20170304, 12:19  #1 
"144"
Mar 2017
144
3 Posts 
What Bounds to choose, and what are Bounds
I have read about Bounds, but it's too advanced for me, and I'm not sure how to scale Bounds to the exponent.
The Optimal Bounds I got auto assigned when I requested a P1 test for M332255197 are B1=4660000 and B2=4660000 (same). I have i56600k cpu and 16GB ram if it's important. And what is the number right for "Number to " in P1 settings. If you could, explain in general terms, I don't even have an intermediate understanding of these numbers and terms. 
20170304, 13:29  #2 
"144"
Mar 2017
144
3 Posts 
I changed the max memory in settings to 8192 day and 10240 night and get B1=3070000, B2=85192500 bounds now (posting this here since I can't edit my first post).

20170304, 18:13  #3 
"Victor de Hollander"
Aug 2011
the Netherlands
3^{2}·131 Posts 
The second stage (B2) requires more memory than stage 1 (B1) to run efficient. If you dont allocate enough memory it will only run stage 1 (B1=B2).
Prime95 calculates bounds before starting the assignment. Taking in consideration the amount of Trial Factoring done and the chance of finding a factor (thus saving 2 LL test). Bounds can change depending on the processor and/or architecture. Usually giving Prime95 1GB+ should allow it to run a decent stage 2. You can also use the maxhighmemoryworkers setting to allow only 1 or 2 stage 2 runs at the same time, so you can still use the machine for other things (or run them at night when you're not using the machine). Edit: You do realise 100milion digit numbers (332M) are not for the faint hearted? Its your choice what to do with your computing power/electricity, but people sometimes dont realise how big/long those assignments can be. Nothing wrong with P1 at the current wavefront (80M).. Last fiddled with by VictordeHolland on 20170304 at 18:22 Reason: 100M digit? 
20170305, 23:03  #4 
"144"
Mar 2017
144
3 Posts 
Thanks. I guess I'll use suggested Bounds for now. I do have about 10GB available at any time, so I hope it will get utilized.
I have 2 tests running at a time, so setting "MaxHighMemWorkers" to 1 could be useful. Yeah, I started realizing that 100m digit LL tests are not something I will undertake (estimated ~550 days on my CPU), only maybe if I can get it to work on my RX 480 AMD GPU (not sure it's supported (only mfakto supports AMD atm?)). Last fiddled with by 144 on 20170305 at 23:11 
20170306, 05:40  #5  
Romulan Interpreter
"name field"
Jun 2011
Thailand
3·23·149 Posts 
Quote:
Last fiddled with by LaurV on 20170306 at 05:46 

20170315, 13:36  #6 
Aug 2010
Republic of Belarus
2·89 Posts 
hmmm, weird. Regarding to your CPU LL test must be take ~120 days.
Last fiddled with by Lorenzo on 20170315 at 13:37 
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