20210422, 21:22  #606  
"James Heinrich"
May 2004
exNorthern Ontario
2·1,709 Posts 
Quote:


20210422, 21:39  #607 
"Dylan"
Mar 2017
579_{10} Posts 
From what I have read: It appears the B1 bound should be chosen so that the B1 for P+1 is much greater than the B1 used for ECM assignments (not exactly sure what is the best choice. Of course, with higher B1 bigger factors could be found.). B2 is either given by the user (if bit level is not specified) or given by the same determination as for P1 if the bit level is given.

20210422, 22:20  #608 
Dec 2016
73 Posts 
Regarding the B1/B2 choice, available RAM is currently the limit for me. I chose B1 as 40 times the B1 of the current ECM work and B2 = 50 * B1. In stage 2, that uses 2GB for already factored exponents around 95k (B1=40M, B2=2000M) and 4GB for already factored exponents around 295k (B1=10M, B2=500M). So e.g. a quad core with 16GB RAM can't go higher than that without running into problems. I actually had to make sure that not all curves go to stage 2 at the same time, or my computer would also run out of memory.

20210423, 03:32  #609 
"James Heinrich"
May 2004
exNorthern Ontario
2·1,709 Posts 
Once again there's a known issue with the nightly data sync (most likely related to P+1 results), waiting for Aaron to fix whatever the problem is before I can run the import.
edit: import complete. Last fiddled with by James Heinrich on 20210423 at 04:46 
20210423, 13:17  #610 
Dec 2016
73 Posts 
@James: Maybe you are just doing some testing right now, but https://www.mersenne.ca/exponent/287873 shows some debug info that probably should not be there.

20210423, 17:07  #611  
"James Heinrich"
May 2004
exNorthern Ontario
2·1,709 Posts 
Quote:
Thanks. 

20210425, 14:05  #612 
Jul 2003
wear a mask
3·557 Posts 

20210426, 00:47  #613 
"James Heinrich"
May 2004
exNorthern Ontario
110101011010_{2} Posts 
edit: yes... tapping...
Last fiddled with by James Heinrich on 20210426 at 00:48 
20210426, 01:37  #614 
"James Heinrich"
May 2004
exNorthern Ontario
2·1,709 Posts 
Turns out it was more of a case of fixing the programmer than the server.
It should be better now. 
20210426, 01:51  #615 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{2}×1,171 Posts 

20210426, 01:51  #616  
Jul 2003
wear a mask
3207_{8} Posts 
Quote:


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