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Message boards : General discussion : Why did we stop the Wall–Sun–Sun prime / Fibonacci–Wieferich prime search?

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Profile Jordan Romaidis
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Joined: 11 May 17
Posts: 255
ID: 880615
Credit: 722,249,911
RAC: 367,386
Discovered 4 mega primesEliminated 1 conjecture "k"Discovered 1 AP26Found 1 prime in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de PrimesFound 2 primes in the 2020 Tour de PrimesFound 1 mega prime in the 2020 Tour de PrimesFound 1 prime in the 2020 Tour de Primes Mountain StageFound 1 mega prime in the 2020 Tour de Primes Mountain StageFound 1 prime in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,014,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,080,460)ESP LLR Gold: Earned 500,000 credits (502,799)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,000,054)PPS LLR Emerald: Earned 50,000,000 credits (98,884,636)PSP LLR Amethyst: Earned 1,000,000 credits (1,092,773)SoB LLR Sapphire: Earned 20,000,000 credits (40,278,369)SR5 LLR Jade: Earned 10,000,000 credits (17,734,011)SGS LLR Jade: Earned 10,000,000 credits (19,440,453)TRP LLR Gold: Earned 500,000 credits (691,677)Woodall LLR Jade: Earned 10,000,000 credits (15,028,246)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,084,376)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,606,749)PPS Sieve Sapphire: Earned 20,000,000 credits (23,323,949)AP 26/27 Double Silver: Earned 200,000,000 credits (242,458,710)GFN Double Bronze: Earned 100,000,000 credits (152,348,256)WW Sapphire: Earned 20,000,000 credits (22,668,000)PSA Emerald: Earned 50,000,000 credits (53,011,665)
Message 121009 - Posted: 10 Oct 2018 | 23:25:36 UTC

According to Wiki:

"In December 2011, another search was started by the PrimeGrid project, however it was suspended in May of 2017."

Wondering why it was suspended?

Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,132,712)Cullen LLR Turquoise: Earned 5,000,000 credits (5,038,114)ESP LLR Turquoise: Earned 5,000,000 credits (6,177,890)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,614,303)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (7,956,186)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,742,634)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Turquoise: Earned 5,000,000 credits (5,032,821)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (78,031,938)WW Sapphire: Earned 20,000,000 credits (38,840,000)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 121011 - Posted: 11 Oct 2018 | 0:01:56 UTC - in response to Message 121009.

According to Wiki:

"In December 2011, another search was started by the PrimeGrid project, however it was suspended in May of 2017."

Wondering why it was suspended?


It's been suspended because it doesn't produce a "residue" or checksum, so it's very difficult to double check.

It's a GPU app, and GPUs tend to be error prone. Many "finds" turned out to be errors. We have no idea if we missed anything.

The plan is to get the app to produce a good residue, and then move it to the BOINC server, and restart from the beginning. But there hasn't been much action lately.
____________
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Credit: 798,578,819
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Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,477,467)Cullen LLR Gold: Earned 500,000 credits (776,297)ESP LLR Ruby: Earned 2,000,000 credits (3,433,680)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,268,490)PPS LLR Sapphire: Earned 20,000,000 credits (27,632,990)PSP LLR Turquoise: Earned 5,000,000 credits (6,587,988)SoB LLR Sapphire: Earned 20,000,000 credits (36,112,259)SR5 LLR Turquoise: Earned 5,000,000 credits (6,110,877)SGS LLR Ruby: Earned 2,000,000 credits (3,486,325)TRP LLR Turquoise: Earned 5,000,000 credits (7,070,795)Woodall LLR Amethyst: Earned 1,000,000 credits (1,693,614)321 Sieve (suspended) Emerald: Earned 50,000,000 credits (50,256,050)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,571,178)Generalized Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (50,009,610)PPS Sieve Double Silver: Earned 200,000,000 credits (397,771,879)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,165,888)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,071,454)AP 26/27 Turquoise: Earned 5,000,000 credits (6,616,128)GFN Emerald: Earned 50,000,000 credits (53,771,465)WW Gold: Earned 500,000 credits (932,000)PSA Double Bronze: Earned 100,000,000 credits (102,762,384)
Message 121012 - Posted: 11 Oct 2018 | 4:38:06 UTC - in response to Message 121011.

Would it make sense to combine 2 GPU apps with different execution profiles into 1 binary so that the GPU doesn't sit idle while the CPU and PCIe bus are saturated during data transfers? That question is worth an experiment.

Message boards : General discussion : Why did we stop the Wall–Sun–Sun prime / Fibonacci–Wieferich prime search?

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