Resuming yafu job (ecm)

Johnatan · 2016-04-07, 13:29

Is it possible to somehow configure yafu so hat it would be possible to resume yafu if yafu process is terminated?
I see in docfile.txt that some resumption is possible for seiving, but what about ECM?

How complicated would be to implement yafu ECM strategy in script that uses gmp-ecm directly?

Dubslow · 2016-04-07, 13:57

You can use the -work option to tell Yafu a certain amount of ECM has already been done

Johnatan · 2016-04-07, 19:34

Thanks for the hint!
For example, if I have this kind of output, what value should I pass to the -work option?

Code:

fac: setting target pretesting digits to 182.15
fac: t15: 1.07
fac: t20: 0.04
fac: estimated sum of completed work is t15.19
fac: work done at B1=11000: 0 curves, max work = 74 curves
fac: 74 more curves at B1=11000 needed to get to t182.15
ecm: found prp16 factor = 6586291483612179
fac: setting target pretesting digits to 177.54
fac: t15: 1.73
fac: t20: 0.15
fac: estimated sum of completed work is t15.73
fac: work done at B1=11000: 8 curves, max work = 74 curves
fac: 66 more curves at B1=11000 needed to get to t177.54
ecm: 72/72 curves on C577, B1=11K, B2=gmp-ecm default
fac: setting target pretesting digits to 177.54
fac: t15: 7.73
fac: t20: 1.12
fac: t25: 0.05
fac: estimated sum of completed work is t20.26
fac: work done at B1=50000: 0 curves, max work = 214 curves
fac: 214 more curves at B1=50000 needed to get to t177.54
ecm: 216/216 curves on C577, B1=50K, B2=gmp-ecm default, ETA: 4 sec   
pm1: starting B1 = 3750K, B2 = gmp-ecm default on C577
fac: setting target pretesting digits to 177.54
fac: t15: 38.59
fac: t20: 11.40
fac: t25: 1.06
fac: t30: 0.07
fac: estimated sum of completed work is t25.34
fac: work done at B1=250000: 0 curves, max work = 430 curves
fac: 430 more curves at B1=250000 needed to get to t177.54
ecm: 432/432 curves on C577, B1=250K, B2=gmp-ecm default, ETA: 20 sec   
pm1: starting B1 = 15M, B2 = gmp-ecm default on C577
fac: setting target pretesting digits to 177.54
fac: t15: 124.99
fac: t20: 65.40
fac: t25: 9.70
fac: t30: 1.07
fac: t35: 0.09
fac: estimated sum of completed work is t30.46
fac: work done at B1=1000000: 0 curves, max work = 904 curves
fac: 904 more curves at B1=1000000 needed to get to t177.54
ecm: 904/904 curves on C577, B1=1M, B2=gmp-ecm default, ETA: 1.4 min  
fac: setting target pretesting digits to 177.54
fac: t15: 426.32
fac: t20: 246.20
fac: t25: 54.90
fac: t30: 8.73
fac: t35: 1.09
fac: t40: 0.11
fac: estimated sum of completed work is t35.56
fac: work done at B1=3000000: 0 curves, max work = 2350 curves
fac: 2350 more curves at B1=3000000 needed to get to t177.54
ecm: 424/2352 curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs hrs

Dubslow · 2016-04-07, 21:41

Code:

fac: estimated sum of completed work is t35.56
...
ecm: 424/2352 curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs hrs

You've done a t35 with slightly under ten percent of the t40 complete. So maybe -work 35.5 or -work 36.

Johnatan · 2016-06-13, 11:39

Nice, thank you!
I will parse the output from yafu to calculate the work done.

In this progress line

Code:

ecm: 424/2352 curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs rs

I see "curve/out of total", but the trouble is finding what is the next target for which this process is in progress. E.g. this would be better:

Code:

ecm: 424/2352 (to get from t25 to t30) curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs rs

Of course, the best would be if yafu could simply show the work done so that it would not be needed to parse the output and calculate by hand.

2016-04-07, 13:29	#1
Johnatan Apr 2016 1101₂ Posts	Resuming yafu job (ecm) Is it possible to somehow configure yafu so hat it would be possible to resume yafu if yafu process is terminated? I see in docfile.txt that some resumption is possible for seiving, but what about ECM? How complicated would be to implement yafu ECM strategy in script that uses gmp-ecm directly?

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2016-04-07, 13:57	#2
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 7221₁₀ Posts	You can use the -work option to tell Yafu a certain amount of ECM has already been done

2016-04-07, 21:41	#4
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 7221₁₀ Posts	Code: fac: estimated sum of completed work is t35.56 ... ecm: 424/2352 curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs hrs You've done a t35 with slightly under ten percent of the t40 complete. So maybe -work 35.5 or -work 36.

2016-06-13, 11:39	#5
Johnatan Apr 2016 13 Posts	Nice, thank you! I will parse the output from yafu to calculate the work done. In this progress line Code: ecm: 424/2352 curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs rs I see "curve/out of total", but the trouble is finding what is the next target for which this process is in progress. E.g. this would be better: Code: ecm: 424/2352 (to get from t25 to t30) curves on C577, B1=3M, B2=gmp-ecm default, ETA: 14.67 hrs rs Of course, the best would be if yafu could simply show the work done so that it would not be needed to parse the output and calculate by hand.