Sieving for CRUS

[lalera]

hi,
reserving R742, n=25k to 100k to sieve for BOINC
reserving S742, n=25k to 100k to sieve for BOINC

[sweety439]

Thanks for sieving S30, S461 and R1019!!!

[sweety439]

Sorry, I am a newcomer, should I sieve for BOINC myself?

[MisterBitcoin]

Originally Posted by sweety439

Sorry, I am a newcomer, should I sieve for BOINC myself?

Yes. How you can start, read the quote. (Posted by lalera)

hi,
in the case you are using linux x64
an example for S476, k=28, n=200k to 400k
you could start with
./srsieve-x86_64-linux --newpgen --nmin 200000 --nmax 400000 --pmax 20e9 28*476^n+1
this will take about 30 minutes
take the output file t16_b476_k28.npg
as an input file for sr1sieve
./sr1sieve-x86_64-linux -i t16_b476_k28.npg -o b476k28-1.txt -P40e12 -t4
this will take about 6 days

If your using Windows use CMD:

cd (to the directory where srsieve is located)
srsieve-x86_64-windows --newpgen --nmin 200000 --nmax 500000 --pmax 40e9 "28*476^n+1"
Well, its nearly the same like above. Notice: "-t(n)" only works on Linux.
You can found some informations in the README´s aswell.

[rogue]

Originally Posted by MisterBitcoin

Notice: "-t(n)" only works on Linux.

One of those goals of mine to address, but easier said than done as it would likely require a rewrite of major portions of the code

[MisterBitcoin]

S1021 has sieved to p=15T.

S17 will be at 90T on 08.12.
And: Reserving S1027.

Future plans:

S17 is now running on my "big" server and the other on on the smaller once. In about 1-2 day(s) I will start with S1027, allready sieved to 20M. (still 2,4 Million lines. :O)
I´ll then focus on the bigger once, like S63, S66, S7 and S15.

[gd_barnes]

Originally Posted by MisterBitcoin

<snip>
In about 1-2 day(s) I will start with S1027, allready sieved to 20M. (still 2,4 Million lines. :O) I´ll then focus on the bigger once, like S63, S66, S7 and S15.

It would be better to focus on more reasonably sized bases. For example:
Instead of S1027, consider S1010 or S1017 for n=100K-200K. These very large bases with many k's remaining take an extremely long time to test.
Instead of S63 and S66, consider other bases < 300 that have < 500 k's remaining for n=25K-100K.

In particular S7 and S15 have only had a small portion of their entire k-range tested. I would ignore them completely for now. Extending the currently tested k-range is inefficient in the long run. Wait until more of their k-range has been tested so that a much larger k-range can be included in a sieve.

[MisterBitcoin]

Originally Posted by gd_barnes

It would be better to focus on more reasonably sized bases. For example:
Instead of S1027, consider S1010 or S1017 for n=100K-200K. These very large bases with many k's remaining take an extremely long time to test.
Instead of S63 and S66, consider other bases < 300 that have < 500 k's remaining for n=25K-100K.

In particular S7 and S15 have only had a small portion of their entire k-range tested. I would ignore them completely for now. Extending the currently tested k-range is inefficient in the long run. Wait until more of their k-range has been tested so that a much larger k-range can be included in a sieve.

Allright, there are a lot of unsieved bases at n=100K. I´ll pick some of them. I´ll reserve in a few days.

[henryzz]

Originally Posted by rogue

One of those goals of mine to address, but easier said than done as it would likely require a rewrite of major portions of the code

I think it should now be possible to compile pthreads on windows and as such srxsieve with -t. Msieve uses pthreads currently on windows I think.

[grueny]

i'm working on s63
http://mersenneforum.org/showpost.ph...postcount=1337

[MisterBitcoin]

Originally Posted by grueny

i'm working on s63
http://mersenneforum.org/showpost.ph...postcount=1337

Well, it isnt reserved on the page. But there is a lot of work still open, no problem. ;)

S1027 will be at 50e9 in about 24 hours, >750000 factors found sofar. If this step is done I´ll bring it on one of my servers to give informations about the ETA.

BTW: Reserving S884, will be done in 3-4 days.