Force 1st time primality test with mprime

[Uncle Lumpy]

Hi...first time poster.

I've been running Prime95/mprime for a long, long time (since we had to contact George directly to check out exponents to test). I just noticed that I have 2 machines which simply will not do a 1st time primality check--both machines default to double checking. They are both 2-year old quad core Xeon machines so I would think they'd still be fast enough to do first time testing. They default to double checking even if I set mprime "type of work to get" to 100.

Any thoughts as to what's happening?

Thanks,
Lumpy

[Prime95]

Anything interesting in prime.log?

[Mark Rose]

Originally Posted by Uncle Lumpy

Any thoughts as to what's happening?

Have they completed a double check in the last year? That's the default is to perform one double check per year to find out quickly if a machine is working incorrectly -- both to notify the user and for the project to double check machine's work ahead of time. Since newly registered machines haven't done a double check, that's the first assignment they get.

You can change the setting under Assignment Rules if you don't want to do those double checks.

[Uncle Lumpy]

Originally Posted by Mark Rose

Have they completed a double check in the last year? That's the default is to perform one double check per year to find out quickly if a machine is working incorrectly -- both to notify the user and for the project to double check machine's work ahead of time. Since newly registered machines haven't done a double check, that's the first assignment they get.

You can change the setting under Assignment Rules if you don't want to do those double checks.

That's a really good question. I'm guessing they have not completed a double check in the past year. So after they complete the double check, they'll start doing LL tests? One of the machines has already downloaded a second exponent to double check...

Thanks for the info! I'll look into the assignment rules.

Best,
Lumpy

[Uncle Lumpy]

Originally Posted by Prime95

Anything interesting in prime.log?

Oooops! Thanks for the heads up, George. I guess I should have looked at the log before posting since it says right in there that it's doing a double-check for the "yearly hardware check."

Still learning after 21 years of working with GIMPS,
Lumpy

[CRGreathouse]

Cool feature, you learn things every day!