20210615, 01:52  #1 
Mar 2004
2^{2}×3^{3}×5 Posts 
Should I redo PM1?
I am working on a 100M digit exponent and I noticed that the P1 test has been done with bounds B1=100000, B2=1000000. Even on a lowram PC, I blow these bounds out of the water. In terms of saving a PRP test, should I redo the PM1 test?

20210615, 03:00  #2 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
3^{2}×599 Posts 
Go for the GPU72 bounds or at least the PrimeNet bounds https://www.mersenne.ca/exponent/332194529 for example
or use the calculator at https://www.mersenne.ca/prob.php?exp...&factorbits=81 No halfmeasures first. Go for adequate bounds first time around, so it's one and done. Anything less is a waste. https://www.mersenneforum.org/showpo...9&postcount=20 Last fiddled with by kriesel on 20210615 at 03:01 
20210615, 03:14  #3 
6809 > 6502
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Aug 2003
101×103 Posts
2^{6}·3^{2}·17 Posts 
I concur.

20210615, 05:33  #4 
Mar 2004
2^{2}×3^{3}×5 Posts 
How many tests are saved with those bounds? I set the number of tests saved to 1, 2, and 1.1 just to experiment and I can't reproduce those bounds.

20210615, 10:11  #5 
Jun 2003
2·43·59 Posts 
Don't worry about reproducing the outcome of the calculator. Just set tests saved to 1, give as much memory as you can spare, and let P95 / gpuowl calculate the optimal bounds.

20210615, 15:16  #6 
Mar 2004
1000011100_{2} Posts 
OK that's what I'm doing then, although I set tests saved to 1.01 to potentially save the DC. (I tried setting the tests saved to 1.005 since the website says the DC takes less than 0.5% time, but tests saved only takes decimals down to the hundredths place.) The bounds are B1=1309000 and B2=60901000.
Last fiddled with by JuanTutors on 20210615 at 15:22 
20210615, 17:39  #7 
Jun 2003
1001111010010_{2} Posts 
Sounds reasonable. With the older "2 tests saved" setting it would've spent more than 2x that amount.

20210616, 19:42  #8 
Mar 2004
1034_{8} Posts 
About the trial factoring to GPU72 depth, I don't have a way to TF the exponent to that depth. I tried setting it up on my computers and failed miserably. Is there a thread to make TF requests for exponents that are currently being P1 tested?
Last fiddled with by JuanTutors on 20210616 at 19:42 
20210616, 20:10  #9 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
2^{6}·3^{2}·17 Posts 
Have you tried doing a google Colab? There is material about it in the GPU72 section. If you haven't used it you could get the TF done. Somewhere in one of the threads Chalsall posted a bit of code to all you to add in an assignment of your choice.

20210618, 01:04  #10 
Mar 2004
2^{2}·3^{3}·5 Posts 
That's new to me. I tried to get the instructions between students. Hopefully I can get that going. I will try again tomorrow.

20210629, 17:00  #11 
Mar 2004
2^{2}·3^{3}·5 Posts 
I found a few threads about Google Colab. Is there a stepbystep instruction manual on using Google Colab for TF? Like paste this here, change this here, etc?
