20160908, 10:04  #1 
Jun 2016
10_{16} Posts 
return value 255 error
hello , anyone can help me solving this error ? is appear at final afther the 100% was reached.
> ________________________________________________________________ >  Running factmsieve.py, a Python driver for MSIEVE with GGNFS  >  sieving support. It is Copyright, 2010, Brian Gladman and is  >  a conversion of factmsieve.pl that is Copyright, 2004, Chris  >  Monico. Version 0.83 (Python 2.6 or later) 20th June 2011.  > ______________________________________________________________ > This is client 1 of 1 > Running on 2 Cores with 1 hyperthread per Core > Working with NAME = example > Selected default factorization parameters for 154 digit level. > Selected lattice siever: gnfslasieve4I14e > Creating param file to detect parameter changes... > Running setup ... > Estimated minimum relations needed: 5.70292e+07 > cleaning up before a restart > Running lattice siever ... > entering sieving loop > Running matrix solving step ... > ./msieve s ../example.dat l ../example.log i ../example.ini nf ../example.fb t 2 nc2 Return value 255. Terminating... and here is the example.log Thu Sep 8 09:59:45 2016 Msieve v. 1.52 (SVN Nicht versioniertes Verzeichnis) Thu Sep 8 09:59:45 2016 random seeds: 01ab0386 29e53fe6 Thu Sep 8 09:59:45 2016 factoring 7953266007138575923386026476271518626050106927131777619067868329703116911834876339688760071802326216706812958579045413916438649983062705062189119161638103 (154 digits) Thu Sep 8 09:59:46 2016 no P1/P+1/ECM available, skipping Thu Sep 8 09:59:46 2016 commencing number field sieve (154digit input) Thu Sep 8 09:59:46 2016 R0: 2313490887389456478718823507313 Thu Sep 8 09:59:46 2016 R1: 69045601986528629 Thu Sep 8 09:59:46 2016 A0: 101411494204712963122911999139065348523040 Thu Sep 8 09:59:46 2016 A1: 2408157634030417501441126109392798 Thu Sep 8 09:59:46 2016 A2: 580491766848188029735707957 Thu Sep 8 09:59:46 2016 A3: 10863771730542601210 Thu Sep 8 09:59:46 2016 A4: 234205574284 Thu Sep 8 09:59:46 2016 A5: 120 Thu Sep 8 09:59:46 2016 skew 54161164.61, size 4.798e15, alpha 8.274, combined = 2.776e12 rroots = 5 Thu Sep 8 09:59:46 2016 Thu Sep 8 09:59:46 2016 commencing linear algebra Thu Sep 8 09:59:47 2016 read 4250736 cycles Thu Sep 8 09:59:56 2016 cycles contain 12260196 unique relations Thu Sep 8 09:59:56 2016 read 0 relations Thu Sep 8 09:59:56 2016 error: cannot locate relation 57030371 
20160908, 12:58  #2 
Sep 2008
Kansas
2^{3}·431 Posts 
It appears your .dat file is empty. Did you accidentally start the sieving process and immediately terminate it after you noticed the mistake?

20160909, 11:50  #3 
Jun 2016
10000_{2} Posts 
hello, and many thanks for your replay.
no i didnt run sieving process. at my folder it existe: example.dat whit 157b example.dat.cyc whit 103.549.4xxb example.dat.lp whit 0b example.dat.mat whit 0b example.dat.t0.p whit 2.738b example.dat.t1.p whit 6.053b any more sugestions? 
20160909, 14:49  #4 
Sep 2008
Kansas
2^{3}·431 Posts 
Your .dat file only contains the composite plus a few control characters. There are no relations in the file.
Restore the .dat file from a backup copy (if you have one) and try again. or I’m not familiar with the Python script (only Perl) but maybe someone else could help out. You have example.dat.t0.p and .t1.p files. If those are in GB then you might have the relations needed. If those are in MB then the data is most likely from the last sieving step or some other process. Backup this folder before you try anything else! You can try to rebuild the .dat file like: Code:
cat example.dat.t* >> example.dat Code:
./msieve s ../example.dat l ../example.log i ../example.ini nf ../example.fb t 2 nc2 nc3 If you get a lot of “error nn” at the start, then the .dat.tx.p is not the relations file. You may have to perform the sieving step again. 
20160910, 11:17  #5 
Jun 2016
2^{4} Posts 
HI, i dont have the backup of the example.dat.
the files example.dat.t0.p and t1.p are in kb i try your cmd cat example.dat.t* >> example.dat and then only this one work ./msieve s ../example.dat l ../example.log i ../example.ini nf ../example.fb t 2 nc4 Fri Sep 9 16:11:08 2016 Msieve v. 1.52 (SVN Nicht versioniertes Verzeichnis) Fri Sep 9 16:11:08 2016 random seeds: 7db38e6f 8327b2d3 Fri Sep 9 16:11:08 2016 factoring 7953266007138575923386026476271518626050106927131777619067868329703116911834876339688760071802326216706812958579045413916438649983062705062189119161638103 (154 digits) Fri Sep 9 16:11:09 2016 no P1/P+1/ECM available, skipping Fri Sep 9 16:11:09 2016 commencing quadratic sieve (154digit input) Fri Sep 9 16:11:11 2016 using multiplier of 1 Fri Sep 9 16:11:11 2016 using generic 32kb sieve core Fri Sep 9 16:11:11 2016 sieve interval: 400 blocks of size 32768 Fri Sep 9 16:11:11 2016 processing polynomials in batches of 1 Fri Sep 9 16:11:11 2016 using a sieve bound of 42898589 (1300000 primes) Fri Sep 9 16:11:11 2016 using large prime bound of 4294967295 (31 bits) Fri Sep 9 16:11:11 2016 using double large prime bound of 218437776016143360 (5158 bits) Fri Sep 9 16:11:11 2016 using trial factoring cutoff of 58 bits Fri Sep 9 16:11:11 2016 polynomial 'A' values have 16 factors Fri Sep 9 16:16:15 2016 0 relations (0 full + 0 combined from 4 partial), need 1300096 Fri Sep 9 16:16:15 2016 elapsed time 00:05:07 Fri Sep 9 16:18:39 2016 Fri Sep 9 16:18:39 2016 Fri Sep 9 16:18:39 2016 Msieve v. 1.52 (SVN Nicht versioniertes Verzeichnis) Fri Sep 9 16:18:39 2016 random seeds: 6bdf31dd 19906ede Fri Sep 9 16:18:39 2016 factoring 7953266007138575923386026476271518626050106927131777619067868329703116911834876339688760071802326216706812958579045413916438649983062705062189119161638103 (154 digits) Fri Sep 9 16:18:40 2016 no P1/P+1/ECM available, skipping Fri Sep 9 16:18:40 2016 commencing quadratic sieve (154digit input) Fri Sep 9 16:18:43 2016 using multiplier of 1 Fri Sep 9 16:18:43 2016 using generic 32kb sieve core Fri Sep 9 16:18:43 2016 sieve interval: 400 blocks of size 32768 Fri Sep 9 16:18:43 2016 processing polynomials in batches of 1 Fri Sep 9 16:18:43 2016 using a sieve bound of 42898589 (1300000 primes) Fri Sep 9 16:18:43 2016 using large prime bound of 4294967295 (31 bits) Fri Sep 9 16:18:43 2016 using double large prime bound of 218437776016143360 (5158 bits) Fri Sep 9 16:18:43 2016 using trial factoring cutoff of 58 bits Fri Sep 9 16:18:43 2016 polynomial 'A' values have 16 factors Fri Sep 9 16:18:43 2016 restarting with 0 full and 4 partial relations should i let contiune? Last fiddled with by cardmaker on 20160910 at 11:19 
20160910, 13:43  #6  
Sep 2008
Kansas
2^{3}·431 Posts 
Quote:
Your .dat file should be in the neighborhood of 57 GB. We've all made this same mistake before. 

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