- Dec 11, 1999
- 16,708
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Current race: Sophie Germain Prime Search (LLR), December 5-6 (00:00 UTC
) (That's December 4-5 for the Western Hemisphere.)
I decided to make this thread into a generic thread for LLR races, because it's getting late to start a thread after the Pentathlon, and I'm lazy.
Most of the advice below should apply to whatever LLR race is currently happening, except for the date and project.
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But soft! What light through yonder monitor breaks? It is a prime! And thou art the discoverer!
Welcome to the Shakespeare's Birthday Challenge. As a PPS LLR challenge, this is one of the best chances to find a prime number this year. The bad news is that this is only a "PPS LLR" challenge - there will be no easier PPSE LLR challenge this year. But you still have a good chance to find a prime.
This challenge runs from April 20, 16:16 UTC to April 23, 16:16 UTC. Note the unusual times. "Better three hours too soon than a minute too late," but even better to be right on time.
What you need:
What may help:
What won't help (but won't hurt either):
What won't help (and will hurt, sort of):
Welcome and good luck to all!
P.S. If no one has posted stats lately, try tracking your stats with my user script. With that installed, visit this address for TeAm stats.
I decided to make this thread into a generic thread for LLR races, because it's getting late to start a thread after the Pentathlon, and I'm lazy.
Most of the advice below should apply to whatever LLR race is currently happening, except for the date and project.
-----------------------------------------------
But soft! What light through yonder monitor breaks? It is a prime! And thou art the discoverer!
Welcome to the Shakespeare's Birthday Challenge. As a PPS LLR challenge, this is one of the best chances to find a prime number this year. The bad news is that this is only a "PPS LLR" challenge - there will be no easier PPSE LLR challenge this year. But you still have a good chance to find a prime.
This challenge runs from April 20, 16:16 UTC to April 23, 16:16 UTC. Note the unusual times. "Better three hours too soon than a minute too late," but even better to be right on time.
What you need:
- One or more fast x86 processors. (Even slow ones will do!)
- Windows (Vista or later 64-bit, or XP or later 32-bit), Linux, or MacOS 10.4+.
- BOINC, attached to PrimeGrid (http://www.primegrid.com/).
- Your PrimeGrid Preferences with only the above project selected in the Projects section.
What may help:
- An Intel Sandy Bridge, Ivy Bridge, or Haswell-based ("Core series" other than first-generation) processor with AVX may be 20-60% faster than with the default application. Sadly, that does not include Pentium or Celeron processors (sorry Larry), or AMD processors.
- Re-testing such processors after Thursday.
Michael Goetz said:Sometime during Thursday, April 17th (UTC) we are going to install the new FMA3 (aka AVX2) version of LLR on the PPS project, in preparation for the Shakespeare's Birthday Challenge that starts on Sunday.
Especially on Intel Haswell CPUs, but to some extent also on Ivy Bridge and Sandy Bridge CPUs, this new app is significantly faster. It also consumes more power, and generates more heat. Please make sure your computer is up to running the new app.
Information and discussion about the new LLR app can be found in this thread.
- Re-testing such processors after Thursday.
- A 64-bit OS.
What won't help (but won't hurt either):
- A large amount of RAM. Faster RAM might help, but that's doubtful too.
- Any GPUs.
- Any Android devices.
What won't help (and will hurt, sort of):
- Unstable processors. (Invalid work will be deducted!
If Prime95 worked recently on your processor, it should be stable.)
- Work not downloaded and uploaded within the challenge. (It's not counted. Should you not be able to be in front of one or more computers at that time, just set their queue level very low (0.01 days). This also makes it more likely that you will be a prime finder rather than a double-checker. But you might want to raise their queue size after the challenge is underway.)
Welcome and good luck to all!
P.S. If no one has posted stats lately, try tracking your stats with my user script. With that installed, visit this address for TeAm stats.
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