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Old 2015-03-12, 19:11   #1
paul0
 
Sep 2011

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Default What exactly is sent to the server?

Is it the floating point results of the sieve area from adding log(p), or the smooth (a,b) pairs? Also, is there a way get more information on what's exactly going on in lasieve, like a log output?
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Old 2015-03-12, 20:43   #2
Dubslow
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Jun 2011
40<A<43 -89<O<-88

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The pairs, which are called relations.

Here's a yafu sieve I have going with 8 threads, and the -v output from one lasieve thread when it finishes its chunk:

Code:
nfs: commencing algebraic side lattice sieving over range: 12468000 - 12484000
nfs: commencing algebraic side lattice sieving over range: 12516000 - 12532000
nfs: commencing algebraic side lattice sieving over range: 12484000 - 12500000
nfs: commencing algebraic side lattice sieving over range: 12500000 - 12516000
nfs: commencing algebraic side lattice sieving over range: 12452000 - 12468000
nfs: commencing algebraic side lattice sieving over range: 12564000 - 12580000
nfs: commencing algebraic side lattice sieving over range: 12532000 - 12548000
nfs: commencing algebraic side lattice sieving over range: 12548000 - 12564000
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
Warning:  lowering FB_bound to 12451999.
Warning:  lowering FB_bound to 12483999.
Warning:  lowering FB_bound to 12515999.
Warning:  lowering FB_bound to 12563999.
Warning:  lowering FB_bound to 12467999.
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
Warning:  lowering FB_bound to 12499999.
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
Warning:  lowering FB_bound to 12547999.
gnfs-lasieve4I15e (with asm64): L1_BITS=15, SVN $Revision: 430 $
Warning:  lowering FB_bound to 12531999.
FBsize 822174+0 (deg 6), 1424605+0 (deg 1)
FBsize 817262+0 (deg 6), 1424605+0 (deg 1)
FBsize 820272+0 (deg 6), 1424605+0 (deg 1)
FBsize 816180+0 (deg 6), 1424605+0 (deg 1)
FBsize 819224+0 (deg 6), 1424605+0 (deg 1)
FBsize 818158+0 (deg 6), 1424605+0 (deg 1)
FBsize 821200+0 (deg 6), 1424605+0 (deg 1)
FBsize 815176+0 (deg 6), 1424605+0 (deg 1)
total yield: 38823, q=12500003 (0.17486 sec/rel) ETA 0h00m)  
902 Special q, 4859 reduction iterations
reports: 1052606414->10568263->9645975->6525629->5620838->4052921
Number of relations with k rational and l algebraic primes for (k,l)=:

Total yield: 38823
0/0 mpqs failures, 47188/38470 vain mpqs
milliseconds total: Sieve 4944590 Sched 0 medsched 531000
TD 849560 (Init 6420, MPQS 46900) Sieve-Change 463280
TD side 0: init/small/medium/large/search: 155920 40490 35000 159190 17810
sieve: init/small/medium/large/search: 49520 651010 38740 1534400 88610
TD side 1: init/small/medium/large/search: 140620 28280 30320 172230 13140
sieve: init/small/medium/large/search: 48430 809530 37210 1672300 14840
This is what the output written to file looks like. One line is one relation (I don't know what the exact format is). I can tell you that this code is what yafu uses to read the last special q sieved when resuming.

Code:
186311877,6131341:1EBB,7F147F,5DFDE7,494347,2F7D57,154B4D:1636DAD,17C1607,C5B,7BBD07,2B1F89,184235,14CA7,BFF46B
727599293,4406429:2CADF93,CFA8DFF,1087,713,28A597,11ADBB,58FFD:151A9A05,6100F79,4BD,3067FD,81A63,13C93,6371,BFF46B
-81830591,3606839:1C94C25D,821,2B97,3AA26D,4BAA9,1702D:13EA8EF9,C2D61F,15F7,3B96EF,7E1F7,22F37,DDF5,BFF46B
-27657059,4468563:1471,3307,114DF55,88E93B,1A1CF7,10F391,F521:31358A2B,A63,2875,82D759,27C2D5,86B0D,23BCD,BFF46B
-197542209,2552299:3885F391,14397A3,10979F,4A16D,2BA77,7255:6BA9FCB,14917E7,4C7,E53ED,D018F,BFF46B
117581497,7875173:13A3D89F,215F,2F53DF,15B867,CAC7B,61C7:2395EF5,ABEE5AD,19A071,5E2CD,28C69,19865,BFF46B
656950809,1656337:160D9C89,1B59,198017,9C499,23FFB,13D15,57D1:1BA6E5B,1F57F3,1E2113,297A1,18569,165E5,100C3,6809,BFF46B
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Old 2015-03-12, 23:00   #3
henryzz
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Quote:
Originally Posted by Dubslow View Post
This is what the output written to file looks like. One line is one relation (I don't know what the exact format is). I can tell you that this code is what yafu uses to read the last special q sieved when resuming.

Code:
186311877,6131341:1EBB,7F147F,5DFDE7,494347,2F7D57,154B4D:1636DAD,17C1607,C5B,7BBD07,2B1F89,184235,14CA7,BFF46B
727599293,4406429:2CADF93,CFA8DFF,1087,713,28A597,11ADBB,58FFD:151A9A05,6100F79,4BD,3067FD,81A63,13C93,6371,BFF46B
-81830591,3606839:1C94C25D,821,2B97,3AA26D,4BAA9,1702D:13EA8EF9,C2D61F,15F7,3B96EF,7E1F7,22F37,DDF5,BFF46B
-27657059,4468563:1471,3307,114DF55,88E93B,1A1CF7,10F391,F521:31358A2B,A63,2875,82D759,27C2D5,86B0D,23BCD,BFF46B
-197542209,2552299:3885F391,14397A3,10979F,4A16D,2BA77,7255:6BA9FCB,14917E7,4C7,E53ED,D018F,BFF46B
117581497,7875173:13A3D89F,215F,2F53DF,15B867,CAC7B,61C7:2395EF5,ABEE5AD,19A071,5E2CD,28C69,19865,BFF46B
656950809,1656337:160D9C89,1B59,198017,9C499,23FFB,13D15,57D1:1BA6E5B,1F57F3,1E2113,297A1,18569,165E5,100C3,6809,BFF46B
The format is:
a,b:factors on rational side:factors on algebraic side
The factors are stored in hex rather than base 10 to save space. Factors less than 1000 are often excluded to save space.

Last fiddled with by henryzz on 2015-03-12 at 23:01
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