20200112, 05:11  #1 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
4288_{10} Posts 
Can someone explain these P1 Relative Primes variances?
I have 3 PC's all running P1 with the same bounds with exponents in the same range.
However, all 3 are process a different number of Relative Primes; RPs. (And there is a 4th and 5th quite close in exponents ALSO with different RPs) All are running: PMINUS1=N/A,1,2,41xxxxxx,1,750000,15000000,74 1. 41,8xx,xxx; 336 RPs; 6,500 RAM; 4 Workers X 1 Core; i53570; v29.4b5 2. 41,8xx,xxx; 192 RPs; 4,000 RAM; 2 X 2; i53570K; v29.4b7 3. 41,8xx,xxx; 480 RPs; 14,000 RAM; 4 X 1; i53570; v29.4b5 . . . . . 4. 41,3xx,xxx; 960 RPs; 20,000 RAM; 8 X 1; i77820X; v29.5b3 5. 42,3xx,xxx; 480 RPs; 11,000 RAM; 4 X 1; i52500; v29.4b7 Is it simply a function of Cores and RAM? Or is it also a function of CPU Specs? Or Version of Prime95? Do the RPs affect GhzDays given? Odds of finding a factor? Thanks Last fiddled with by petrw1 on 20200112 at 05:13 Reason: Last 2 ?s 
20200112, 05:53  #2 
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}·1,709 Posts 
RPs are a function of how much RAM prime95 thinks this a worker can use and stay under the memory limit your gave.
RPs do not affect CPU credit. RPs do not affect chance of finding a factor. 
20200112, 06:08  #3  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
3824_{10} Posts 
Quote:
#RP will affect run time; more #RP is more efficient. Bounds and prior factoring affect factoring odds for the P1 work. https://www.mersenneforum.org/showpo...4&postcount=17 Just curious, why are you still running old V29.4? V29.8 has been out for almost a year. Last fiddled with by kriesel on 20200112 at 06:13 

20200112, 16:17  #4  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{6}×67 Posts 
Quote:
Code:
[Jan 11 14:44] Available memory is 5265MB. [Jan 11 14:44] Using 5263MB of memory. Processing 296 relative primes (0 of 960 already processed). But my question is what determines the second number in bold above? Again I have 5 computers working on very similar P1 assignments and 4 of them have a different total RP number. Quote:
Is there a similar function somewhere that will calculate TF odds for the next bit level taking into account prior P1 (and ECM)? Quote:
Thanks both. 

20200112, 16:53  #5  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}·1,709 Posts 
Quote:


20200112, 17:03  #6  
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2^{4}·239 Posts 
Quote:
Or see the source code in prime95/mprime or cudapm1. It's not simple. 

20200112, 19:44  #7  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{6}·67 Posts 
Quote:
By the way, for some reason I am doing reasonably better than this. For the last 2 years I have been redoing P1 in 40M59M where B1=B2. Quite consistently the difference between the current B1=B2 (about 650,000/650,000 … about 1.8%) and the new B1/B2 (usually 1,000,000/20,000,000 … about 4.4%) as you can calculate is about 2.6%. However I am quite consistently getting very, very close to 3%. And that is with a decent sample size of about 25,000 runs. My question, though, is how can I calculate the expected TF success rate where a little or a lot of P1/ECM has been done? According to "The Math" the expected success rate for Bit x is about 1/(x+1). https://www.mersenne.org/various/math.php So if I am TF'ing at somewhere in the 72 to 75 bit ranges I should expect a success rate of about 1.35%. But again with a large sample size (about 50,000) my average is consistently very, very close to 1%. All of these TF runs are for exponents that have had some P1 done. Thanks. 

20200112, 19:48  #8 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
10C0_{16} Posts 
Code:
1. 41,8xx,xxx; 336 RPs; 6,500 RAM; 4 Workers X 1 Core; i53570; v29.4b5 2. 41,8xx,xxx; 192 RPs; 4,000 RAM; 2 X 2; i53570K; v29.4b7 3. 41,8xx,xxx; 480 RPs; 14,000 RAM; 4 X 1; i53570; v29.4b5 2. 3.2622 Ghz Days 3. 3.3783 Ghz Days Is that due to the Version of PrimeNet? 
20200112, 22:17  #9 
P90 years forever!
Aug 2002
Yeehaw, FL
1AB4_{16} Posts 

20200112, 22:20  #10  
Jul 2003
532_{16} Posts 
Quote:
Last fiddled with by masser on 20200112 at 22:21 

20200112, 22:43  #11  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
10300_{8} Posts 
Quote:
2304K 2240K 2304K 2160K 2240K Seems the smaller the FFT chosen the lower the credit given. Makes sense; thanks. 

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