[QUOTE=Christenson;264803]Indeed...Bob's reply was quite civil.
Oh, and.....
:direction:[/QUOTE]

And I didn't imply otherwise.
Unfortunately a post or two has been deleted by whatever god
is currently in charge, so even less point in crying over spilt milk.

We are unanimous about moving this digression to a separate thread
(Primenet Forum the most appropriate place).
Start with my initial invitation for TF help, as UncWilly suggested.

Leave the Lounge and start talking turkey!

Suggested title:
"How can GPUs best accelerate the discovery of M48?"


David

Pot meet Kettle
 

:threadhijacked:[QUOTE=Uncwilly;264810]Yes indeed. There are 91 days left until we match the longest gap in the GIMPS era. And 114 days from hitting the average gap + 2 std dev.
10metreh has our next closest (non-expired) guess, 59,278,411 on 6/30/2011
And: makes the guesses look like a bad bet:
tom11784.....38,066,453 [strike]6/23/2007[/strike]
T.Rex...........38,500,000
PrimeCrazzy..39,999,999 [strike]9/1/2007[/strike]
wpolly..........41,991,811 [strike]4/19/2008[/strike]
lycorn..........41,999,999 [strike]11/30/2007[/strike]
Andi47.........42,000,000 [strike]8/1/2007[/strike]
edorajh........42,500,000 [strike]10/1/2009[/strike][/QUOTE]

[QUOTE=Uncwilly;264810]Yes indeed. There are 91 days left until we match the longest gap in the GIMPS era. And 114 days from hitting the average gap + 2 std dev.
10metreh has our next closest (non-expired) guess, 59,278,411 on 6/30/2011
And: makes the guesses look like a bad bet:
tom11784.....38,066,453 [strike]6/23/2007[/strike]
T.Rex...........38,500,000
PrimeCrazzy..39,999,999 [strike]9/1/2007[/strike]
wpolly..........41,991,811 [strike]4/19/2008[/strike]
lycorn..........41,999,999 [strike]11/30/2007[/strike]
Andi47.........42,000,000 [strike]8/1/2007[/strike]
edorajh........42,500,000 [strike]10/1/2009[/strike][/QUOTE]

At 868 not LL'ed once under [SIZE=2]M(43,112,609[/SIZE]), it is starting to look like the long, heavy tail under M(24,[SIZE=2]036,583)[/SIZE]. I think it's time to add
Countdown to All exponents under 50M LL'ed once
and
Countdown to All exponents under 60M LL'ed once
to the milestones page. Maybe also consider 50th percentile (just as many exponents not LL'ed below this point as are LL'ed above this point) LL point to the list.

Mentioning that we've gotten off track in a second direction was intended as an off-hand remark, a dry observation of the state of affairs to which I certainly contributed. And I'm OK with moving this digression to a thread of its own....

My bet: M48 =M(~55M)...date? 11/11/11.....

[QUOTE=davieddy;264808]I did, but someone has seen fit to delete it.

Stop playing God[/QUOTE]

Disagree with Bob's analysis all you like, but please do so without calling him or anyone else an arse or a 2-year-old. I understand you and Bob have a rather unpleasant history. Let it go.

And believe me, I do have better things to do with my time than playing God.

[QUOTE=davieddy;264811]
Leave the Lounge and start talking turkey!

Suggested title:
"How can GPUs best accelerate the discovery of M48?"

David[/QUOTE]
I, if personally in charge of the forum, probably would have leftt your posts, not knowing the ancient history...but be glad they are gone, unavailable for anyone else to discover your silliness....you were in a touchy mood, from the first time someone pointed out the change in thread direction.

Now, as for turkey, I hope P95 doesn't mind: I don't care if it *IS* in the lounge...... here's my technical analysis:
1) Fact: GPUs accelerating TF by factor of 128 = 7 bit levels =~10% fewer LLs. AND this takes away CPU cycles that could be doing LL, so it's not quite even this good.
Opinion: We need to finish mfaktc. That means
a) automating the assignment/reporting process
b) moving the sieving onto the GPU proper, so an old CPU can run a new GPU.

Opinion: We are being overwhelmed by TF capability at the moment.
Opinionated consequence: When the current wavefront reaches 70M (or maybe sooner) it's time to do more TF on anything that hasn't had an LL-D started on it in lower ranges. A few more of these will be knocked out with known factor results.

Opinion: The increase in TF power is relatively unimportant compared to other improvements. P95 isn't thinking about AVX instructions; he needs many Giga-Neuron Days to get that going, and, although almost invisible, it will make a more significant change in the rate at which exponents are proven composite.

Opinion: Putting P-1 on GPUs is moderately important.

Opinion: Maximising GPU usage on LL tests is the single most important upgrade, as it reduces the calendar/power cost of LL testing directly. I don't think you (davieddy) can contribute to the code technically, but you can contribute, as Rodrigo has committed to, by making the path easy for others that follow you in running the code by keeping a SHORT thread with the directions. Look up "putting it all together". Hopefully P95 has made that a sticky.

In a larger sense, this is what P95 has done with Primenet...

In the meantime, I keep hunting in various ways.....and am working on the technical part of mfaktc...

Babies out with the bathwater
 

[QUOTE=Prime95;264818]Disagree with Bob's analysis all you like, but please do so without calling him or anyone else an arse or a 2-year-old. I understand you and Bob have a rather unpleasant history. Let it go.

And believe me, I do have better things to do with my time than playing God.[/QUOTE]

Sorry George, but it's impossible to attempt to defend my posts once
someone (I presume you) has deleted them.

BUT:
I did not call him an arse. I said he he was talking thereoutof.
I did not call him a 2 year-old. I said a 2 year-old could see why
he was so way off the mark re optimizing TF/P-1.

The "baby" you flushed down the toilet was my simple observation
that a handful of GPUs could TF a few more levels, while comfortably
keeping pace with the LL wavefront.
Since programming GPUs is "work in progress", no need to think further
than exponents < 60M ATM.

Maybe subtlety of meaning/tone/humour gets lost while crossing the pond.
Especially westwards:smile:

David

[QUOTE=davieddy;264827]BUT:
I did not call him an arse. I said he he was talking thereoutof.
I did not call him a 2 year-old. I said a 2 year-old could see why
he was so way off the mark [/QUOTE]

You are correct in the characterization of your previous posts. I overstepped in my description of your deleted posts (some by me, some by another moderator). Nevertheless, these posts seem needlessly incendiary considering the past tensions between the two of you.

The moderators are merely trying to nip any flame wars in the bud. They were annoying to the combatants, the readers, and the moderators. Thanks for cooperating.

[QUOTE=Christenson;264826]I, if personally in charge of the forum, probably would have leftt your posts, not knowing the ancient history...but be glad they are gone, unavailable for anyone else to discover your silliness....you were in a touchy mood, from the first time someone pointed out the change in thread direction.

1) Fact: GPUs accelerating TF by factor of 128 = 7 bit levels =~10% fewer LLs. AND this takes away CPU cycles that could be doing LL, so it's not quite even this good.
......

I don't think you (davieddy) can contribute to the code technically, but you can contribute...[/QUOTE]

Cheers Christenson:smile:

David

PS remove your tongue from Bob's ****.

[QUOTE=Christenson;264816]My bet: M48 =M(~55M)...date? 11/11/11.....[/QUOTE]I have added it to my list.

Live by the sword...
 

[QUOTE=Prime95;264828]You are correct in the characterization of your previous posts. I overstepped in my description of your deleted posts (some by me, some by another moderator). Nevertheless, these posts seem needlessly incendiary considering the past tensions between the two of you.

The moderators are merely trying to nip any flame wars in the bud. They were annoying to the combatants, the readers, and the moderators. Thanks for cooperating.[/QUOTE]

I realise that if you use sarcasm/parody frequently, the
casual reader may not know whether you are joking or not.

When I referred to your "usual tact", I certainly meant it. Really.

I appreciate that Mod works in mysterious ways:smile:

David

Lighten the mood
 

[QUOTE=Uncwilly;264830]I have added it to my list.[/QUOTE]
[url=http://www.youtube.com/watch?v=A45xqLHccRo]I've Got a Little List[/url]
David