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Message boards : Sieving : GPU slow, carry flag warning

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MaxAMD400
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Joined: 13 Mar 15
Posts: 6
ID: 384708
Credit: 441,152,169
RAC: 7
321 LLR Gold: Earned 500,000 credits (564,080)Cullen LLR Amethyst: Earned 1,000,000 credits (1,819,683)ESP LLR Amethyst: Earned 1,000,000 credits (1,413,257)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (189,674)PPS LLR Ruby: Earned 2,000,000 credits (2,459,122)PSP LLR Amethyst: Earned 1,000,000 credits (1,974,881)SoB LLR Turquoise: Earned 5,000,000 credits (7,292,839)SR5 LLR Silver: Earned 100,000 credits (419,920)SGS LLR Silver: Earned 100,000 credits (108,046)TRP LLR Amethyst: Earned 1,000,000 credits (1,587,773)Woodall LLR Gold: Earned 500,000 credits (878,253)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,682,921)PPS Sieve Double Silver: Earned 200,000,000 credits (342,985,766)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (113,993)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,630,327)AP 26/27 Ruby: Earned 2,000,000 credits (2,999,906)GFN Sapphire: Earned 20,000,000 credits (25,353,691)PSA Sapphire: Earned 20,000,000 credits (42,678,037)
Message 120417 - Posted: 10 Sep 2018 | 22:52:11 UTC

Hello everybody,

Is a Sapphire Radeon Pro Duo slower than an
INNO3D GeForce GTX 980 iCHILL HerculeZ X3 Air Boss ?

Sapphire Radeon Pro Duo ca.49.000/s (26,5P/day)
INNO3D GeForce GTX 980 iCHILL ca.133.500/s (69,5P/day)

start with

C:\GFN17\gfnsvocl_w64_2G 17 156570 156690


For the ATI GPUs I get this error message

C:\Users\MAX_29~1\AppData\Local\Temp\\OCL4016T3.cl:70:2: warning: No built-in carry flag support known, using plain C code #warning No built-in carry flag support known, using plain C code ^ 1 warning generated.


There can be mine PCI Express 3.0 x16 nVIDIA GeForce GT 650M (Acer) ca. 25.450/s (13.5P/day) keep up.

Why is the Sapphire Radeon Pro Duo so slow ?

Greetings from Germany
Thorsten

Profile Rafael
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Joined: 22 Oct 14
Posts: 857
ID: 370496
Credit: 304,459,431
RAC: 90,496
321 LLR Turquoise: Earned 5,000,000 credits (6,975,684)Cullen LLR Turquoise: Earned 5,000,000 credits (6,231,526)ESP LLR Turquoise: Earned 5,000,000 credits (6,103,479)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,182,588)PPS LLR Turquoise: Earned 5,000,000 credits (6,346,543)PSP LLR Turquoise: Earned 5,000,000 credits (6,252,934)SoB LLR Turquoise: Earned 5,000,000 credits (6,187,450)SR5 LLR Turquoise: Earned 5,000,000 credits (6,764,477)SGS LLR Turquoise: Earned 5,000,000 credits (6,557,795)TRP LLR Turquoise: Earned 5,000,000 credits (6,155,477)Woodall LLR Turquoise: Earned 5,000,000 credits (6,108,237)321 Sieve Ruby: Earned 2,000,000 credits (2,977,459)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,037,204)PPS Sieve Jade: Earned 10,000,000 credits (10,305,147)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,053)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,030,160)AP 26/27 Jade: Earned 10,000,000 credits (10,253,048)GFN Sapphire: Earned 20,000,000 credits (26,232,734)PSA Double Bronze: Earned 100,000,000 credits (170,758,062)
Message 120418 - Posted: 10 Sep 2018 | 23:09:55 UTC - in response to Message 120417.
Last modified: 10 Sep 2018 | 23:10:18 UTC

Why is the Sapphire Radeon Pro Duo so slow ?

Greetings from Germany
Thorsten

It's partially because you're not using the B(1-13) argument. Lower B have lower performance, whereas higher B offer A LOT more performance (up to a point, depending on the card) at the cost of screen lag. The app uses B7 as the default, but you can play with it to squeeze more out of your card. Try B9 or B10 for both cards, see how that goes.

MaxAMD400
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Joined: 13 Mar 15
Posts: 6
ID: 384708
Credit: 441,152,169
RAC: 7
321 LLR Gold: Earned 500,000 credits (564,080)Cullen LLR Amethyst: Earned 1,000,000 credits (1,819,683)ESP LLR Amethyst: Earned 1,000,000 credits (1,413,257)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (189,674)PPS LLR Ruby: Earned 2,000,000 credits (2,459,122)PSP LLR Amethyst: Earned 1,000,000 credits (1,974,881)SoB LLR Turquoise: Earned 5,000,000 credits (7,292,839)SR5 LLR Silver: Earned 100,000 credits (419,920)SGS LLR Silver: Earned 100,000 credits (108,046)TRP LLR Amethyst: Earned 1,000,000 credits (1,587,773)Woodall LLR Gold: Earned 500,000 credits (878,253)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,682,921)PPS Sieve Double Silver: Earned 200,000,000 credits (342,985,766)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (113,993)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,630,327)AP 26/27 Ruby: Earned 2,000,000 credits (2,999,906)GFN Sapphire: Earned 20,000,000 credits (25,353,691)PSA Sapphire: Earned 20,000,000 credits (42,678,037)
Message 120420 - Posted: 10 Sep 2018 | 23:37:31 UTC

Hee thank you for the quick response

C:\GFN17\gfnsvocl_w64_2G 17 156690 156691 B10


Result: ca. 149.500 (78,5P/day)

Thank you very much

Profile PenguinProject donor
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Joined: 14 Sep 12
Posts: 539
ID: 172547
Credit: 1,211,704,912
RAC: 861,277
Discovered 3 mega primesEliminated 1 conjecture "k"Found 1 prime in the 2019 Tour de PrimesFound 15 primes in the 2020 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,211,391)Cullen LLR Ruby: Earned 2,000,000 credits (2,073,913)ESP LLR Jade: Earned 10,000,000 credits (10,390,853)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Sapphire: Earned 20,000,000 credits (22,727,857)PSP LLR Jade: Earned 10,000,000 credits (10,276,533)SoB LLR Ruby: Earned 2,000,000 credits (2,092,713)SR5 LLR Jade: Earned 10,000,000 credits (12,619,323)SGS LLR Turquoise: Earned 5,000,000 credits (9,810,470)TRP LLR Turquoise: Earned 5,000,000 credits (5,511,951)Woodall LLR Ruby: Earned 2,000,000 credits (2,289,700)321 Sieve Jade: Earned 10,000,000 credits (10,170,442)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Double Bronze: Earned 100,000,000 credits (106,931,491)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (67,522,143)GFN Double Silver: Earned 200,000,000 credits (265,776,395)PSA Double Gold: Earned 500,000,000 credits (666,025,256)
Message 120472 - Posted: 13 Sep 2018 | 0:29:07 UTC - in response to Message 120420.

Hee thank you for the quick response

C:\GFN17\gfnsvocl_w64_2G 17 156690 156691 B10


Result: ca. 149.500 (78,5P/day)

Thank you very much


Don't forget to use the W1 parameter also which will reduce CPU usage. Works on each GPU I've tried it on where it could.

Profile Rafael
Volunteer tester
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Joined: 22 Oct 14
Posts: 857
ID: 370496
Credit: 304,459,431
RAC: 90,496
321 LLR Turquoise: Earned 5,000,000 credits (6,975,684)Cullen LLR Turquoise: Earned 5,000,000 credits (6,231,526)ESP LLR Turquoise: Earned 5,000,000 credits (6,103,479)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,182,588)PPS LLR Turquoise: Earned 5,000,000 credits (6,346,543)PSP LLR Turquoise: Earned 5,000,000 credits (6,252,934)SoB LLR Turquoise: Earned 5,000,000 credits (6,187,450)SR5 LLR Turquoise: Earned 5,000,000 credits (6,764,477)SGS LLR Turquoise: Earned 5,000,000 credits (6,557,795)TRP LLR Turquoise: Earned 5,000,000 credits (6,155,477)Woodall LLR Turquoise: Earned 5,000,000 credits (6,108,237)321 Sieve Ruby: Earned 2,000,000 credits (2,977,459)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,037,204)PPS Sieve Jade: Earned 10,000,000 credits (10,305,147)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,053)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,030,160)AP 26/27 Jade: Earned 10,000,000 credits (10,253,048)GFN Sapphire: Earned 20,000,000 credits (26,232,734)PSA Double Bronze: Earned 100,000,000 credits (170,758,062)
Message 120474 - Posted: 13 Sep 2018 | 2:01:50 UTC - in response to Message 120472.

Hee thank you for the quick response

C:\GFN17\gfnsvocl_w64_2G 17 156690 156691 B10


Result: ca. 149.500 (78,5P/day)

Thank you very much


Don't forget to use the W1 parameter also which will reduce CPU usage. Works on each GPU I've tried it on where it could.

*For Nvidia cards only.

**For "high" N values, it won't do anything for 15~17 (at the very least).

Profile PenguinProject donor
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Joined: 14 Sep 12
Posts: 539
ID: 172547
Credit: 1,211,704,912
RAC: 861,277
Discovered 3 mega primesEliminated 1 conjecture "k"Found 1 prime in the 2019 Tour de PrimesFound 15 primes in the 2020 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,211,391)Cullen LLR Ruby: Earned 2,000,000 credits (2,073,913)ESP LLR Jade: Earned 10,000,000 credits (10,390,853)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Sapphire: Earned 20,000,000 credits (22,727,857)PSP LLR Jade: Earned 10,000,000 credits (10,276,533)SoB LLR Ruby: Earned 2,000,000 credits (2,092,713)SR5 LLR Jade: Earned 10,000,000 credits (12,619,323)SGS LLR Turquoise: Earned 5,000,000 credits (9,810,470)TRP LLR Turquoise: Earned 5,000,000 credits (5,511,951)Woodall LLR Ruby: Earned 2,000,000 credits (2,289,700)321 Sieve Jade: Earned 10,000,000 credits (10,170,442)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Double Bronze: Earned 100,000,000 credits (106,931,491)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (67,522,143)GFN Double Silver: Earned 200,000,000 credits (265,776,395)PSA Double Gold: Earned 500,000,000 credits (666,025,256)
Message 120483 - Posted: 13 Sep 2018 | 13:38:17 UTC - in response to Message 120474.

Hee thank you for the quick response

C:\GFN17\gfnsvocl_w64_2G 17 156690 156691 B10


Result: ca. 149.500 (78,5P/day)

Thank you very much


Don't forget to use the W1 parameter also which will reduce CPU usage. Works on each GPU I've tried it on where it could.

*For Nvidia cards only.

**For "high" N values, it won't do anything for 15~17 (at the very least).


I know it says Nvidia only but it also works for my Intel. And yes about the N values. Those use more CPU regardless of the w1 parameter or not. I did see a slight improvement for GFN18, those it was minor compared to GFN20-GFN22. The faster your CPU the less CPU time it uses from what I have seen. My Intel cores use less % of CPU then my AMD cores across the board whether its with the w1 parameter or not.

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Joined: 25 Nov 09
Posts: 2868
ID: 50683
Credit: 55,479,372
RAC: 17,205
Eliminated 1 conjecture "k"Found 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Turquoise: Earned 5,000,000 credits (5,561,410)PSP LLR Silver: Earned 100,000 credits (104,385)SoB LLR Silver: Earned 100,000 credits (106,117)SR5 LLR Silver: Earned 100,000 credits (139,802)SGS LLR Amethyst: Earned 1,000,000 credits (1,321,855)TRP LLR Silver: Earned 100,000 credits (122,712)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve Silver: Earned 100,000 credits (104,900)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,599)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (515,556)PPS Sieve Jade: Earned 10,000,000 credits (11,363,809)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,579,917)GFN Sapphire: Earned 20,000,000 credits (23,317,420)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 130629 - Posted: 25 Jun 2019 | 9:00:24 UTC - in response to Message 120483.

Build Log (211 bytes):
C:\Users\Omega\AppData\Local\Temp\\OCL2460T3.cl:70:2: warning: No built-in carry flag support known, using plain C code
#warning No built-in carry flag support known, using plain C code
^
1 warning generated.


I got same error but I am using B value.
Also I got same error on Windows 7 or 10, same error using Radeon 290X or Radeon 580X
And last , maybe important : that error doesnot show until you reach around 8000P as start point for sieving, anything above throw error: Everything below works perfect.
____________
314187728^131072+1 GENERALIZED FERMAT :)
93*10^1029523-1 REPDIGIT PRIME
31*332^367560+1 CRUS PRIME
Proud member of team Aggie The Pew. Go Aggie!

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Message boards : Sieving : GPU slow, carry flag warning

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