but should still work. >> > >> > >> > >> > On Fri, 14 Aug 2020 at 10:03, Giuseppe Pagnoni <[email protected]> wrote: >> >> >> >> Hi, >> >> >> >> I have just installed the latest 3.2.1 version on a 13" MacBook Pro >> >> (latest model) with an Intel Iris Plus Graphics 1536 GPU. I don't >> >> really see much of an increase in speed when I activate the OpenCL >> >> support. Is this the way it is supposed to be? Could you suggest a >> >> way to test it more rigorously? >> >> >> >> thank you in advance for any comments >> >> >> >> giuseppe >> >> >> >> -- >> >> Giuseppe Pagnoni >> >> Dip. Scienze Biomediche, Metaboliche e Neuroscienze >> >> Sezione Fisiologia e Neuroscienze >> >> Univ. di Modena e Reggio Emilia >> >> Via Campi 287 >> >> I-41125 Modena, Italy >> >> Tel: +39-059-205-5742 >> >> Fax: +39-059-205-5363 >> >> ____________________________________________________________________________ >> >> darktable user mailing list >> >> to unsubscribe send a mail to >> >> [email protected] >> >> >> > >> > ____________________________________________________________________________ >> > darktable user mailing list to unsubscribe send a mail to >> > [email protected] >> >> >> >> -- >> Giuseppe Pagnoni >> Dip. Scienze Biomediche, Metaboliche e Neuroscienze >> Sezione Fisiologia e Neuroscienze >> Univ. di Modena e Reggio Emilia >> Via Campi 287 >> I-41125 Modena, Italy >> Tel: +39-059-205-5742 >> Fax: +39-059-205-5363 -- Giuseppe Pagnoni Dip. Scienze Biomediche, Metaboliche e Neuroscienze Sezione Fisiologia e Neuroscienze Univ. di Modena e Reggio Emilia Via Campi 287 I-41125 Modena, Italy Tel: +39-059-205-5742 Fax: +39-059-205-5363 ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
