Reservations

[feromant]

mmff can't be used for such N and k, because of the bit depth of kernels.

mmff v0.28 handles divisors of size up to 252 bits. For the given range will be used by the kernels mfaktc_barrett224_F160_191gs and mfaktc_barrett236_F160_191gs.

[rogue]

Originally Posted by ET_

10003-10999 50000000 269000000          5913 days  with ppsieve_cuda & pfgw
14501-14999 30000000 70000000            640 days  with ppsieve_cuda & pfgw
80001-80999 80000 100000                 150 days  with ppsieve_cuda & pfgw
114000-119999 40000 99999                 12 years with ppsieve_cuda and pfgw
120001-129999 30000 40000                  4 years with ppsieve_cuda & pfgw
130001-139999 20000 30000                  5 years with ppsieve_cuda & pfgw
160001-169999 15000 20000                  3 years with ppsieve_cuda & pfgw
180000 15000 30000                no data available
180001-181742 13000 30000         no data available
181744-189999 13000 30000         no data available

For these is there a limit for k where ppsieve is slower than fermfact?

[ET_]

Originally Posted by feromant

mmff v0.28 handles divisors of size up to 252 bits. For the given range will be used by the kernels mfaktc_barrett224_F160_191gs and mfaktc_barrett236_F160_191gs.

I should definitely take a break. I was referring to mmff 0.27, not mmff 0.28.

With mmff 0.28 the range should take 56 days at 100M k per second using a GTX580 or GTX980.

Luigi

[ET_]

Originally Posted by rogue

For these is there a limit for k where ppsieve is slower than fermfact?

AFAIK, ppsieve is always faster than FermFact, but you need FermFact to (at least) start a sieve, because of ppsieve's limitations on small p (iirc, p > kmax).

In other wrds, I usually start seving for 12/24 hours with FermFact, then save the remaining candidates and use the file as an input for ppsieve.

[rogue]

Originally Posted by ET_

180000 15000 30000

I'll do this range. There are about 350 tests for it.

[feromant]

Originally Posted by ET_

With mmff 0.28 the range should take 56 days at 100M k per second using a GTX580 or GTX980

Luigi pay attention to ETA (1d16h = 40h). 40h*8exp = 320h/24 = 13 days. Given the increase in ETA with increasing N and get 15 days but not 56 days.

[rogue]

Originally Posted by ET_

180000 15000 30000                no data available
180001-181742 13000 30000         no data available
181744-189999 13000 30000         no data available

I completed 180000 15000 30000. No primes in that range. For that n such a range of 15000 takes about 1 hour, but I was running on 4 cores on a fast laptop.

On my laptop I estimate about 96 days for 18001-181742 on a single core (after seiving) and about 487 days for 181744-189999 on my laptop.

[ET_]

Originally Posted by feromant

Luigi pay attention to ETA (1d16h = 40h). 40h*8exp = 320h/24 = 13 days. Given the increase in ETA with increasing N and get 15 days but not 56 days.

I had more conservative speeds for mmff, to cope with people having slower boards.

[ET_]

OK, so here we have the actual reservation ranges:

172-179 281000000000000 350000000000000  15 days  with mmff, 35 days with Feromant_CUDA
6151-6199 400000000 2500000000          1500 days  with a single-core pmfs
10000 253000000 269000000                 19 hours with a single-core pmfs
10001 50000000 269000000                  11  days with a single-core pmfs
10003-10999 50000000 269000000          5913 days  with ppsieve_cuda & pfgw
14501-14999 30000000 70000000            640 days  with ppsieve_cuda & pfgw
80001-80999 80000 100000                 150 days  with ppsieve_cuda & pfgw
114000-119999 40000 99999                 12 years with ppsieve_cuda and pfgw
120001-129999 30000 40000                  4 years with ppsieve_cuda & pfgw
130001-139999 20000 30000                  5 years with ppsieve_cuda & pfgw
160001-169999 15000 20000                  3 years with ppsieve_cuda & pfgw
180001-181742 13000 30000                 96 days  with ppsieve_cuda & pfgw
181744-189999 13000 30000                487 days  with ppsieve_cuda & pfgw

Thank you Mark for your help, I'm going to update the most wanted page.

Roman, are you going to take N=172-179, or is it free for reservation?

Luigi

[feromant]

Originally Posted by ET_

Roman, are you going to take N=172-179, or is it free for reservation?

Unfortunately, my GTX580 is now busy with other work and hardly will be released this year

[rogue]

I'll take this range: 10000 253000000 269000000