PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Seventeen or Bust : AMD 1950X - SOB WU's

Author Message
Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137362 - Posted: 7 Feb 2020 | 3:34:33 UTC
Last modified: 7 Feb 2020 | 3:35:05 UTC

Before I go off and do a whole bunch of testing which could be for nothing, does anyone run a 16 core processor and have completed Michael's testing to get the best thread/task result?

Someone may have done all the hard work and can say that 4*4 works best.
I'm not up for reinventing the wheel :D

The current TDP challenge reignites my liking of PG :D Especially now that I have the settings worked out (Sun, Mercury etc)
____________

KeithProject donor
Avatar
Send message
Joined: 8 Dec 13
Posts: 391
ID: 284516
Credit: 360,460,011
RAC: 243,107
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 3 primes in the 2019 Tour de PrimesFound 2 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,055,954)Cullen LLR Turquoise: Earned 5,000,000 credits (5,064,934)ESP LLR Turquoise: Earned 5,000,000 credits (5,005,551)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,002,124)PPS LLR Turquoise: Earned 5,000,000 credits (9,873,020)PSP LLR Turquoise: Earned 5,000,000 credits (5,032,097)SoB LLR Turquoise: Earned 5,000,000 credits (9,976,992)SR5 LLR Turquoise: Earned 5,000,000 credits (9,846,106)SGS LLR Turquoise: Earned 5,000,000 credits (5,012,861)TRP LLR Turquoise: Earned 5,000,000 credits (5,759,074)Woodall LLR Turquoise: Earned 5,000,000 credits (5,053,050)321 Sieve Jade: Earned 10,000,000 credits (10,120,432)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,111,958)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Emerald: Earned 50,000,000 credits (78,413,985)GFN Emerald: Earned 50,000,000 credits (93,673,159)PSA Silver: Earned 100,000 credits (442,843)
Message 137363 - Posted: 7 Feb 2020 | 3:52:32 UTC

Someone with a 1950X specifically would have to chime in here.
No two 16 core CPU's are alike. Different cache sizes, different architectures, etc will all impact where the "optimal" settings for performance are.

My advice is to test and see where the throughput starts to drop off.

1x16 threads
2x8 threads
etc

Once you hit a point of lower throughput you can stop testing.
____________
My Primes
Badge Score: 2*1 + 4*2 + 6*12 + 7*1 + 9*2 + 10*1 = 117

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137370 - Posted: 7 Feb 2020 | 5:48:08 UTC

Thanks Keith.

Lets see if someone comes along. SoB is a pretty specific Thread.
____________

mackerelProject donor
Volunteer tester
Avatar
Send message
Joined: 2 Oct 08
Posts: 2324
ID: 29980
Credit: 405,106,300
RAC: 195,415
Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 5 primes in the 2019 Tour de PrimesFound 6 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (8,774,878)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (6,454,573)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,122,074)PPS LLR Emerald: Earned 50,000,000 credits (71,938,410)PSP LLR Jade: Earned 10,000,000 credits (15,223,714)SoB LLR Jade: Earned 10,000,000 credits (17,319,914)SR5 LLR Sapphire: Earned 20,000,000 credits (23,993,013)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Jade: Earned 10,000,000 credits (16,460,208)Woodall LLR Turquoise: Earned 5,000,000 credits (5,715,464)321 Sieve Jade: Earned 10,000,000 credits (18,014,408)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,626,419)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Sapphire: Earned 20,000,000 credits (21,918,894)GFN Emerald: Earned 50,000,000 credits (71,886,552)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 137386 - Posted: 7 Feb 2020 | 10:40:10 UTC

One possibly easier method to test it, other than to manually run each configuration, is to use the Prime95 built in benchmark.

Download the latest version of Prime95 and go to the benchmark tab. Enter into the min and max FFT size the size of a SoB unit. You'll have to find that from elsewhere, although in a quick poke 3072k is one that was used recently. Hopefully it'll detect 16 cores, you can uncheck "use hyperthreading", I think it is more correct in this case to check "use complex FFTs" but it doesn't make much difference. Under number of workers to benchmark, this is how many simultaneous tasks, and it'll divide the cores between them. I think 1, 2, 4, 8, 16 are meaningful options here. So that would run 1 task with 16 cores, 2 tasks with 8 cores each, and so on. You want to see the highest throughput reported.

Example output for a quad core running 1, 2, 4 workers:
Timings for 3072K all-complex FFT length (4 cores, 1 worker): 3.13 ms. Throughput: 318.98 iter/sec.
Timings for 3072K all-complex FFT length (4 cores, 2 workers): 6.27, 6.22 ms. Throughput: 320.33 iter/sec.
Timings for 3072K all-complex FFT length (4 cores, 4 workers): 12.52, 12.39, 12.38, 12.41 ms. Throughput: 321.89 iter/sec.

It seems 4 workers (4 tasks using 1 core each) is fastest, but only about 1% faster than 1 task using 4 cores. So in this case I'd use the latter as it isn't a significant difference, but returning units faster is more helpful than 1% extra possible throughput.

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137392 - Posted: 7 Feb 2020 | 11:52:45 UTC

Hi Mackerel,

I checked and saw a max FFT of 3200K.
Do I have the "Run FFT's in place" checkbox ticked?

Also, how long would I run the test for?
"Time to run each FFT size"


Thank you

____________

Profile AzmodesProject donor
Avatar
Send message
Joined: 30 Dec 16
Posts: 177
ID: 479275
Credit: 1,414,279,439
RAC: 244,434
Discovered 1 mega primeDiscovered 1 AP26Found 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de Primes321 LLR Gold: Earned 500,000 credits (526,067)Cullen LLR Gold: Earned 500,000 credits (655,307)ESP LLR Gold: Earned 500,000 credits (636,968)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (593,701)PPS LLR Turquoise: Earned 5,000,000 credits (5,374,558)PSP LLR Turquoise: Earned 5,000,000 credits (5,239,934)SoB LLR Jade: Earned 10,000,000 credits (10,263,832)SR5 LLR Turquoise: Earned 5,000,000 credits (6,703,826)SGS LLR Amethyst: Earned 1,000,000 credits (1,372,387)TRP LLR Gold: Earned 500,000 credits (543,758)Woodall LLR Amethyst: Earned 1,000,000 credits (1,060,120)321 Sieve Jade: Earned 10,000,000 credits (10,147,267)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,919,526)PPS Sieve Double Silver: Earned 200,000,000 credits (246,335,825)TRP Sieve (suspended) Bronze: Earned 10,000 credits (39,046)AP 26/27 Emerald: Earned 50,000,000 credits (83,164,510)GFN Double Bronze: Earned 100,000,000 credits (166,488,381)PSA Double Gold: Earned 500,000,000 credits (846,214,425)
Message 137395 - Posted: 7 Feb 2020 | 12:21:40 UTC
Last modified: 7 Feb 2020 | 12:23:07 UTC

http://www.primegrid.com/forum_thread.php?id=8266

EDIT: It may be noteworthy that back then I did not set affinities to physical cores only. May be worth another try.
____________
Long live the sievers.

+ Encyclopaedia Metallum: The Metal Archives +

mackerelProject donor
Volunteer tester
Avatar
Send message
Joined: 2 Oct 08
Posts: 2324
ID: 29980
Credit: 405,106,300
RAC: 195,415
Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 5 primes in the 2019 Tour de PrimesFound 6 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (8,774,878)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (6,454,573)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,122,074)PPS LLR Emerald: Earned 50,000,000 credits (71,938,410)PSP LLR Jade: Earned 10,000,000 credits (15,223,714)SoB LLR Jade: Earned 10,000,000 credits (17,319,914)SR5 LLR Sapphire: Earned 20,000,000 credits (23,993,013)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Jade: Earned 10,000,000 credits (16,460,208)Woodall LLR Turquoise: Earned 5,000,000 credits (5,715,464)321 Sieve Jade: Earned 10,000,000 credits (18,014,408)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,626,419)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Sapphire: Earned 20,000,000 credits (21,918,894)GFN Emerald: Earned 50,000,000 credits (71,886,552)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 137396 - Posted: 7 Feb 2020 | 12:21:51 UTC - in response to Message 137392.

That sounds like the stress test window, cancel that. The benchmark option is in the menu somewhere.

Profile dannyridel
Avatar
Send message
Joined: 3 Feb 19
Posts: 230
ID: 1097922
Credit: 1,791,645
RAC: 1,750
321 LLR Bronze: Earned 10,000 credits (45,370)Cullen LLR Bronze: Earned 10,000 credits (18,311)ESP LLR Bronze: Earned 10,000 credits (25,105)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (22,373)PPS LLR Silver: Earned 100,000 credits (141,789)PSP LLR Bronze: Earned 10,000 credits (65,677)SR5 LLR Bronze: Earned 10,000 credits (48,432)SGS LLR Bronze: Earned 10,000 credits (10,178)TRP LLR Bronze: Earned 10,000 credits (39,419)Woodall LLR Bronze: Earned 10,000 credits (19,031)321 Sieve Silver: Earned 100,000 credits (173,207)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Gold: Earned 500,000 credits (552,844)AP 26/27 Bronze: Earned 10,000 credits (52,559)GFN Silver: Earned 100,000 credits (189,280)PSA Silver: Earned 100,000 credits (358,037)
Message 137397 - Posted: 7 Feb 2020 | 12:23:58 UTC

It's under Options, right under torture test
____________
JonDan School Services
GFN-14: 50103906^16384+1
AP 21: 104383195353409757+142406036*23#*n for n=0..20

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137401 - Posted: 7 Feb 2020 | 13:17:01 UTC

Oops. Thank you. And thank you Azmodes.
Can you please explain these results?

http://www.primegrid.com/forum_thread.php?id=8266&nowrap=true#123869

I understand the 1 w/u across 16 cores etc right down to 16 wu's with 1 core each but which is the most productive?
Somewhere in the middle I guess.


____________

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137402 - Posted: 7 Feb 2020 | 13:32:30 UTC


[Feb 7 23:20] Benchmarking multiple workers to measure the impact of memory bandwidth

[Feb 7 23:20] Timing 16K all-complex FFT, 16 cores, 1 worker. Average times: 0.14 ms. Total throughput: 7306.25 iter/sec.

[Feb 7 23:21] Timing 16K all-complex FFT, 16 cores, 4 workers. Average times: 0.05, 0.06, 0.05, 0.06 ms. Total throughput: 75110.17 iter/sec.

[Feb 7 23:22] Timing 16K all-complex FFT, 16 cores, 8 workers. Average times: 0.06, 0.06, 0.08, 0.07, 0.06, 0.06, 0.06, 0.06 ms. Total throughput: 122487.72 iter/sec.

[Feb 7 23:23] Timing 16K all-complex FFT, 16 cores, 16 workers. Average times: 0.09, 0.09, 0.09, 0.09, 0.09, 0.10, 0.09, 0.10, 0.10, 0.10, 0.09, 0.09, 0.10, 0.10, 0.09, 0.10 ms. Tot

[Feb 7 23:24] Timing 18K all-complex FFT, 16 cores, 1 worker. Average times: 0.15 ms. Total throughput: 6796.79 iter/sec.

[Feb 7 23:25] Timing 18K all-complex FFT, 16 cores, 4 workers. Average times: 0.06, 0.07, 0.07, 0.06 ms. Total throughput: 59685.85 iter/sec.

[Feb 7 23:26] Timing 18K all-complex FFT, 16 cores, 8 workers. Average times: 0.07, 0.09, 0.08, 0.08, 0.08, 0.10, 0.08, 0.08 ms. Total throughput: 97323.04 iter/sec.

[Feb 7 23:27] Timing 18K all-complex FFT, 16 cores, 16 workers. Average times: 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.12, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11 ms. Tot
stopped.

So, the answer is here but I don't know what I'm looking at lol.
Which one is best?

Thanks guys

____________

Profile dannyridel
Avatar
Send message
Joined: 3 Feb 19
Posts: 230
ID: 1097922
Credit: 1,791,645
RAC: 1,750
321 LLR Bronze: Earned 10,000 credits (45,370)Cullen LLR Bronze: Earned 10,000 credits (18,311)ESP LLR Bronze: Earned 10,000 credits (25,105)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (22,373)PPS LLR Silver: Earned 100,000 credits (141,789)PSP LLR Bronze: Earned 10,000 credits (65,677)SR5 LLR Bronze: Earned 10,000 credits (48,432)SGS LLR Bronze: Earned 10,000 credits (10,178)TRP LLR Bronze: Earned 10,000 credits (39,419)Woodall LLR Bronze: Earned 10,000 credits (19,031)321 Sieve Silver: Earned 100,000 credits (173,207)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Gold: Earned 500,000 credits (552,844)AP 26/27 Bronze: Earned 10,000 credits (52,559)GFN Silver: Earned 100,000 credits (189,280)PSA Silver: Earned 100,000 credits (358,037)
Message 137403 - Posted: 7 Feb 2020 | 13:57:07 UTC - in response to Message 137402.
Last modified: 7 Feb 2020 | 13:58:43 UTC


[Feb 7 23:20] Benchmarking multiple workers to measure the impact of memory bandwidth

[Feb 7 23:20] Timing 16K all-complex FFT, 16 cores, 1 worker. Average times: 0.14 ms. Total throughput: 7306.25 iter/sec.

[Feb 7 23:21] Timing 16K all-complex FFT, 16 cores, 4 workers. Average times: 0.05, 0.06, 0.05, 0.06 ms. Total throughput: 75110.17 iter/sec.

[Feb 7 23:22] Timing 16K all-complex FFT, 16 cores, 8 workers. Average times: 0.06, 0.06, 0.08, 0.07, 0.06, 0.06, 0.06, 0.06 ms. Total throughput: 122487.72 iter/sec.

[Feb 7 23:23] Timing 16K all-complex FFT, 16 cores, 16 workers. Average times: 0.09, 0.09, 0.09, 0.09, 0.09, 0.10, 0.09, 0.10, 0.10, 0.10, 0.09, 0.09, 0.10, 0.10, 0.09, 0.10 ms. Tot

[Feb 7 23:24] Timing 18K all-complex FFT, 16 cores, 1 worker. Average times: 0.15 ms. Total throughput: 6796.79 iter/sec.

[Feb 7 23:25] Timing 18K all-complex FFT, 16 cores, 4 workers. Average times: 0.06, 0.07, 0.07, 0.06 ms. Total throughput: 59685.85 iter/sec.

[Feb 7 23:26] Timing 18K all-complex FFT, 16 cores, 8 workers. Average times: 0.07, 0.09, 0.08, 0.08, 0.08, 0.10, 0.08, 0.08 ms. Total throughput: 97323.04 iter/sec

[Feb 7 23:27] Timing 18K all-complex FFT, 16 cores, 16 workers. Average times: 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.12, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11 ms. Tot
stopped.


It seems you didn't paste your results correctly with the bolded parts. From your current results, the lines underlined may be the best throughput option.[/u]
____________
JonDan School Services
GFN-14: 50103906^16384+1
AP 21: 104383195353409757+142406036*23#*n for n=0..20

Profile AzmodesProject donor
Avatar
Send message
Joined: 30 Dec 16
Posts: 177
ID: 479275
Credit: 1,414,279,439
RAC: 244,434
Discovered 1 mega primeDiscovered 1 AP26Found 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de Primes321 LLR Gold: Earned 500,000 credits (526,067)Cullen LLR Gold: Earned 500,000 credits (655,307)ESP LLR Gold: Earned 500,000 credits (636,968)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (593,701)PPS LLR Turquoise: Earned 5,000,000 credits (5,374,558)PSP LLR Turquoise: Earned 5,000,000 credits (5,239,934)SoB LLR Jade: Earned 10,000,000 credits (10,263,832)SR5 LLR Turquoise: Earned 5,000,000 credits (6,703,826)SGS LLR Amethyst: Earned 1,000,000 credits (1,372,387)TRP LLR Gold: Earned 500,000 credits (543,758)Woodall LLR Amethyst: Earned 1,000,000 credits (1,060,120)321 Sieve Jade: Earned 10,000,000 credits (10,147,267)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,919,526)PPS Sieve Double Silver: Earned 200,000,000 credits (246,335,825)TRP Sieve (suspended) Bronze: Earned 10,000 credits (39,046)AP 26/27 Emerald: Earned 50,000,000 credits (83,164,510)GFN Double Bronze: Earned 100,000,000 credits (166,488,381)PSA Double Gold: Earned 500,000,000 credits (846,214,425)
Message 137466 - Posted: 7 Feb 2020 | 22:57:29 UTC - in response to Message 137401.
Last modified: 7 Feb 2020 | 22:59:27 UTC

Oops. Thank you. And thank you Azmodes.
Can you please explain these results?

http://www.primegrid.com/forum_thread.php?id=8266&nowrap=true#123869

I understand the 1 w/u across 16 cores etc right down to 16 wu's with 1 core each but which is the most productive?
Somewhere in the middle I guess.


Well, no. Check the tasks per day column. The issue with my findings was that multithreading made things faster, but always hurt throughput, i.e. 16 single-core tasks were always the most productive.

Moi wrote:
EDIT: It may be noteworthy that back then I did not set affinities to physical cores only. May be worth another try.

Although I just noticed that I tried it with SMT turned off too and got the same results, so I doubt core affinites with it on and 50% usage would make any difference.
____________
Long live the sievers.

+ Encyclopaedia Metallum: The Metal Archives +

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137470 - Posted: 7 Feb 2020 | 23:37:19 UTC

Whoops.

Timings for 16K all-complex FFT length (16 cores, 1 worker): 0.14 ms. Throughput: 7306.25 iter/sec.

Timings for 16K all-complex FFT length (16 cores, 4 workers): 0.05, 0.06, 0.05, 0.06 ms. Throughput: 75110.17 iter/sec.

Timings for 16K all-complex FFT length (16 cores, 8 workers): 0.06, 0.06, 0.08, 0.07, 0.06, 0.06, 0.06, 0.06 ms. Throughput: 122487.72 iter/sec.

Timings for 16K all-complex FFT length (16 cores, 16 workers): 0.09, 0.09, 0.09, 0.09, 0.09, 0.10, 0.09, 0.10, 0.10, 0.10, 0.09, 0.09, 0.10, 0.10, 0.09, 0.10 ms. Throughput: 170700.31 iter/sec.

[Fri Feb 07 23:25:19 2020]
Timings for 18K all-complex FFT length (16 cores, 1 worker): 0.15 ms. Throughput: 6796.79 iter/sec.

Timings for 18K all-complex FFT length (16 cores, 4 workers): 0.06, 0.07, 0.07, 0.06 ms. Throughput: 59685.85 iter/sec.

Timings for 18K all-complex FFT length (16 cores, 8 workers): 0.07, 0.09, 0.08, 0.08, 0.08, 0.10, 0.08, 0.08 ms. Throughput: 97323.04 iter/sec.

Timings for 18K all-complex FFT length (16 cores, 16 workers): 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.12, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11 ms. Throughput: 142896.52 iter/sec.

This is always just a trade off isn't it? 1 core/wu might have a larger throughput number but the result will be slower to complete and therefore less 1st's?


____________

mackerelProject donor
Volunteer tester
Avatar
Send message
Joined: 2 Oct 08
Posts: 2324
ID: 29980
Credit: 405,106,300
RAC: 195,415
Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 5 primes in the 2019 Tour de PrimesFound 6 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (8,774,878)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (6,454,573)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,122,074)PPS LLR Emerald: Earned 50,000,000 credits (71,938,410)PSP LLR Jade: Earned 10,000,000 credits (15,223,714)SoB LLR Jade: Earned 10,000,000 credits (17,319,914)SR5 LLR Sapphire: Earned 20,000,000 credits (23,993,013)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Jade: Earned 10,000,000 credits (16,460,208)Woodall LLR Turquoise: Earned 5,000,000 credits (5,715,464)321 Sieve Jade: Earned 10,000,000 credits (18,014,408)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,626,419)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Sapphire: Earned 20,000,000 credits (21,918,894)GFN Emerald: Earned 50,000,000 credits (71,886,552)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 137474 - Posted: 7 Feb 2020 | 23:55:01 UTC - in response to Message 137470.

Whoops.

Those results aren't helpful for SoB, you forgot to change the FFT size it was testing. 16k and 18k are really tiny. Set it to 3200k for min and max, and see what results that give. You might also add 2 workers into the list of workers it tests, so it would be 1, 2, 4, 8, 16.

What you are looking for from a productivity perspective is higher iter/sec. However, if you want to also be "first" you might sacrifice some throughput for faster units by using a higher number of cores per worker/task.

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 137480 - Posted: 8 Feb 2020 | 1:19:31 UTC - in response to Message 137474.

Whoops.

Those results aren't helpful for SoB, you forgot to change the FFT size it was testing. 16k and 18k are really tiny. Set it to 3200k for min and max, and see what results that give. You might also add 2 workers into the list of workers it tests, so it would be 1, 2, 4, 8, 16.

What you are looking for from a productivity perspective is higher iter/sec. However, if you want to also be "first" you might sacrifice some throughput for faster units by using a higher number of cores per worker/task.


Like this?

Prime95 64-bit version 29.8, RdtscTiming=1
Timings for 3200K all-complex FFT length (16 cores, 1 worker): 2.19 ms. Throughput: 457.20 iter/sec.

Timings for 3200K all-complex FFT length (16 cores, 2 workers): 4.15, 4.38 ms. Throughput: 469.28 iter/sec.

Timings for 3200K all-complex FFT length (16 cores, 4 workers): 8.90, 8.81, 9.51, 9.50 ms. Throughput: 436.33 iter/sec.

Timings for 3200K all-complex FFT length (16 cores, 8 workers): 18.14, 18.51, 18.54, 18.02, 19.92, 19.99, 19.61, 19.88 ms. Throughput: 420.13 iter/sec.

Timings for 3200K all-complex FFT length (16 cores, 16 workers): 36.61, 39.55, 36.76, 37.01, 37.72, 37.72, 36.99, 37.00, 40.83, 40.14, 41.33, 39.23, 39.75, 39.64, 39.85, 39.68 ms. Throughput: 413.68 iter/sec.

So it looks to me like 2 wu's split across 16 cores is optimal?
Possible tweaking required if I want more 1st's (as I've done with my 6 core CPU's for the TDP challange. 3*2 didn't give me enough 1st's for my liking so I changed to 2*3.)



____________

Profile dannyridel
Avatar
Send message
Joined: 3 Feb 19
Posts: 230
ID: 1097922
Credit: 1,791,645
RAC: 1,750
321 LLR Bronze: Earned 10,000 credits (45,370)Cullen LLR Bronze: Earned 10,000 credits (18,311)ESP LLR Bronze: Earned 10,000 credits (25,105)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (22,373)PPS LLR Silver: Earned 100,000 credits (141,789)PSP LLR Bronze: Earned 10,000 credits (65,677)SR5 LLR Bronze: Earned 10,000 credits (48,432)SGS LLR Bronze: Earned 10,000 credits (10,178)TRP LLR Bronze: Earned 10,000 credits (39,419)Woodall LLR Bronze: Earned 10,000 credits (19,031)321 Sieve Silver: Earned 100,000 credits (173,207)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Gold: Earned 500,000 credits (552,844)AP 26/27 Bronze: Earned 10,000 credits (52,559)GFN Silver: Earned 100,000 credits (189,280)PSA Silver: Earned 100,000 credits (358,037)
Message 137488 - Posted: 8 Feb 2020 | 3:36:34 UTC - in response to Message 137480.

I think so, try it with actual SoB WU's after TdP.
____________
JonDan School Services
GFN-14: 50103906^16384+1
AP 21: 104383195353409757+142406036*23#*n for n=0..20

gratrix
Send message
Joined: 13 Dec 18
Posts: 3
ID: 1085267
Credit: 4,532,490
RAC: 20,611
SoB LLR Ruby: Earned 2,000,000 credits (4,509,556)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (22,935)
Message 138194 - Posted: 23 Feb 2020 | 0:16:19 UTC
Last modified: 23 Feb 2020 | 0:18:09 UTC

I've just got the 16 core (32 thread) AMD 1950X and am wondering the same. I've not really done any testing other than I briefly ran 1 x 32 threads, 2 x 16 threads and 2 x 8 threads to see how my temps looked, and 2 x 8 threads ran the most hot (~68C) so I'm taking that configuration to be doing the most computation and am thus using that for now. I've only just built my PC and yet to install decent RAM and do the XMP thing. I suppose that because the CPU has two chiplets I expect either 4 x 4 threads or 2 x 8 threads to be best bet?

Profile Chooka
Send message
Joined: 15 May 18
Posts: 106
ID: 1014486
Credit: 97,239,947
RAC: 86,633
Found 1 prime in the 2019 Tour de PrimesFound 5 primes in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (722,546)Cullen LLR Gold: Earned 500,000 credits (536,353)ESP LLR Gold: Earned 500,000 credits (521,539)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (519,336)PPS LLR Turquoise: Earned 5,000,000 credits (6,650,617)PSP LLR Gold: Earned 500,000 credits (545,010)SoB LLR Gold: Earned 500,000 credits (784,120)SR5 LLR Ruby: Earned 2,000,000 credits (2,079,221)SGS LLR Gold: Earned 500,000 credits (593,235)TRP LLR Gold: Earned 500,000 credits (526,734)Woodall LLR Gold: Earned 500,000 credits (539,481)321 Sieve Gold: Earned 500,000 credits (590,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,057,633)PPS Sieve Emerald: Earned 50,000,000 credits (57,296,887)AP 26/27 Ruby: Earned 2,000,000 credits (2,919,046)GFN Jade: Earned 10,000,000 credits (16,360,852)
Message 138241 - Posted: 23 Feb 2020 | 21:21:02 UTC

I’m thinking the same. I’ll need to do some testing but I think 2 * 8 will be the go. 4*4 will work but I’m still looking for a few 1st and I don’t think I’ll get many with 4*4.
You suffer the same fate as me... thermal throttling at 68 degrees. My system never stays below 67.
____________

gratrix
Send message
Joined: 13 Dec 18
Posts: 3
ID: 1085267
Credit: 4,532,490
RAC: 20,611
SoB LLR Ruby: Earned 2,000,000 credits (4,509,556)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (22,935)
Message 138247 - Posted: 23 Feb 2020 | 23:15:38 UTC

As I don't have my machine on all the time I'm going to stick with 2x8 so they finish as quick as reasonably possible yet still running hopefully efficiently, and should get a few firsts too :)

I've not overclocked anything, while SOB is running the CPU runs at 4000Mhz (40x100MHz), my board is an X570 Aorus Master.

KeithProject donor
Avatar
Send message
Joined: 8 Dec 13
Posts: 391
ID: 284516
Credit: 360,460,011
RAC: 243,107
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 3 primes in the 2019 Tour de PrimesFound 2 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,055,954)Cullen LLR Turquoise: Earned 5,000,000 credits (5,064,934)ESP LLR Turquoise: Earned 5,000,000 credits (5,005,551)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,002,124)PPS LLR Turquoise: Earned 5,000,000 credits (9,873,020)PSP LLR Turquoise: Earned 5,000,000 credits (5,032,097)SoB LLR Turquoise: Earned 5,000,000 credits (9,976,992)SR5 LLR Turquoise: Earned 5,000,000 credits (9,846,106)SGS LLR Turquoise: Earned 5,000,000 credits (5,012,861)TRP LLR Turquoise: Earned 5,000,000 credits (5,759,074)Woodall LLR Turquoise: Earned 5,000,000 credits (5,053,050)321 Sieve Jade: Earned 10,000,000 credits (10,120,432)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,111,958)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Emerald: Earned 50,000,000 credits (78,413,985)GFN Emerald: Earned 50,000,000 credits (93,673,159)PSA Silver: Earned 100,000 credits (442,843)
Message 138251 - Posted: 24 Feb 2020 | 0:07:08 UTC

gratrix, you have a 3950X as opposed to Chooka's 1950X. Both are 16core/32 thread CPU's, but due to architectural differences they will have vastly different results.

For SoB on the 3950X I would recommend trying 1 16 threaded task.
gratrix, you mentioned you did 1x32 and 2x16. That's using all the threads which may or may not have a performance impact on these AMD chips. So give 1x16 a try and see what happens.
I have a 3900X (12 core / 24 thread) and found that the best throughput was 1 12 threaded task instead of 2 6 threaded tasks.

Otherwise it would be best to see the other posts earlier in the thread for how you can test your 3950X for best throughput or best speed per task.
____________
My Primes
Badge Score: 2*1 + 4*2 + 6*12 + 7*1 + 9*2 + 10*1 = 117

gratrix
Send message
Joined: 13 Dec 18
Posts: 3
ID: 1085267
Credit: 4,532,490
RAC: 20,611
SoB LLR Ruby: Earned 2,000,000 credits (4,509,556)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (22,935)
Message 138271 - Posted: 24 Feb 2020 | 17:33:34 UTC
Last modified: 24 Feb 2020 | 17:35:20 UTC

Indeed I do have a 3950X :) sorry if I caused any confusion. What the best configuration for me was on my mind when I saw the thread pop up and failed to read the title properly.

Thanks for the advice, I will look into it.

I'll be quiet now :)

Post to thread

Message boards : Seventeen or Bust : AMD 1950X - SOB WU's

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2020 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.23, 1.59, 1.38
Generated 29 Mar 2020 | 5:33:08 UTC