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-   -   GPU to 72 status... (https://www.mersenneforum.org/showthread.php?t=16263)

lycorn 2013-09-20 10:56

[QUOTE=chalsall;353492]Actually, compared to some of the answers I've been receiving recently, this is actually passable... 8-)[/QUOTE]

LOLOL...
+1

kladner 2013-09-20 11:52

[QUOTE=chalsall;353492]Actually, compared to some of the answers I've been receiving recently, this is actually passable... 8-)[/QUOTE]

Actually? :devil:
EDIT: But seriously, I agree that it's an amusingly inventive answer.

EDIT2: [QUOTE].....travelled to the year 2033, asked the robots (who wiped out mankind).....[/QUOTE] The proper Futuristic expression is "Killed.All.Humans."

blahpy 2013-09-20 12:24

[QUOTE=VictordeHolland;353482]travelled to the year 2033 [...] travelled back into time[/QUOTE]

Did you happen to come back for an IBM 5100?

VictordeHolland 2013-09-21 09:34

[QUOTE=blahpy;353582]Did you happen to come back for an IBM 5100?[/QUOTE]
They wouldn't let me travel back that far, something to do with the grandfather paradox and alternate timelines.... :-(

Axelsson 2013-09-21 15:18

[QUOTE=blahpy;353582]Did you happen to come back for an IBM 5100?[/QUOTE]
I just got a permission for time travel, I sent it to myself in two weeks when I will fetch a Datapoint 2200. Is there a prime95 port for it or could I only run factoring work on it? With 8K of serial ram I guess P-1 is out of the question? :smile:

Göran

blahpy 2013-09-21 23:10

[QUOTE=Axelsson;353706]I just got a permission for time travel, I sent it to myself in two weeks when I will fetch a Datapoint 2200. Is there a prime95 port for it or could I only run factoring work on it? With 8K of serial ram I guess P-1 is out of the question? :smile:

Göran[/QUOTE]

Huh? I thought you would be [URL="http://en.wikipedia.org/wiki/John_Titor#Outline"]taking it back with you...[/URL]

ixfd64 2013-09-22 17:34

You're violating the Temporal Prime Directive!

kracker 2013-09-22 22:30

@chalsall:
Any "status" on those LL and DC charts? :smile:

sonjohan 2013-09-24 14:38

After an extended 'time-off' (holiday, warm weather, etc) I have restarted MISFIT and have rejoined the gpu72 workers.
I shut it down for a long time because I noticed that the fans started to make too much noise.
With a lower temp, they activate less frequently and I can live with the noise it makes now.

flashjh 2013-09-24 16:05

Welcome back!

davieddy 2013-09-24 17:02

[QUOTE=diamonddave;352216]Is there a reason that the 62M LL range at 73 bit never gets assigned?[/QUOTE]
[QUOTE=garo;352229]I think we should release 62M at 73 bits. People are being assigned LL tests in the 66M range. Clearly we are having trouble keeping the pace. A bit of breathing room is required.[/QUOTE]
[QUOTE=chalsall;352231]Is that an order Commander? My instruments show that things are cool at 74, despite some stray impacts...

Can we wait for Captain Jean-Luc Picard (read: George) for the final authoritative order? The firing solution is programmed... (That's meant to be serious, and funny, at the same time....)[/QUOTE]
[QUOTE=kracker;352233]Then why are we getting 66M exponents for testing? Where is the actual "wave" at now?[/QUOTE]
[QUOTE=Prime95;352245]I do not have a strong opinion. If we are currently assigning 66M LLs that are only TFed to 73, then we should be assigning the 63Ms instead. If the 66M assignments are TFed to 2^74 and Chris believes he has the firepower to both keep ahead of the LL wavefront and get the 63Ms to 2^74, then I'm OK with holding the 63Ms back.[/QUOTE]
[QUOTE=chalsall;352254]Copy. Thank you.
And trust us....[/QUOTE]
[QUOTE=garo;352830]Looks like Primenet is assigning 67Ms. SPE chalsall?[/QUOTE]
[QUOTE=chalsall;352833]Nope.
Instead, very careful management. Note all those assignments are TFed to at least 74, and P-1'ed.[/QUOTE]

Chalsall claims that TF to 74 bits is just keeping pace with LL demand because (for the last few months) every LL assignment has been TFed to 74.
The reason that LLs are assigned in the 67M range is that the TF to 74 effort sprawls that high (for no good reason as far as I can see).
This can't be helping new LL assignments, but there is a fatl flaw in Chalsall's argument which is about to become apparent to all:
Nearly all the exponents being TFed to 74 are already TFed to 73.
The supply of these is approaching exhaustion, and TF from 71 to 74 will not keep pace.
That said, if we settle for TF to 73, we could expect to gradually build up a buffer of about 50,000 exponents between TF and LL assignment.
Then we can change to 74 bits, and hope the 73bit buffer doesn't get used up. I estimate that this moment might occur at exponents around 70M.

By 90M it might be time to go to 75 bits.

There is notime toulouse: cut your losses and TF to 73 now.

David


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