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HutchNYC
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Re: New beta for type C

Kevin,

Quick question for clarification: Is the number of beta's per machine truly maxed at the number of cores per processor, or does it count virtual cores (hyper-threading) into that count?

Simply put, on an i7-920 which has 4 physical cores and can process 8 threads at once using hyper-threading, would the beta maximum be 4 or 8?

Thanks,

Hutch
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[Mar 23, 2010 3:17:51 PM]   Link   Report threatening or abusive post: please login first  Go to top 
HutchNYC
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Re: New beta for type C

I guess my machine just answered this for me. A 5th beta just downloaded, so I'm going to guess the answer to above would be "8".
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[Mar 23, 2010 3:21:25 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Randzo
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Slovakia
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Re: New beta for type C

System has no way to determine HT.
HT display 8 cores for OS.
[Mar 23, 2010 4:48:12 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: New beta for type C

looks like there may ba a problem WU

erlc_a100_pda004

both I and the wingman errored out on this one. Will have to see what the two replacements do, but from the times I would say it may be a problem.

Now the question is - what does this do to the "reliable" status of my rig if it is in fact a problem WU?
[Mar 23, 2010 4:57:55 PM]   Link   Report threatening or abusive post: please login first  Go to top 
TimAndHedy
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Re: New beta for type C

Looks like the change worked well.

All three of my machines participating in the HCC beta. Each ended up with 1 or 2, including my slower linux box. From the discussion on the forum it looks like it had wide distribution.

It would be interesting to look at your Host/User numbers after the HCC Beta. The Host numbers should change. Hard to say if the user numbers will but I don't think it matters as long as more hosts are in the mix
[Mar 24, 2010 2:47:58 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: New beta for type C

looks like there may ba a problem WU

erlc_a100_pda004

both I and the wingman errored out on this one. Will have to see what the two replacements do, but from the times I would say it may be a problem.

Now the question is - what does this do to the "reliable" status of my rig if it is in fact a problem WU?

On the question, if the device is [really really over over] reliable, the cruncher could have a 0.1% rating [lowest/best possible] which gives your rig about a dozen WU error leeway... and for each good result following an error it goes down again. I've recently attempted to show this in a table, found here: http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=17160
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[Edit 1 times, last edit by Sekerob at Mar 24, 2010 7:02:30 AM]
[Mar 24, 2010 7:00:34 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: New beta for type C

And my quad is in that select group... out of left field [nowadays a Bushism] a ts02 came in of the ps family (A type). Put it ahead of the queue last night and been running 8 hours now and at 16% so it will finish 6 days before deadline... at about 47 hours run time. Just one of these babies equals 60+ C types. Mind you taking quick calc, for the project there are about 611 C types for every A type and much much easier to get, once the techs put 350V on the conveyor belt.
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[Mar 24, 2010 8:35:07 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Hypernova
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Re: New beta for type C

Got one, just saw it.

BETA_ erlc_ e111_ se0000_ 0-- 617 Valid 17.03.10 19:21:26 19.03.10 09:49:00 2.45 67.3 / 57.7
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[Mar 24, 2010 8:56:35 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Ingleside
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Re: New beta for type C

On the question, if the device is [really really over over] reliable, the cruncher could have a 0.1% rating [lowest/best possible] which gives your rig about a dozen WU error leeway... and for each good result following an error it goes down again. I've recently attempted to show this in a table, found here: http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=17160

Hmm, <reliable_max_error_rate>0.001</reliable_max_error_rate> doesn't indicate the best possible error-rate is 0.001, even you're using a slide from the BOINC-2008-workshop, but this has negligible effects anyway so isn't worth discussing.

What kind of source you're using for handling errors in your nice, new table, is on the other hand still a mystery to me... confused

Now, according to your method to calculate, you'll example get, with 0.2% = 0.002 initial error-rate:
0.002 * 1.05 = 0.00201 and this is 0.201%, not a large difference, and one new validated task and you're reliable again.

My way to calculate on the other hand is this:
0.002 * 0.95 + 0.05 = 0.0519, this is 5.19%, and is a huge difference from 0.201%. Based on this calculation, you'll need 64 validated tasks to become reliable again.

As sources for my way of calculating error-rate, I've used the two links below:
This FAQ about Adaptive Replication also shows how the error-rate is calculated, and even it's using the more resent 0.1 and not the older 0.05 it should AFAIK be accurate in other regards.

Also, the code checked-into BOINC is here, there the old 0.05-code is shown in red, and the more resent code WCG possibly isn't using is 0.1 and green.

Oh well, since validation-errors is few and far between, in practice it likely doesn't matter how you calculate the errors... sleep sleep sleep
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"I make so many mistakes. But then just think of all the mistakes I don't make, although I might."
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[Edit 1 times, last edit by Ingleside at Mar 24, 2010 10:04:34 AM]
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