[Cado-nfs-discuss] [Question] regarding the lattice sieving ETA information

Emmanuel Thomé Emmanuel.Thome at inria.fr
Sun Jul 8 16:56:09 CEST 2018


As a general rule, ETAs given in cado-nfs are quite fragile.

Now, in your test, you're only 1.5% through your computation. You observe
that the printed ETA still fluctuates by some hours, around a time that
is more than 10 days in the future. I don't see that as a problem.

Or maybe I misunderstood what you think could be a misbehaviour.

E.

On Sun, Jul 08, 2018 at 12:00:50PM +0700, canny georgina wrote:
> Hi, I start to collect information regarding the lattice sieving
> process done by cado-nfs using the information provided  by ETA (I
> think).
> 
> So, what I see is that the inconsistent timing information within the
> ETA printed there. What I see is something like this:
> 
>  Info:Lattice Sieving: Found 1690 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.500000-510000.s9ceyoog.gz', total
> is now 1690/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_500000-510000 as
> ok (0.0% => ETA Unknown)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_530000-540000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_630000-640000 to database
> Info:Lattice Sieving: Found 1744 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.510000-520000.oehik8tu.gz', total
> is now 3434/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_510000-520000 as
> ok (0.1% => ETA Mon Aug  6 12:38:24 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_540000-550000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_640000-650000 to database
> Info:Lattice Sieving: Found 1780 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.520000-530000.qbputh3d.gz', total
> is now 5214/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_520000-530000 as
> ok (0.1% => ETA Tue Jul 31 07:12:02 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_550000-560000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_650000-660000 to database
> Info:Lattice Sieving: Found 1740 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.530000-540000.werm4cwd.gz', total
> is now 6954/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_530000-540000 as
> ok (0.2% => ETA Mon Jul 23 02:32:21 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_560000-570000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_660000-670000 to database
> Info:Lattice Sieving: Found 1608 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.540000-550000.5_sa3_hd.gz', total
> is now 8562/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_540000-550000 as
> ok (0.2% => ETA Mon Jul 23 21:13:38 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_570000-580000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_670000-680000 to database
> Info:Lattice Sieving: Found 1689 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.550000-560000.4b4jjy4z.gz', total
> is now 10251/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_550000-560000 as
> ok (0.2% => ETA Fri Jul 20 11:53:13 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_580000-590000 to client localhost
> Info:Lattice Sieving: Found 1750 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.560000-570000._w9zo_km.gz', total
> is now 12001/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_560000-570000 as
> ok (0.3% => ETA Sat Jul 21 10:10:17 2018)
> Info:Lattice Sieving: Adding workunit c110_sieving_680000-690000 to database
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_590000-600000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_690000-700000 to database
> 
> What i'm confused about is that the ETA printed something like this first:
> (0.1% => ETA Mon Aug  6 12:38:24 2018)
> then something like this:
> (0.1% => ETA Tue Jul 31 07:12:02 2018)
> (0.2% => ETA Mon Jul 23 02:32:21 2018)
> (0.2% => ETA Mon Jul 23 21:13:38 2018)
> (0.2% => ETA Fri Jul 20 11:53:13 2018)
> (0.3% => ETA Sat Jul 21 10:10:17 2018)
> (0.3% => ETA Thu Jul 19 09:26:08 2018)
> and so on..
> 
> 
> and as for when the ETA finally printed the quite constant date, (for
> july 17 provided below, the timing is a bit odd (well, I mean the time
> is counted down) just like this:
> 
> Info:Lattice Sieving: Found 1577 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.820000-830000.mq5pia5d.gz', total
> is now 54121/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_820000-830000 as
> ok (1.2% => ETA Tue Jul 17 09:21:16 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_850000-860000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_950000-960000 to database
> Info:Lattice Sieving: Found 1479 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.830000-840000.j92ydqyn.gz', total
> is now 55600/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_830000-840000 as
> ok (1.2% => ETA Tue Jul 17 03:08:12 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_860000-870000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_960000-970000 to database
> Info:Lattice Sieving: Found 1490 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.850000-860000.nfpmlbqz.gz', total
> is now 57090/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_850000-860000 as
> ok (1.3% => ETA Tue Jul 17 09:04:34 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_870000-880000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_970000-980000 to database
> Info:Lattice Sieving: Found 1637 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.840000-850000.v1ui6tyl.gz', total
> is now 58727/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_840000-850000 as
> ok (1.3% => ETA Tue Jul 17 01:40:07 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_880000-890000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_980000-990000 to database
> Info:Lattice Sieving: Found 1448 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.870000-880000.agv7ct5i.gz', total
> is now 60175/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_870000-880000 as
> ok (1.3% => ETA Tue Jul 17 07:43:21 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_890000-900000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_990000-1000000 to database
> Info:Lattice Sieving: Found 1574 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.860000-870000.xh_e7goz.gz', total
> is now 61749/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_860000-870000 as
> ok (1.4% => ETA Tue Jul 17 01:58:11 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_900000-910000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_1000000-1010000 to database
> Info:Lattice Sieving: Found 1663 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.880000-890000.2qykhi8e.gz', total
> is now 63412/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_880000-890000 as
> ok (1.4% => ETA Tue Jul 17 04:24:17 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_910000-920000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_1010000-1020000 to database
> Info:Lattice Sieving: Found 1421 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.890000-900000.23o7g0ep.gz', total
> is now 64833/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_890000-900000 as
> ok (1.4% => ETA Mon Jul 16 22:57:15 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_920000-930000 to client localhost+2
> Info:Lattice Sieving: Adding workunit c110_sieving_1020000-1030000 to database
> Info:Lattice Sieving: Found 1467 relations in
> '/tmp/cado.zs0d59rj/c110.upload/c110.900000-910000.7sci4ui_.gz', total
> is now 66300/4528085
> Info:Lattice Sieving: Marking workunit c110_sieving_900000-910000 as
> ok (1.5% => ETA Tue Jul 17 02:04:41 2018)
> Info:HTTP server: 127.0.0.1 Sending workunit
> c110_sieving_930000-940000 to client localhost
> Info:Lattice Sieving: Adding workunit c110_sieving_1030000-1040000 to database
> 
> I don't know but maybe i'm reading it the wrong way or is there
> something that I miss for this?
> 
> Thank you
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