Relative Usefulness of Particular CPU types to Particular Projects

Odysseus
Odysseus
Joined: 17 Dec 05
Posts: 372
Credit: 19557274
RAC: 3285

RE: you can get the

Message 41345 in response to message 41339

Quote:

you can get the optimized client 5.4.9 here: http://members.dslextreme.com/~readerforum/forum_team/boincbeta.html

Be aware that this does not have any influence on the credit anymore, it just delivers higher benchmark results since it is Altivec-Enhanced.


Thanks for the link—and sorry: I thought you meant an optimized app. I don’t think I have any use for benchmark-tweaking, as I seem to be getting appropriate amounts of work most of the time.

Udo
Udo
Joined: 19 May 05
Posts: 203
Credit: 8945570
RAC: 0

RE: Also, your computer

Message 41346 in response to message 41344

Quote:
Also, your computer #217888 is not an Intel P4 at all. It is listed as an AMD 1700+. You don't seem to have any P4 2.0G Northwoods in your complete list of 7 machines. It's still working on S4 stuff and hasn't even started on the S5 yet. BTW, when it does start you are probably going to be in deadline trouble as you have left your cache too large and your BOINC client doesn't know (yet) how long these new results are going to take. It will only find that out when it finishes the first one and then there will be a sudden large re-evaluation upwards of how long all the others are going to take. You are almost certain to have work that you cannot complete within the deadline. You should reduce your cache to less than 1.0 days and update ASAP.

Hello Gary,

I have 7 computers registerd to E@H.
3 of them (314177, 472352 and 417623) are connected to the internet and therefore report correctly.
The other 4 computers are in reality 2 physical computers at my office. I'm allowed to run E@H but company policy restricts access and communication to the E@H servers through the firewall system. That's why I copy the BOINC folder, bring it home, and upload/download all WUs currently processed. So you only see the 'physical structure' of the 'network computer' (I don't use my notebook - Pentium M 1.6Ghz - to process WUs, just for uploading) not the real machine processing the WUs.
One of them is the mentioned Intel P4 2GHz (217888 and 589472), the other is a dual Xeon CPU 2.8GHz (470358 and 589361).
I have registered 2 hosts per physical computer to have some workload when I have copied the data for up/downloading (over night)...

but back to 'my strange findings':
AMD Athlon XP 1700+ takes 52000sec for a long WU
Intel P4 2.0 GHz takes more than 70000sec for a long WU

???why???

[edit]
the Xeon System takes 64000sec for 2 WUs (in HT mode), so 32000sec for a long WU is ok for me.
[/edit]

Udo

Fuzzy Duck
Fuzzy Duck
Joined: 3 Dec 05
Posts: 37
Credit: 936924
RAC: 0

Udo, Could you expand on

Message 41347 in response to message 41346

Udo,

Could you expand on transferring BOINC files between different machines. What files do you need to transfer?

Thanks,

FD.

Udo
Udo
Joined: 19 May 05
Posts: 203
Credit: 8945570
RAC: 0

RE: Could you expand on

Message 41348 in response to message 41347

Quote:
Could you expand on transferring BOINC files between different machines. What files do you need to transfer?

- stop all BOINC activity (Boinc client, service...)
- sort installation folder (:\\\\BOINC) by last changed date, newest files on top
- copy all other files EXCEPT files starting with boinc* (4 files) or files suffixed by *.dll (8 files)
- copy folder 'slots' and 'projects'

Udo

Gary Roberts
Gary Roberts
Moderator
Joined: 9 Feb 05
Posts: 5842
Credit: 109410314517
RAC: 35050168

RE: The other 4 computers

Message 41349 in response to message 41346

Quote:

The other 4 computers are in reality 2 physical computers at my office. I'm allowed to run E@H but company policy restricts access and communication to the E@H servers through the firewall system. That's why I copy the BOINC folder, bring it home, and upload/download all WUs currently processed....

OK, sorry, I wasn't aware of any of that. Boy, that's a hard way to increase your contribution :).

Quote:

but back to 'my strange findings':
AMD Athlon XP 1700+ takes 52000sec for a long WU
Intel P4 2.0 GHz takes more than 70000sec for a long WU

???why???

Because AMD's are much better at this than P4's :). I have some P4 Williamettes overclocked to 1.9 - 2.0 GHz. They do long results around 64K - 66K seconds. A Williamette is inferior to a Northwood so yours at 2.0GHz should be doing a bit better. Are you sure it's a Northwood? I thought they started a bit higher than 2.0G.

I also have quite a few AMD's from Duron 1600s to Athlon XP 2500+. I have a XP 2000+ which I think runs at 1600MHz normally. It is overclocked to 2.1GHz and does longs around 31K to 33K, ie, almost exactly twice as fast as a P4 similarly clocked. AMDs are very good for crunching EAH. For another data point I have a P4 2.66 Northwood 533 FSB that takes 49K seconds on longs. I reckon your P4 should be taking around 60K or so.

Cheers,
Gary.

Udo
Udo
Joined: 19 May 05
Posts: 203
Credit: 8945570
RAC: 0

RE: Because AMD's are much

Message 41350 in response to message 41349

Quote:
Because AMD's are much better at this than P4's :). I have some P4 Williamettes overclocked to 1.9 - 2.0 GHz. They do long results around 64K - 66K seconds. A Williamette is inferior to a Northwood so yours at 2.0GHz should be doing a bit better. Are you sure it's a Northwood? I thought they started a bit higher than 2.0G.

...with S4 app (even the optimised ones) the difference was not so big...

Udo

ersatzjim
ersatzjim
Joined: 9 Dec 05
Posts: 117
Credit: 3982042
RAC: 0

It's not just this that AMDs

It's not just this that AMDs are better at. They are significantly more efficient clock for clock than Intels ever were (well, almost ever, but let's just say for the last 6 years or so).

Udo, don't make the mistake of thinking that higher clock speed means faster computing when comparing AMD and Intel (except now with Conroe). Though it is true that certain cpus do slightly better on some projects than others. I'm sure that's what Gary was trying to say.

Intel has a better marketing dept. than AMD.

Those who don’t build must burn. It’s as old as history and juvenile delinquents.
Ray Bradbury - Fahrenheit 451

Martin P.
Martin P.
Joined: 17 Feb 05
Posts: 162
Credit: 40156217
RAC: 0

RE: It's not just this that

Message 41352 in response to message 41351

Quote:

It's not just this that AMDs are better at. They are significantly more efficient clock for clock than Intels ever were (well, almost ever, but let's just say for the last 6 years or so).

Udo, don't make the mistake of thinking that higher clock speed means faster computing when comparing AMD and Intel (except now with Conroe). Though it is true that certain cpus do slightly better on some projects than others. I'm sure that's what Gary was trying to say.

Intel has a better marketing dept. than AMD.

And the Mac G5 is even faster then the AMD. Look at the data I provided earlier: http://einsteinathome.org/goto/comment/41334

Philip Martin Kryder
Philip Martin Kryder
Joined: 8 Apr 06
Posts: 9
Credit: 15035
RAC: 0

Please help me understand

Please help me understand what is going on.

Below I have listed two Einstein results.
One (36046350) required only 317.3776156 CPUseconds per Work Unit.
The other (35212981) required 2100.389294 CPUseconds per Work Unit.

Any likely explanations?
Both were run on the same computer.

Udo
Udo
Joined: 19 May 05
Posts: 203
Credit: 8945570
RAC: 0

RE: Please help me

Message 41354 in response to message 41353

Quote:

Please help me understand what is going on.

Below I have listed two Einstein results.
One (36046350) required only 317.3776156 CPUseconds per Work Unit.
The other (35212981) required 2100.389294 CPUseconds per Work Unit.

Any likely explanations?
Both were run on the same computer.

normally I would ask if this computer is a notebook with an Pentium Mobile CPU.
My notebook reduces CPU speed if running on batteries...
But your host is a celeron 2.5GHz...

I have no idea why a short WU from h1_0192.0_S5R1__4* took 6500 sec one time and more than 43000 the other time...

Udo

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.