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2021-08-22, 02:20   #16
Prime95
P90 years forever!

Aug 2002
Yeehaw, FL

32·853 Posts

Quote:
 Originally Posted by kriesel and afterward found in local.txt: Code: ProofResiduesDir=./largetmp
This is the preferred solution to ProofPower=5. Obviously replace ./largetmp with /nfs/whatever

Just so you know what is happening:
ProofPower=5 means someone will have to do 3% of a full PRP test to double-check your result.
ProofPower=8 means someone will have to do 0.4% of a full PRP test to double-check your result.

ProofPower=5 requires 450MB disk space
ProofPower=8 requires 3.2GB disk space

I think this is covered in readme.txt -- if unclear, please suggest how we can make it clearer.

BTW, an LL test requires someone to do 100% of a full LL test to double-check your result. This makes it pretty clear why GIMPS chose to go with the more resource intensive PRP with proofs route.

One last caveat to my ProofPower=5 storage calculations. The temp file will require 32*14MB=448MB, but I fear that for a brief time during proof generation another 6*14MB=84MB might be required.

Last fiddled with by Prime95 on 2021-08-22 at 02:26