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1) Message boards : Sieving : Manual Sieving Stats (Message 133073)
Posted 53 days ago by Allen Paschke
Comparing the 20 Sept vs. the 21 Sept Manual Sieving Stats for GFN18:
- I ran no GFN18, so my total "P's" Run remained unchanged at 309
- The Factors Found increased by 4,323 from 1,429 to 5,772
- The Removed from Sieve increased by 1,349 from 467 to 1,816

Does this make any sense, considering I made no GFN18 runs on 20 Sept?
2) Message boards : Sieving : GFN23 manual sieving is opened (Message 132708)
Posted 66 days ago by Allen Paschke
Today (9 Sept 2019), when the uploaded factors were processed, it does not appear that the Manual Sieving Statistics were updated.
3) Message boards : Number crunching : Better multi-threading (Message 132551)
Posted 70 days ago by Allen Paschke
Yesterday, I ran some PPSE LLR MT tasks and some SGS LLR MT tasks, using 4 CPUs. On my PC, they are not more efficient.

On my PC, a non-MT PPSE LLR task averages 54 minutes run time, while a MT PPSE LLR (4 CPUs) task averaged 16 minutes. So, 4 MT PPSE LLR (4 CPUs) tasks would run in 64 minutes vs. 54 minutes for 4 non-MT PPSE LLR tasks, 19% additional run time.

On my PC, a non-MT SGS LLR task averages 44 minutes run time, while a MT SGS LLR (4 CPUs) task averaged 14 minutes run time. So, 4 MT PPSE LLR (4 CPUs) tasks would run in 56 minutes vs. 44 minutes for 4 non-MT SGS LLR tasks, 27% additional run time.

Are MT tasks more efficient than non-MT tasks for tasks requiring a long average CPU time?
4) Message boards : Sieving : Curiousity (Message 131745)
Posted 100 days ago by Allen Paschke
Jim, thank you!!!!

Thank you for all your efforts!!!! They are greatly appreciated!!!!
5) Message boards : Sieving : Curiousity (Message 131592)
Posted 105 days ago by Allen Paschke
I am curious and I like to learn.

When I run Manual Sieving for GFN17, for each 1P that I run, approximately 100 lines are written, such as 213888748689316642817 | 120405194^131072+1.
I assume that 120405194^131072+1 is a factor for GFN17.

However, for each 1P, for the approximately 100 records that are written:
- Why are only about 20 records considered factors?
> Why are about 5 of the 20 records removed from the sieve?
- What are the other 80 records?

How is 213888 . . . . from 213888P - 213889P related to 120405194^131072+1?
There is a “C” file for restarting with a value of 815920922987789. --- I expected to see a number between 213888P and 213889P
How are the “C” file value (815 . . .), 213888 . . . and 120405194^131072+1 all related?
6) Message boards : 321 Prime Search : 321 Sieve (Message 128321)
Posted 233 days ago by Allen Paschke
I was finishing up the 1.13 tasks. I received the first 1.14 tasks. The problem is fixed. Thank you!!!!
7) Message boards : 321 Prime Search : 321 Sieve (Message 128290)
Posted 234 days ago by Allen Paschke
I have been running 321 Sieve tasks on my PC. When a 321 Sieve task downloads from BOINC, it has a Remaining (estimated) Time of -0d 00:08.08. When I have 321 Sieve tasks in the BOINC Queue, I have very few other PrimeGrid tasks from other Subprojects. When there are no 321 Sieve tasks in the BOINC queue, I have the usual PrimeGrid tasks from other Subprojects.
8) Message boards : Sieving : New automated manual sieving system (Message 118434)
Posted 524 days ago by Allen Paschke
I recently ran Factorial Prime Sieving for 8803G - 8804G. No factors were found and a factors file was not created.

I created a ffactors_8803G-8804G.txt with the following information and I uploaded it :

Sieve complete: 8803000000000 <= p < 8804000000000
Found factors for 0 terms, 771558 remain
count=33553611,sum=0x03594d20941b61e7
Elapsed time: 184909.31 sec. (1.43 init + 184907.87 sieve) at 5408 p/sec.
Processor time: 181012.89 sec. (1.39 init + 181011.50 sieve) at 5525 p/sec.
Average processor utilization: 0.97 (init), 0.98 (sieve)

What is the proper procedure when Sieving finds no factors and creates no factors file?
9) Message boards : Sieving : New automated manual sieving system (Message 117726)
Posted 558 days ago by Allen Paschke
I'm trying to get Factorial Prime Sieving working on my computer. I am running Microsoft Windows 10: Professional x64 Edition.

I made a reservation for 2G of Factorial Prime Sieving, in CPU mode. I created a directory under the C: Drive called PrimeGrid. Into that directory I downloaded fpsieve-x86_64-windows.exe, fsieve_7T.txt and fpconfig.txt.

I have clicked to run as Admin on fpsieve-x86_64-windows.exe and nothing happens.

I have opened a Command Prompt Window as Admin, changed the Directory to PrimeGrid, and typed in the command "-p8300G -P8302G -ifsieve_7T.txt -fffactors_8300G-8302G.txt", without the “. I get the message that '-p8300G' is not recognized as an internal or external command, operable program or batch file.

I'm missing something to make Factorial Prime Sieving work.

Thank you, in advance, for your help and assistance.
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