LMH status

[petrw1]

- Reach 300M by mid September 2011
=== 8 months in the 100M range = about 4.75 months in the 200M range. I am not anticipating any help in the 200M from the "big guns"

- Reach 400M by mid October 2011
=== 3.4 Months in the 300M range X 30% left and assuming no help = 1 month.

- Reach 500M by mid November 2011
=== 2.6 Months in the 400M range X 40% = 1 month

- Reach 600M by mid November 2011
=== 2.16 Months in the 500M range X 66% = 1.44 months BUT I assumed you (Chalsall) might finish this range yourself by then (or the equivalent in some other ranges)

- Reach 700M by early December (missed this one)
=== 1.8 months in the 600M range X 40% = 3/4 months.

- Reach 800M by early December 2011
=== 1.6 months in the 700M range but 700M will be complete to 65 bits by then by Monst

- Reach 900M by end of year 2011
=== 1.4 months in the 800M range X 40% = 2/3 month

- still complete all exponents (above 100M) to 65 bits by year end 2011
900M will be completed to 65 bits by then by Lindee/d et al

[Christenson]

And what do you think GPU/mfaktc nuts, including myself, are about to do to you? (Hint: I think your predictions are pessimistic) With productivity 10x-100x that of CPUs on TF, enjoy!

[petrw1]

Originally Posted by Christenson

And what do you think GPU/mfaktc nuts, including myself, are about to do to you? (Hint: I think your predictions are pessimistic) With productivity 10x-100x that of CPUs on TF, enjoy!

Well NOT much yet but I am hoping. The reduction in days per 10M from 100M starting in November 2010 to 190M in April 2011 was only about 33% (30ish to 20ish days - and, yes, those are the official mathematical terms ); actually less than one would expect based on the reduced factor time per exponent from 100M to 190M. I don't know for sure at what rate GPUs usage has increased in that time frame but it appears, so far, to be slower than the reduction in regular TF'ers.

[Christenson]

In that case, I'll have to do some TF-LMH on my card. How many GHz days are being given out daily for TF-LMH?

[ET_]

Originally Posted by Christenson

In that case, I'll have to do some TF-LMH on my card. How many GHz days are being given out daily for TF-LMH?

http://mersenne-aries.sili.net/credit.php

Luigi

[petrw1]

Originally Posted by Christenson

In that case, I'll have to do some TF-LMH on my card. How many GHz days are being given out daily for TF-LMH?

What you do is up to you but the GPU cards can probably help more by advancing bit levels in the current LL ranges.

To your question: Very roughly.
In 8 months of 1xxM TF-LMH they processed about 2.36 Million Exponents at an average Ghz days per of .025 = 59,000 in 240 days = about 245 Ghz days / day.

[TheJudger]

Originally Posted by Christenson

In that case, I'll have to do some TF-LMH on my card. How many GHz days are being given out daily for TF-LMH?

Originally Posted by petrw1

What you do is up to you but the GPU cards can probably help more by advancing bit levels in the current LL ranges.

Yepp, I recommend to do "regular" TF on your GPU(s). TF-LMH assignments might be a bit "too short" for mfaktc, mfaktc loves long runs. Anyway mfaktc would work with short runs, too. I recommend to keep those TF-LMH for CPUs.

Oliver

[Christenson]

At 245GHz days/day being granted on TF-LMH, and 90GHz days/day on my one, medium speed GEForce GTX 440, it makes very little sense to do *any* TF on a CPU. A single high-end card might double or quadruple your overall progress.

Meanwhile, the slow GPU (GEForce 210) is doing a qualification test for the next release of mfaktc, and the GTX 440 is definitely advancing regular bit levels...but it's only been in service since this Sunday, and has yet to find any new factors.

[petrw1]

Originally Posted by Christenson

At 245GHz days/day being granted on TF-LMH, and 90GHz days/day on my one, medium speed GEForce GTX 440, it makes very little sense to do *any* TF on a CPU.

Every little bit helps the overall project.

I could similarly argue that since curtisc can to more LL in a day than I do in a year why do I even bother?

[Christenson]

Yes, but I don't think you or I can afford the hardware curtisc uses. The GTX440 cost all of $100 or so.

[NBtarheel_33]

Originally Posted by petrw1

Almost exactly 8 months ago at the end of Oct 2010 LMH got it's first 64-65 bit assignments in the 100M range.

If I make a big assumption that the LMH participation rate continues --- and that Monst continues to clear out 700M; Lindee/d et al clear out 900M and GIMPS Visualization continues in other ranges then "you heard it here first" ... LMH will:
- Reach 300M by mid September 2011
- Reach 400M by early October 2011
- Reach 500M by mid October 2011
- Reach 600M by early November 2011
- 700M will be complete to 65 bits by then by Monst
- Reach 800M by early December 2011
- 900M will be completed to 65 bits by then by Lindee/d et al
- Complete all exponents (above 100M) to 65 bits by year end 2011

Today (May 17th), LMH started handing out assignments in the 210M range. That's 10M in 18 days, or 180 days - six months - for 100M. So the ETA for the 200-299M range would seem to be late October.