Thread: Odd result
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Old 2016-02-04, 21:13   #11
bsquared
 
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"Ben"
Feb 2007

22·32·7·13 Posts
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Is this abnormally slow? I forget what to expect for SNFS ~240...

For reference, here is the linux 14e siever on the -a side over the range 24M-24M+2k:
Code:
nfs: commencing algebraic side lattice sieving over range: 24000000 - 24002000
gnfs-lasieve4I14e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning:  lowering FB_bound to 23999999.
FBsize 1506969+0 (deg 6), 2638709+0 (deg 1)
total yield: 3049, q=24002051 (0.07485 sec/rel) 
124 Special q, 762 reduction iterations
reports: 40449071->730667->657137->517658->348830->305514
Number of relations with k rational and l algebraic primes for (k,l)=:

Total yield: 3049
0/0 mpqs failures, 2843/2993 vain mpqs
milliseconds total: Sieve 86570 Sched 0 medsched 37770
TD 16150 (Init 120, MPQS 2320) Sieve-Change 87730
TD side 0: init/small/medium/large/search: 2390 250 630 3120 280
sieve: init/small/medium/large/search: 1060 13240 380 28080 200
TD side 1: init/small/medium/large/search: 2000 550 1020 2930 440
sieve: init/small/medium/large/search: 550 13540 250 27980 1290
nfs: found 3049 relations, need at least 181892208 (filtering ETA: 3878h 43m), continuing with sieving ...
and 14e on the -r side:
Code:
nfs: commencing rational side lattice sieving over range: 24000000 - 24002000
gnfs-lasieve4I14e (with asm64): L1_BITS=15, SVN $Revision: 399 $
Warning:  lowering FB_bound to 23999999.
FBsize 2637921+0 (deg 6), 1507120+0 (deg 1)
total yield: 2856, q=24002051 (0.07599 sec/rel) 
115 Special q, 687 reduction iterations
reports: 32265958->797045->713569->473524->334518->285602
Number of relations with k rational and l algebraic primes for (k,l)=:

Total yield: 2856
0/0 mpqs failures, 2608/2793 vain mpqs
milliseconds total: Sieve 81590 Sched 0 medsched 37650
TD 15590 (Init 140, MPQS 1970) Sieve-Change 82210
TD side 0: init/small/medium/large/search: 2050 540 960 3040 570
sieve: init/small/medium/large/search: 420 12970 270 27410 960
TD side 1: init/small/medium/large/search: 1950 300 630 2910 380
sieve: init/small/medium/large/search: 1090 11840 350 26180 100
nfs: found 2856 relations, need at least 181892208 (filtering ETA: 4010h 51m), continuing with sieving ...
Also, I highlighted what looks like a really high ratio of vain mpqs... but it's been too long since I ran the tools and I don't remember if this is a concern or not.
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