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Message boards : AP26 - AP27 Search : CPU speeds vs GPU for Oktoberfest Challenge

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Profile mfl0pProject donor
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Joined: 5 Apr 09
Posts: 195
ID: 38042
Credit: 658,859,340
RAC: 275,824
Discovered 2 AP26sFound 1 prime in the 2019 Tour de PrimesESP LLR Ruby: Earned 2,000,000 credits (3,689,780)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,696,299)PPS LLR Turquoise: Earned 5,000,000 credits (9,213,746)PSP LLR Bronze: Earned 10,000 credits (26,222)SoB LLR Turquoise: Earned 5,000,000 credits (6,906,699)TRP LLR Amethyst: Earned 1,000,000 credits (1,704,136)Woodall LLR Silver: Earned 100,000 credits (218,868)PPS Sieve Sapphire: Earned 20,000,000 credits (30,517,663)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (47,384)TRP Sieve (suspended) Bronze: Earned 10,000 credits (49,560)AP 26/27 Double Gold: Earned 500,000,000 credits (558,897,095)GFN Sapphire: Earned 20,000,000 credits (45,426,073)PSA Silver: Earned 100,000 credits (456,000)
Message 132044 - Posted: 14 Aug 2019 | 2:09:17 UTC
Last modified: 14 Aug 2019 | 2:34:07 UTC

In preparing for the AP27 Oktoberfest Challenge some of you may be wondering "How many more points can I get by running my CPU also?" I did some testing and here are the results.

Core i7 7700k Kaby Lake 4 core
completes 4 workunits in about 47000 seconds
equivalent to 1 workunit done every 11750 seconds

Core i7 3770k Ivy Bridge 4 core
completes 4 workunits in about 62000 seconds
equivalent to 1 workunit done every 15500 seconds

Ok, now let's compare these CPUs to a 5+ year old Maxwell generation Nvidia GTX 750ti. Not exactly a high end GPU, but very power efficient when released.
It completes a workunit in 6800 seconds.
So, as you see the lowly 750ti is more than twice as fast as the Ivy Bridge CPU and still much faster than even the Kaby Lake!

Newer GPUs such as RTX 2080 Ti can be over 20 times faster than the Kaby Lake and the fastest current GPU, a Tesla V100 is over 45 times faster!

DarrylProject donor
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Joined: 21 Mar 09
Posts: 85
ID: 37210
Credit: 319,021,958
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Found 1 prime in the 2019 Tour de Primes321 LLR Gold: Earned 500,000 credits (503,464)Cullen LLR Silver: Earned 100,000 credits (481,961)ESP LLR Gold: Earned 500,000 credits (515,497)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (527,019)PPS LLR Jade: Earned 10,000,000 credits (10,004,789)PSP LLR Gold: Earned 500,000 credits (653,291)SoB LLR Gold: Earned 500,000 credits (538,748)SR5 LLR Ruby: Earned 2,000,000 credits (4,283,917)SGS LLR Jade: Earned 10,000,000 credits (17,711,020)TRP LLR Gold: Earned 500,000 credits (506,533)Woodall LLR Gold: Earned 500,000 credits (536,003)321 Sieve Turquoise: Earned 5,000,000 credits (8,644,517)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (52,021,564)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,134,887)PPS Sieve Emerald: Earned 50,000,000 credits (95,413,156)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,761,921)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,020,224)AP 26/27 Double Bronze: Earned 100,000,000 credits (100,055,458)GFN Jade: Earned 10,000,000 credits (14,715,119)
Message 132046 - Posted: 14 Aug 2019 | 10:51:45 UTC - in response to Message 132044.

I recall someone (perhaps Michael) once said, in another post about using CPUs for challenges where GPUs can run the workunits; "It's like bringing a knife to a gunfight". These numbers pretty well demonstrate that :)
____________

Profile AzmodesProject donor
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ID: 479275
Credit: 1,307,240,789
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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 Silver: Earned 100,000 credits (402,418)Cullen LLR Bronze: Earned 10,000 credits (29,920)ESP LLR Bronze: Earned 10,000 credits (30,791)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (33,221)PPS LLR Turquoise: Earned 5,000,000 credits (5,008,095)PSP LLR Bronze: Earned 10,000 credits (36,061)SoB LLR Jade: Earned 10,000,000 credits (10,194,347)SR5 LLR Amethyst: Earned 1,000,000 credits (1,783,647)SGS LLR Gold: Earned 500,000 credits (609,081)TRP LLR Bronze: Earned 10,000 credits (71,189)Woodall LLR Gold: Earned 500,000 credits (524,564)321 Sieve Amethyst: Earned 1,000,000 credits (1,444,818)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,919,526)PPS Sieve Double Silver: Earned 200,000,000 credits (241,457,988)TRP Sieve (suspended) Bronze: Earned 10,000 credits (39,046)AP 26/27 Emerald: Earned 50,000,000 credits (79,501,552)GFN Double Bronze: Earned 100,000,000 credits (101,309,500)PSA Double Gold: Earned 500,000,000 credits (835,845,025)
Message 132052 - Posted: 14 Aug 2019 | 21:17:46 UTC

When I threw my 1950X at the AP challenge last year, it took a bit over 18 hours for one task. That's with HT on (pretty sure I established that it does help a bit for AP), so if you have all 32 threads loaded, it amounted to one task every 35 minutes, or close to a GTX 980 in throughput. Not too shabby.
____________
Long live the sievers.

Profile RobishProject donor
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Discovered the World's First AP27!!!Discovered 8 mega primesDiscovered 1 AP272018 Tour de Primes largest primeFound 4 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,232,081)Cullen LLR Turquoise: Earned 5,000,000 credits (8,142,092)ESP LLR Turquoise: Earned 5,000,000 credits (6,393,953)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,466,498)PPS LLR Sapphire: Earned 20,000,000 credits (31,504,951)PSP LLR Turquoise: Earned 5,000,000 credits (5,053,061)SoB LLR Sapphire: Earned 20,000,000 credits (34,998,007)SR5 LLR Turquoise: Earned 5,000,000 credits (5,095,601)SGS LLR Turquoise: Earned 5,000,000 credits (5,026,031)TRP LLR Jade: Earned 10,000,000 credits (12,088,272)Woodall LLR Turquoise: Earned 5,000,000 credits (5,062,771)321 Sieve Turquoise: Earned 5,000,000 credits (5,025,452)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,892,369)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,515,338)PPS Sieve Double Gold: Earned 500,000,000 credits (777,982,977)TRP Sieve (suspended) Silver: Earned 100,000 credits (121,416)AP 26/27 Emerald: Earned 50,000,000 credits (51,750,400)GFN Double Amethyst: Earned 1,000,000,000 credits (1,988,690,912)
Message 132053 - Posted: 14 Aug 2019 | 22:08:51 UTC - in response to Message 132052.
Last modified: 14 Aug 2019 | 22:09:52 UTC

When I threw my 1950X at the AP challenge last year, it took a bit over 18 hours for one task. That's with HT on (pretty sure I established that it does help a bit for AP), so if you have all 32 threads loaded, it amounted to one task every 35 minutes, or close to a GTX 980 in throughput. Not too shabby.


Yeah I was thinking just that. Bring 32 knives to the gunfight :)

Still dead probably but a few might land home :)
____________
My lucky number's 10590941048576+1 and 5641491616384+1 (GFN-14 Consecutive Prime)

Profile mfl0pProject donor
Volunteer developer
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Joined: 5 Apr 09
Posts: 195
ID: 38042
Credit: 658,859,340
RAC: 275,824
Discovered 2 AP26sFound 1 prime in the 2019 Tour de PrimesESP LLR Ruby: Earned 2,000,000 credits (3,689,780)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,696,299)PPS LLR Turquoise: Earned 5,000,000 credits (9,213,746)PSP LLR Bronze: Earned 10,000 credits (26,222)SoB LLR Turquoise: Earned 5,000,000 credits (6,906,699)TRP LLR Amethyst: Earned 1,000,000 credits (1,704,136)Woodall LLR Silver: Earned 100,000 credits (218,868)PPS Sieve Sapphire: Earned 20,000,000 credits (30,517,663)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (47,384)TRP Sieve (suspended) Bronze: Earned 10,000 credits (49,560)AP 26/27 Double Gold: Earned 500,000,000 credits (558,897,095)GFN Sapphire: Earned 20,000,000 credits (45,426,073)PSA Silver: Earned 100,000 credits (456,000)
Message 132094 - Posted: 17 Aug 2019 | 23:29:02 UTC - in response to Message 132083.

We can HT AP?


No, you cannot multithread the AP CPU app.

Miklos M.
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Joined: 14 Apr 12
Posts: 315
ID: 138455
Credit: 6,048,522,835
RAC: 2,378,483
Discovered 1 mega prime321 LLR Amethyst: Earned 1,000,000 credits (1,192,044)Cullen LLR Gold: Earned 500,000 credits (800,070)ESP LLR Amethyst: Earned 1,000,000 credits (1,357,780)PPS LLR Ruby: Earned 2,000,000 credits (4,968,754)SoB LLR Gold: Earned 500,000 credits (651,117)SR5 LLR Amethyst: Earned 1,000,000 credits (1,373,362)SGS LLR Amethyst: Earned 1,000,000 credits (1,258,223)TRP LLR Amethyst: Earned 1,000,000 credits (1,834,433)Woodall LLR Gold: Earned 500,000 credits (624,562)321 Sieve Jade: Earned 10,000,000 credits (12,664,262)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,036,945)Generalized Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,631,931)PPS Sieve Double Turquoise: Earned 5,000,000,000 credits (5,778,494,038)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (46,622,519)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (32,704,392)AP 26/27 Sapphire: Earned 20,000,000 credits (29,934,372)GFN Sapphire: Earned 20,000,000 credits (46,397,627)
Message 133076 - Posted: 21 Sep 2019 | 14:37:07 UTC

Looks like my dual 2080TIis take about 8 minutes per unit, while the cpu, although it is a fast one will take about 15+ hours.
The dual 1080 Ti's Double on the gpu compared to the 2080Ti's.

Miklos M.
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Joined: 14 Apr 12
Posts: 315
ID: 138455
Credit: 6,048,522,835
RAC: 2,378,483
Discovered 1 mega prime321 LLR Amethyst: Earned 1,000,000 credits (1,192,044)Cullen LLR Gold: Earned 500,000 credits (800,070)ESP LLR Amethyst: Earned 1,000,000 credits (1,357,780)PPS LLR Ruby: Earned 2,000,000 credits (4,968,754)SoB LLR Gold: Earned 500,000 credits (651,117)SR5 LLR Amethyst: Earned 1,000,000 credits (1,373,362)SGS LLR Amethyst: Earned 1,000,000 credits (1,258,223)TRP LLR Amethyst: Earned 1,000,000 credits (1,834,433)Woodall LLR Gold: Earned 500,000 credits (624,562)321 Sieve Jade: Earned 10,000,000 credits (12,664,262)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,036,945)Generalized Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,631,931)PPS Sieve Double Turquoise: Earned 5,000,000,000 credits (5,778,494,038)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (46,622,519)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (32,704,392)AP 26/27 Sapphire: Earned 20,000,000 credits (29,934,372)GFN Sapphire: Earned 20,000,000 credits (46,397,627)
Message 133116 - Posted: 22 Sep 2019 | 14:50:35 UTC

I am wondering why after nearly 26 hours of running on 4 cpu's the Octoberfest why the elapsed time indicates only 50% of the total hours ran? Maybe the cpu's are not running at more than 50% effort?

KeithProject donor
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Joined: 8 Dec 13
Posts: 364
ID: 284516
Credit: 307,096,985
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Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 3 primes in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (3,905,927)Cullen LLR Turquoise: Earned 5,000,000 credits (5,009,911)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 (6,002,760)PSP LLR Ruby: Earned 2,000,000 credits (2,436,657)SoB LLR Turquoise: Earned 5,000,000 credits (6,751,021)SR5 LLR Turquoise: Earned 5,000,000 credits (5,014,727)SGS LLR Turquoise: Earned 5,000,000 credits (5,009,588)TRP LLR Turquoise: Earned 5,000,000 credits (5,759,074)Woodall LLR Turquoise: Earned 5,000,000 credits (5,053,050)321 Sieve Turquoise: Earned 5,000,000 credits (5,002,887)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 (63,758,110)GFN Emerald: Earned 50,000,000 credits (75,814,441)PSA Silver: Earned 100,000 credits (442,843)
Message 133117 - Posted: 22 Sep 2019 | 14:56:23 UTC - in response to Message 133116.

I am wondering why after nearly 26 hours of running on 4 cpu's the Octoberfest why the elapsed time indicates only 50% of the total hours ran? Maybe the cpu's are not running at more than 50% effort?


Go to Options > Computing Preferences in the BOINC Manager.
Check the value for "Use at most X% of CPU time". That value should be at 100 for the best performance. You probably have it set to 50.
____________
My Primes
Badge Score: 2*1 + 4*2 + 5*2 + 6*11 + 9*2 + 10*1 = 114

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Message boards : AP26 - AP27 Search : CPU speeds vs GPU for Oktoberfest Challenge

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