GPU FLOPS: Theory vs Reality

Author	Message
Tom M Volunteer tester Send message Joined: 28 Nov 02 Posts: 5126 Credit: 276,046,078 RAC: 462	Message 2026266 - Posted: 4 Jan 2020, 10:56:07 UTC - in response to Message 2026201. Last modified: 4 Jan 2020, 10:57:29 UTC Well a few minutes ago I dropped the new Gtx 1660 Supers into my "box" and fired it up. The only question I have left is to swap a gtx 1070 for a gtx 1660 or not? I accidentally acquired a gtx 1660 when the listing said "Gtx 1660 Super" for an unheard of low price. No luck on the Super but it is a perfectly good Gtx 1660 that has been (previously) in the "box". Opinions welcomed. Tom Give it a run, uses less energy than the 1070 and should be about the same or close to in RAC. Is the multiprocs number important as well???? GTX 1660 TI = multiProcs 24 GTX 1660 Super = multiProcs 22 GTX 1660 = multiProcs 22 GTX 1070 = multiProcs 15 No harm in trying and finding out though? Regards Mark PS. I am impressed with my GTX 1660 Super, intend to get another one, so I dont have to use the GTX 970. I have googled "multiProcs" and for some reason Google hasn't extracted anything. Exactly what is "multiProcs" supposed to represent? ---pause-----google some more and.....----------- I think I see. It appears to be related to the number of parallel processes that a GPU can run? If so, that would be a major descriptive parameter. A higher # implies being able to run more processes in parallel. Since this is the basis for the gpu app speed up over the cpu app processing speed.... Tom A proud member of the OFA (Old Farts Association). ID: 2026266 ·

tazzduke Volunteer tester Send message Joined: 15 Sep 07 Posts: 190 Credit: 28,269,068 RAC: 5	Message 2026267 - Posted: 4 Jan 2020, 11:20:04 UTC - in response to Message 2026266. Well a few minutes ago I dropped the new Gtx 1660 Supers into my "box" and fired it up. The only question I have left is to swap a gtx 1070 for a gtx 1660 or not? I accidentally acquired a gtx 1660 when the listing said "Gtx 1660 Super" for an unheard of low price. No luck on the Super but it is a perfectly good Gtx 1660 that has been (previously) in the "box". Opinions welcomed. Tom Give it a run, uses less energy than the 1070 and should be about the same or close to in RAC. Is the multiprocs number important as well???? GTX 1660 TI = multiProcs 24 GTX 1660 Super = multiProcs 22 GTX 1660 = multiProcs 22 GTX 1070 = multiProcs 15 No harm in trying and finding out though? Regards Mark PS. I am impressed with my GTX 1660 Super, intend to get another one, so I dont have to use the GTX 970. I have googled "multiProcs" and for some reason Google hasn't extracted anything. Exactly what is "multiProcs" supposed to represent? ---pause-----google some more and.....----------- I think I see. It appears to be related to the number of parallel processes that a GPU can run? If so, that would be a major descriptive parameter. A higher # implies being able to run more processes in parallel. Since this is the basis for the gpu app speed up over the cpu app processing speed.... Tom Well there you go then, learnt something new. I found the mulitProcs number in the stderr.txt for the workunits either awaiting validated or validated. I thought the higher the number the better the card went lol. Thats why I picked a 1660 super over a 2nd hand 1070 lol. Cheers Mark ID: 2026267 ·

Keith Myers Volunteer tester Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873	Message 2026304 - Posted: 4 Jan 2020, 18:19:47 UTC - in response to Message 2026267. multiprocs refers to the number of SM's a card has. SM = Symmetric Multiprocessor = parallel Computing Unit = CU or what Nvidia calls them. More SM's or more CU's equal greater parallel math performance and the faster our tasks will run. Seti@Home classic workunits:20,676 CPU time:74,226 hours A proud member of the OFA (Old Farts Association) ID: 2026304 ·

Tom M Volunteer tester Send message Joined: 28 Nov 02 Posts: 5126 Credit: 276,046,078 RAC: 462	Message 2026309 - Posted: 4 Jan 2020, 18:37:48 UTC - in response to Message 2026304. multiprocs refers to the number of SM's a card has. SM = Symmetric Multiprocessor = parallel Computing Unit = CU or what Nvidia calls them. More SM's or more CU's equal greater parallel math performance and the faster our tasks will run. Thank you for the clarification. A proud member of the OFA (Old Farts Association). ID: 2026309 ·

Tom M Volunteer tester Send message Joined: 28 Nov 02 Posts: 5126 Credit: 276,046,078 RAC: 462	Message 2026310 - Posted: 4 Jan 2020, 18:39:13 UTC - in response to Message 2026267. I have googled "multiProcs" and for some reason Google hasn't extracted anything. Exactly what is "multiProcs" supposed to represent? ---pause-----google some more and.....----------- I think I see. It appears to be related to the number of parallel processes that a GPU can run? If so, that would be a major descriptive parameter. A higher # implies being able to run more processes in parallel. Since this is the basis for the gpu app speed up over the cpu app processing speed.... Tom Well there you go then, learnt something new. I found the mulitProcs number in the stderr.txt for the workunits either awaiting validated or validated. I thought the higher the number the better the card went lol. Thats why I picked a 1660 super over a 2nd hand 1070 lol. Cheers Mark And Thank you for bringing it up. Just made the change a few minutes ago. Tom A proud member of the OFA (Old Farts Association). ID: 2026310 ·

tazzduke Volunteer tester Send message Joined: 15 Sep 07 Posts: 190 Credit: 28,269,068 RAC: 5	Message 2026355 - Posted: 5 Jan 2020, 0:21:39 UTC - in response to Message 2026310. I have googled "multiProcs" and for some reason Google hasn't extracted anything. Exactly what is "multiProcs" supposed to represent? ---pause-----google some more and.....----------- I think I see. It appears to be related to the number of parallel processes that a GPU can run? If so, that would be a major descriptive parameter. A higher # implies being able to run more processes in parallel. Since this is the basis for the gpu app speed up over the cpu app processing speed.... Tom Well there you go then, learnt something new. I found the mulitProcs number in the stderr.txt for the workunits either awaiting validated or validated. I thought the higher the number the better the card went lol. Thats why I picked a 1660 super over a 2nd hand 1070 lol. Cheers Mark And Thank you for bringing it up. Just made the change a few minutes ago. Tom :-) ID: 2026355 ·

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