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2020-08-28, 16:28   #441
pepi37

Dec 2011
After milion nines:)

135210 Posts

Quote:
 Originally Posted by rogue The reason is that -x is intended to be used on new sieves. It is also geared towards n < 2000. For larger n using gfndsieve+pfgw would be faster. Also other programs will likely be faster than gfndsieve for such small x.
All you say is OK but if I wish to use your program what will be correct command?

2020-08-28, 19:28   #442
rogue

"Mark"
Apr 2003
Between here and the

7×857 Posts

Quote:
 Originally Posted by pepi37 All you say is OK but if I wish to use your program what will be correct command?
What n range are you sieving?

2020-08-28, 19:40   #443
pepi37

Dec 2011
After milion nines:)

54816 Posts

Quote:
 Originally Posted by rogue What n range are you sieving?

-k 10000 -K 10050 -n 1600 -N 1610

just for test , but to know how to use x option

2020-08-29, 00:05   #444
rogue

"Mark"
Apr 2003
Between here and the

7·857 Posts

Quote:
 Originally Posted by pepi37 -k 10000 -K 10050 -n 1600 -N 1610 just for test , but to know how to use x option
As long as you are not using -i, you can use -x. I assume that you are just testing the functionality. For that range of k and n feromant or pmts would be faster per http://www.fermatsearch.org/productivity.html

2020-08-29, 20:06   #445
pepi37

Dec 2011
After milion nines:)

23·132 Posts

Quote:
 Originally Posted by rogue As long as you are not using -i, you can use -x. I assume that you are just testing the functionality. For that range of k and n feromant or pmts would be faster per http://www.fermatsearch.org/productivity.html

e:\MTSIEVE\GFDN>gfndsievecl.exe -k 170000 -K 170050 -n 29900 -N 30000 -P 2000000000 -W6 -x
gfndsieve v1.8, a program to find factors of k*2^n+1 numbers for variable k and n
terminate called after throwing an instance of 'std::bad_alloc'

2020-08-30, 00:23   #446
rogue

"Mark"
Apr 2003
Between here and the

7·857 Posts

Quote:
 Originally Posted by pepi37 e:\MTSIEVE\GFDN>gfndsievecl.exe -k 170000 -K 170050 -n 29900 -N 30000 -P 2000000000 -W6 -x gfndsieve v1.8, a program to find factors of k*2^n+1 numbers for variable k and n terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc
It ran out of memory. Use -X to reduce the number of terms per chunk.

Since n is so large, you are much better off running without -x than using pfgw with the output file.

 2020-09-17, 18:08 #447 rogue     "Mark" Apr 2003 Between here and the 599910 Posts I have posted 2.0.6 at sourceforge. Here are the improvements: Fixed crash with xyyxsievecl with overly large ranges for the GPU. More speed enhancements for xyyxsieve, mainly due to reduced memory requirements. Do not show ETA or percent done if less than 1% done and -P not used. Modify factor rate calculation to handle uneven factor distribution better. Fix srsieve2 to not check for algebraic factors when abs(c) != 1. Fix srsieve2 as it was counting factors of terms that had already been removed. srsieve2 has some issues for (k*b^n+c)/d that are not fully worked out. The main ones are the removal of terms if d does not divide k*b^n+c and factors of (k*b^n+c)/d if gcd(d, p) > 1 and gcd(d, p) != p. I would appreciate if anyone could write some code to assist in those areas.
 2020-09-19, 05:50 #448 henryzz Just call me Henry     "David" Sep 2007 Cambridge (GMT/BST) 131578 Posts What is the best way to convert fkbnsieve output to abc format rather than abcd?
 2020-11-02, 16:39 #449 Dylan14     "Dylan" Mar 2017 24×3×11 Posts For anyone that uses Arch Linux or its derivatives, I've made mtsieve into an AUR package. All that's needed to install it is to run Code: pikaur -S mtsieve and you can install the full suite.
 2020-11-08, 07:12 #450 rebirther     Sep 2011 Germany 1010000111002 Posts The latest srsieve2 has still worker issues where not all workers are used. This is happening around 2 of 10 bases and only 1 core is active. Code: srsieve2 -n2501 -N10000 -P1e9 -W16 -spl_remain.txt -fB In this case Iam using the srsieve2 file from 16.01.2020 without a problem.
2020-11-08, 14:01   #451
rogue

"Mark"
Apr 2003
Between here and the

176F16 Posts

Quote:
 Originally Posted by rebirther The latest srsieve2 has still worker issues where not all workers are used. This is happening around 2 of 10 bases and only 1 core is active. Code: srsieve2 -n2501 -N10000 -P1e9 -W16 -spl_remain.txt -fB In this case Iam using the srsieve2 file from 16.01.2020 without a problem.
Do you mean the the one from earlier this year works correctly and the newer one does not?