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Search: Posts Made By: cgy606
Forum: Msieve 2016-10-23, 07:00
Replies: 171
Views: 23,629
Posted By cgy606
A C155 from 119!-5: ...

A C155 from 119!-5:


n:14983833053669267073388859640749386761592128691535474632716887403740027331275486495085918514582693799340373342068801035123016311177538173489337402480577483
skew...
Forum: Factoring 2016-10-21, 07:20
Replies: 1
Views: 702
Posted By cgy606
SIQS on GPU

Hi,

I came across a interesting thesis written by somebody out of the University of Bath in the UK about the prospect of factorization using SIQS implemented on a GPU. I have provided the...
Forum: Msieve 2016-10-06, 07:04
Replies: 16
Views: 2,005
Posted By cgy606
I think this is the relevant information on the...

I think this is the relevant information on the poly I found:

Wed Oct 05 15:11:47 2016 Msieve v. 1.53 (SVN unknown)
Wed Oct 05 15:11:47 2016 random seeds: ee730bb0 795f1996
Wed Oct 05 15:11:47...
Forum: Msieve 2016-10-05, 22:21
Replies: 16
Views: 2,005
Posted By cgy606
I actually ran the size opt and root opt and got...

I actually ran the size opt and root opt and got a polynomial that yafu was able to use, so that works.

In regards to timing, I guess I would like to know how many stage 1 hits are enough (based...
Forum: Msieve 2016-10-05, 18:46
Replies: 16
Views: 2,005
Posted By cgy606
I have a quick question. I am running a stage 1...

I have a quick question. I am running a stage 1 polynomial selection on a 155 digit number. I set a deadline for searching of 100 seconds ("poly_deadline=100"), while not changing anything else....
Forum: Msieve 2016-10-05, 17:33
Replies: 16
Views: 2,005
Posted By cgy606
Thank you Carlos, the one with CUDA7 works (at...

Thank you Carlos, the one with CUDA7 works (at least is seems to generate a ton of number triplets on the screen which I think is stage 1). Now, without asking a ton of questions, is there something...
Forum: Msieve 2016-10-05, 17:18
Replies: 16
Views: 2,005
Posted By cgy606
I moved all the msieve files for the gpu to the...

I moved all the msieve files for the gpu to the same directory as msieve152. Here is what the directory looks like:

C:\Users\Documents\Factoring\msieve>dir
Volume in drive C has no label.
...
Forum: Msieve 2016-10-05, 07:36
Replies: 16
Views: 2,005
Posted By cgy606
That's not it. I didn't build this using VS2015....

That's not it. I didn't build this using VS2015. I downloaded the zip from http://gilchrist.ca/jeff/factoring/ (the 1.52dev SVN 942 (compiled by Brian Gladman)) and simple unpacked it and put it into...
Forum: Msieve 2016-10-05, 06:32
Replies: 16
Views: 2,005
Posted By cgy606
msieve 1.52 with GPU polynomial selection

I have been using yafu to do nfs on inputs around 150 digits and would like to to now use a gpu to help speed up polynomial selection on inputs larger than 150 digits (I have read a numerous places...
Forum: YAFU 2016-09-19, 12:02
Replies: 1,276
Views: 105,690
Posted By cgy606
Is there a way in yafu 1.34 to pretest a number...

Is there a way in yafu 1.34 to pretest a number to specific t-level and then on that same number switch over to nfs. This is desirable for snfs numbers as they should be pretested to about 3/4 *...
Forum: YAFU 2016-09-09, 20:00
Replies: 1,276
Views: 105,690
Posted By cgy606
Never-mind, it does the test sieving with 1...

Never-mind, it does the test sieving with 1 thread, then after it finishes testing, it does the actual sieving with all the threads...
Forum: YAFU 2016-09-09, 19:56
Replies: 1,276
Views: 105,690
Posted By cgy606
Okay, so that fixes it. However now I can't run...

Okay, so that fixes it. However now I can't run seiveing in a multithreaded fashion. I tried:


C:\Users\monir\Documents\yafu-1.30 NEW>yafu-x64.exe "snfs(2^545+3,(2^545+3)/35)" -p -v -lathreads 4...
Forum: YAFU 2016-09-09, 17:17
Replies: 1,276
Views: 105,690
Posted By cgy606
Hi, GNFS doesn't work either... ...

Hi,

GNFS doesn't work either...




yafu-x64.exe "nfs((78!+1)/(79*1361*10486169*24593461))" -p -v -threads 4 -R
Forum: YAFU 2016-09-09, 08:24
Replies: 1,276
Views: 105,690
Posted By cgy606
Hi, Trying to factor a number using snfs. I...

Hi,

Trying to factor a number using snfs. I normally do gnfs (as I have never done a snfs-able number). Using the latest version of yafu (1.34), I get this error:


yafu-x64.exe...
Forum: Msieve 2016-08-20, 07:48
Replies: 21
Views: 3,489
Posted By cgy606
I'm new to using msieve by itself (I use yafu). I...

I'm new to using msieve by itself (I use yafu). I would like to use msieve for polynomial selection. I run the following command on a C141:

echo...
Forum: GMP-ECM 2016-08-20, 04:52
Replies: 502
Views: 68,951
Posted By cgy606
Some interesting behavior to say the least. I ran...

Some interesting behavior to say the least. I ran a test on a C147 that I know has a p10, p17, p20, p20 at B1 = 250K. I ran 512 curves on the GPU using the ndigits = 20. It found all factors after...
Forum: GMP-ECM 2016-08-19, 22:29
Replies: 502
Views: 68,951
Posted By cgy606
Hi Wombatman, I was wondering you have have...

Hi Wombatman,

I was wondering you have have thought about what the steps that you took to compile gmp-ecm for gpu-ecm. I have the standard 1018-bit version and was wondering if I could try to see...
Forum: YAFU 2016-08-18, 17:23
Replies: 1,276
Views: 105,690
Posted By cgy606
Is there a way to have yafu use a gpu for just...

Is there a way to have yafu use a gpu for just polynomial selection in nfs? If not, is it possible to have msieve search for a polynomial on the gpu and then 'feed' this information to yafu (thereby...
Forum: GMP-ECM 2016-08-10, 16:59
Replies: 502
Views: 68,951
Posted By cgy606
I am using a GTX 980 on my laptop with 2048 cuda...

I am using a GTX 980 on my laptop with 2048 cuda cores and running 1024 stage 1 instances per process. I have been running curves using ecm_gpu (stage 1 on my gpu and multi-threading stage 2 on my...
Forum: GMP-ECM 2016-08-06, 07:25
Replies: 114
Views: 20,400
Posted By cgy606
Never-mind, I figured out how to use python 2.7...

Never-mind, I figured out how to use python 2.7 when two versions of python are installed. However, python 3.6 doesn't work for ecm.py (39) whereas python 2.7 does...
Forum: GMP-ECM 2016-08-06, 06:28
Replies: 114
Views: 20,400
Posted By cgy606
I just tested it now. Getting another error: ...

I just tested it now. Getting another error:




python ecm.py -threads 7 -resume 167fac3_43e6_0.save
-> ___________________________________________________________________
-> | Running...
Forum: GMP-ECM 2016-08-06, 06:22
Replies: 114
Views: 20,400
Posted By cgy606
I just installed the latest version of python 2...

I just installed the latest version of python 2 (2.7.12) on my machine. How do I run python 2 from the command prompt if both python 2 and 3 are installed? Do I have to change the environmental...
Forum: GMP-ECM 2016-08-06, 00:28
Replies: 114
Views: 20,400
Posted By cgy606
The command line input that the ecm.py creator...

The command line input that the ecm.py creator posted didn't indicate a B1 or B2 value. I tried it byadding the B1 and B2 values at the end of the command line, no effect:


python ecm.py -threads...
Forum: GMP-ECM 2016-08-05, 23:46
Replies: 114
Views: 20,400
Posted By cgy606
I tried running the script on a resume file...

I tried running the script on a resume file produced from a gpu stage 1 run. I am getting the following error:


python ecm.py -threads 8 -resume gpu.save
->...
Forum: GMP-ECM 2016-08-05, 22:32
Replies: 502
Views: 68,951
Posted By cgy606
Thanks, I think it is working now. Is there a way...

Thanks, I think it is working now. Is there a way to multi-thread stage 2 when running the resume command?
Showing results 1 to 25 of 63

 
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