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Old 2022-04-28, 21:17   #56
VBCurtis
 
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"Curtis"
Feb 2005
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Not really; you'll have a slightly higher duplicate rate, meaning you may need an extra 1-3M raw relations to get the matrix size you expect. Sieve time will barely change.
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Old 2022-04-29, 17:37   #57
EdH
 
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"Ed Hall"
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Here's the c165:
Code:
N = 309... <165 digits>
tasks.I = 14
tasks.lim0 = 60000000
tasks.lim1 = 40000000
tasks.lpb0 = 31
tasks.lpb1 = 31
tasks.qmin = 7000000
tasks.sieve.adjust_strategy = 2
tasks.sieve.lambda0 = 1.83
tasks.sieve.mfb0 = 58
tasks.sieve.mfb1 = 89
tasks.sieve.ncurves0 = 18
tasks.sieve.ncurves1 = 10
tasks.sieve.qrange = 5000
Polynomial Selection (size optimized): Total time: 523377
Polynomial Selection (root optimized): Total time: 35527
Lattice Sieving: Total time: 4.96142e+06s (all clients used 4 threads)
Lattice Sieving: Total number of relations: 175009615
Found 122644730 unique, 53361072 duplicate, and 0 bad relations.
cownoise Best MurphyE for polynomial is 7.58493957e-13
Although I have another c165 available, I'm going to move back to working on the easier Aliquot sequences list for a little bit, since the number of sequences is diminishing and I want to try to make sure it doesn't get too low.
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Old 2022-04-29, 20:50   #58
VBCurtis
 
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If I've got the scaling of poly score vs sieve time, looks like 88 is quicker.
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Old 2022-04-29, 21:08   #59
EdH
 
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Quote:
Originally Posted by VBCurtis View Post
If I've got the scaling of poly score vs sieve time, looks like 88 is quicker.
Not at all empirical, but I had the feeling this was more difficult. I encountered a CADO-NFS filtering crash (possibly the strategy 2 trouble you mentioned?) and Msieve LA came back with over 32.5 hours ETA with 40 threads. I should probably save a copy of the Msieve log just for later perusal. (I wonder if I should see if a Colab instance would give me a good GPU and what it might show for ETA. . .)

ETA: I'm planning to try the Colab session, but the compression and upload times, as well as Colab inialization, are going to take quite a while, so I'm not sure there's an advantage.

ETA2: After nearly an hour and nowhere near completion, I gave up on my msieve.dat.mat.tbz upload to Google Drive for a Colab test. It had already taken over a half-hour to copy and compress it.

Last fiddled with by EdH on 2022-04-29 at 22:25 Reason: why do I keep writing startegey?. . .
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