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Message boards : Generalized Fermat Prime Search : GFN CPU task L3 Cache size?

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GDB
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Joined: 15 Nov 11
Posts: 304
ID: 119185
Credit: 4,278,573,021
RAC: 1,774,246
Discovered 2 mega primesFound 1 prime in the 2022 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (15,257,514)Cullen LLR Turquoise: Earned 5,000,000 credits (6,761,853)ESP LLR Turquoise: Earned 5,000,000 credits (5,600,055)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (7,659,159)PPS LLR Sapphire: Earned 20,000,000 credits (22,331,298)PSP LLR Turquoise: Earned 5,000,000 credits (8,038,982)SoB LLR Sapphire: Earned 20,000,000 credits (24,274,645)SR5 LLR Turquoise: Earned 5,000,000 credits (6,839,538)SGS LLR Turquoise: Earned 5,000,000 credits (5,824,280)TRP LLR Jade: Earned 10,000,000 credits (12,137,231)Woodall LLR Turquoise: Earned 5,000,000 credits (5,099,498)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,834,160)Cullen/Woodall Sieve Double Silver: Earned 200,000,000 credits (245,399,205)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (11,373,349)PPS Sieve Double Gold: Earned 500,000,000 credits (544,231,326)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (4,080,038)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,803,337)AP 26/27 Double Silver: Earned 200,000,000 credits (244,561,070)GFN Double Gold: Earned 500,000,000 credits (732,258,230)WW (retired) Double Gold: Earned 500,000,000 credits (500,196,000)PSA Double Amethyst: Earned 1,000,000,000 credits (1,863,027,834)
Message 146970 - Posted: 23 Dec 2020 | 2:53:49 UTC

Is there any published L3 cache usage for GFN CPU tasks, like LLR tasks publish their memory usage?
____________

ID: 146970 | Report as offensive
Yves GallotProject donor
Volunteer developer
Project scientist
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Joined: 19 Aug 12
Posts: 842
ID: 164101
Credit: 306,514,179
RAC: 5,338
GFN Double Silver: Earned 200,000,000 credits (306,514,179)
Message 146975 - Posted: 23 Dec 2020 | 8:10:04 UTC - in response to Message 146970.

Is there any published L3 cache usage for GFN CPU tasks, like LLR tasks publish their memory usage?

fma/avx/sse4/sse2 transforms, GFN-n: 2n * size of FP64
    GFN-21: 16M

fmai/avxi/sse4i/sse2i transforms, GFN-n: 2n+1 * size of FP64

    GFN-16: 1M
    GFN-17: 2M
    GFN-18: 4M
    GFN-19: 8M
    GFN-20: 16M

ID: 146975 | Report as offensive
Profile dannyridel
Volunteer tester
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Joined: 3 Feb 19
Posts: 1002
ID: 1097922
Credit: 97,187,113
RAC: 305,096
Discovered 1 mega primeFound 1 prime in the 2023 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,064,583)Cullen LLR Amethyst: Earned 1,000,000 credits (1,484,092)ESP LLR Gold: Earned 500,000 credits (517,207)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,703,786)PPS LLR Ruby: Earned 2,000,000 credits (4,514,096)PSP LLR Ruby: Earned 2,000,000 credits (4,106,368)SoB LLR Ruby: Earned 2,000,000 credits (3,168,356)SR5 LLR Amethyst: Earned 1,000,000 credits (1,243,601)SGS LLR Amethyst: Earned 1,000,000 credits (1,098,741)TRP LLR Amethyst: Earned 1,000,000 credits (1,198,491)Woodall LLR Amethyst: Earned 1,000,000 credits (1,156,439)321 Sieve (suspended) Gold: Earned 500,000 credits (506,814)Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,136,717)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Turquoise: Earned 5,000,000 credits (6,923,574)AP 26/27 Turquoise: Earned 5,000,000 credits (7,972,796)GFN Sapphire: Earned 20,000,000 credits (34,852,386)WW (retired) Sapphire: Earned 20,000,000 credits (21,136,000)PSA Silver: Earned 100,000 credits (373,034)
Message 146976 - Posted: 23 Dec 2020 | 8:33:56 UTC - in response to Message 146975.

Is there any published L3 cache usage for GFN CPU tasks, like LLR tasks publish their memory usage?

fma/avx/sse4/sse2 transforms, GFN-n: 2n * size of FP64
    GFN-21: 16M

fmai/avxi/sse4i/sse2i transforms, GFN-n: 2n+1 * size of FP64

    GFN-16: 1M
    GFN-17: 2M
    GFN-18: 4M
    GFN-19: 8M
    GFN-20: 16M


Ahh that explains why GFN20's on a 3800xt takes 6 days when running 8 concurrently and 2days when running 2 concurrently.
____________
My lucky number is 6219*2^3374198+1


ID: 146976 | Report as offensive

Message boards : Generalized Fermat Prime Search : GFN CPU task L3 Cache size?

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