Re: Mersenne: LL and factoring & quitting

1999-06-14 Thread Brian J. Beesley
On 14 Jun 99, at 6:41, lrwiman wrote: > We will of course have to check factors considerably further than we are doing > on our current exponent range (due to the increased LL iteration time.) Yes - on the principle that it's worthwhile to spend 5% to 10% of the LL testing time attemptimg to fi

Re: Mersenne: LL and factoring & quitting

1999-06-14 Thread lrwiman
all, Thanks to Brian J Beesley, and Peter Lawrence for the info on why my whole 2 simultanious tests idea wouldn't work. Just an idea that ran through my sleep deprived brain... >> Also, I'm going to quit first time LL testing. Call me impatient, >> but I don't >> want to wait until early July

Re: Mersenne: LL and factoring & quitting

1999-06-14 Thread Brian J Beesley
lrwiman <[EMAIL PROTECTED]> writes: > It has been mentioned several times recently that factoring is all integer > work, and LL testing is nearly all floating point. > > It is my understanding that on intel CPU's, these are done on separate parts of > the CPU. Would it increase net performance

Re: Mersenne: LL and factoring & quitting

1999-06-14 Thread Peter-Lawrence . Montgomery
lrwiman <[EMAIL PROTECTED]> wrote: > > It has been mentioned several times recently that factoring is all integer > work, and LL testing is nearly all floating point. > > It is my understanding that on intel CPU's, these are done on separate parts of > the CPU. Would it increase net performanc

Re: Mersenne: LL and factoring & quitting

1999-06-13 Thread Anonymous
>It has been mentioned several times recently that factoring is all integer >work, and LL testing is nearly all floating point. If I recall correctly, doesn't the factoring code use floating point routines on the faster CPUs? >It is my understanding that on intel CPU's, these are done on separa

Mersenne: LL and factoring & quitting

1999-06-13 Thread lrwiman
It has been mentioned several times recently that factoring is all integer work, and LL testing is nearly all floating point. It is my understanding that on intel CPU's, these are done on separate parts of the CPU. Would it increase net performance to do factoring and LL assignments at the same