RIP DCTF.

[chalsall]

Originally Posted by petrw1

Is LL getting close to not keeping up?

To optimal levels? Yes.

Originally Posted by petrw1

Just to be clear on "breadth first" doesn't make sense. Are you implying it is better to:
1. Take all DC to 69, then 70 then 71 then 72
2. Take each lowest DC all the way to 72 ... this is where I currently am
3. Stop wasting time on DC and do LL instead

Option 3 first. Option 2 second. Option 1 if it amuses you.

[Mark Rose]

Originally Posted by chalsall

Further, it should be noted that doing the "breadth first" search many are doing may be fun, but it doesn't really make all the much sense.

Neither does having a 680 watt space heater under my desk consuming 1.8 gigajoules per month dividing numbers. ;)

That's about 25 kg of CO₂ per month into in the air based on the local energy mix.

[petrw1]

Originally Posted by chalsall

To optimal levels? Yes.

So when I see about 45,000 Cat 3 (Rounding 65-70M)
and about 25,000 Cat 4 (70-75M)

.... are these NOT all to optimal level; in other words were they released at a lower bit level but with available resources should be deeper?

Never mind, I can look it up ... VERY FEW exponents in the 6x - 7xM range are factored to the optimal 75 bits.

http://www.mersenne.info/trial_facto...ta/2/60000000/
http://www.mersenne.info/trial_facto...ta/2/70000000/

[petrw1]

Originally Posted by chalsall

Option 3 first.

I could move my 500GhzDays/Day there.

While I'd like to see DCTF die I'll go where most needed.

[chalsall]

Originally Posted by petrw1

While I'd like to see DCTF die I'll go where most needed.

LLTF is most needed.

[Mark Rose]

Y'all guilted me into option 2.

[LaurV]

Originally Posted by Xyzzy

What is the optimal LLTF strategy?

1. Buy 1000 GPUs (possibly Titans, or newer, possible in boxes with dual Xeonx...)
2. Install misfit
3. Profit

[retina]

Originally Posted by LaurV

1. Buy 1000 GPUs (possibly Titans, or newer, possible in boxes with dual Xeonx...)
2. Install misfit
3. Profit

I think you left out a step:

1.5 Install a new 4000A 3-phase incoming line

[axn]

Originally Posted by LaurV

possibly Titans

A Titan costs $1000, burns 250W and produces 400 GHz-day/day

A 980 costs $600, burns 165W, and produces 520 GHz-day/day

A R9 290X costs $400, burns 250W, and produces 600 GHz-day/day


Don't buy Titans for TF.

[petrw1]

Originally Posted by axn

A Titan costs $1000, burns 250W and produces 400 GHz-day/day

A 980 costs $600, burns 165W, and produces 520 GHz-day/day

A R9 290X costs $400, burns 250W, and produces 600 GHz-day/day


Don't buy Titans for TF.

My 970 was $450 (Canadian even) ... not sure what it burns ... produces 515 /day if I keep the room cold. :) It heat throttles itself.

[ET_]

Originally Posted by petrw1

My 970 was $450 (Canadian even) ... not sure what it burns ... produces 515 /day if I keep the room cold. :) It heat throttles itself.

a cold room in Canada means -20°C...