My speed increase is substantial with opencl. My guess is that your gpu is on the slower side of the performance curve.
On August 14, 2020 11:37:51 AM UTC, Giuseppe Pagnoni <gpagn...@gmail.com> wrote: >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 <jimr...@gmail.com> 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 <gpagn...@gmail.com> >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 <jimr...@gmail.com> >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 ><gpagn...@gmail.com> 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 >darktable-user+unsubscr...@lists.darktable.org >>> >> >>> > >>> > >____________________________________________________________________________ >darktable user mailing list to unsubscribe send a mail to >darktable-user+unsubscr...@lists.darktable.org >>> >>> >>> >>> -- >>> 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 >darktable-user+unsubscr...@lists.darktable.org -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
