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Forums » Tech and Talk » Computing Clubs » Team Discovery » [WCG] 8 Core Xeon not crunching at full capacity
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[Happy Birthday] Gooiool (9-28) »
« TSC & WCG Milestones and Climbers for 09/27  
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HiVolt
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 [WCG] 8 Core Xeon not crunching at full capacity


Usage when first started
 

Usage after 5 seconds running
 
Click for full size
How long it takes per WU

CPU Benchmark
Click for full size
Machine Specs
I've got a new 8 Core 2.8 Xeon Mac Pro here at work for a week or so now. Of course I loaded BOINC on it, and I expected it to crunch like a horse... However, something's not right...

Whenever I start Boinc, the CPU usage spikes to full on all 8 cores, but 5 seconds later it drops and settles to 84-85%. I've deleted, reinstalled BOINC, and it continues to do this. The work units take a very long time per core. There is no other process eating up any CPU time. I have another Mac Pro except it'a 4-core, and it purrs along fine at full cpu load.

Attached are some screenshots.

Any help would be appreciated.
--
,,!,,('-'),,!,,


lilhurricane
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edit:
September 16th, @02:00PM

I'd like to say maybe the project assumes you have a strong beast of a computer & so is sending you the hardest work units to find cures...but I'm sure that's not it

I'm not familiar w/ Macs so I can't help..maybe we have a member that uses one that can assist?

Congrats on your new machine, Martin
I'm sure there's a reason & you'll find it.

... can always ask at WCG forums as well (in Boinc Support), if no one here figures it out

»www.worldcommunitygrid.org/forum···forum=83

Edit: maybe ajeb See Profile can help?


Ray422
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edit:
September 16th, @02:16PM

reply to HiVolt
Sounds like some kinda throttling, yes?

Just some food for thought...

Does the cpu speed reduce simultaneously with the cpu percentage? Any change in temperature? Any change in multiplier?
--Disable intel speedstep?

I know nothing about a mac, does it have an internal bios throttle like...
Biostar has....cool & quiet
Gigabyte has....C1e (enhanced halt)
Asus has....Same, I think (I would have to look)

I think TD member Ajeb has that same machine, perhaps he can help?

EDIT: Another thought. Could that machine have defaulted to a boinc setting that allows a lesser cpu percentage. I have had that happen to me before. You might check the maximum CPU percentage usage setting in wcg/boinc?
--
Things I like - Team Discovery - Quads©3.4ghz - Strawberry Ice cream



HiVolt
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The Mac has no configurable options like PC boards do... I have done a video encoding test and all 8 cores are fully utilized, so it's not something related to the machine.

I have checked BOINC throttling in the options, and it's set to use 100% cpu and all the processor cores.
--
,,!,,('-'),,!,,


HiVolt
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I've PM'd ajeb See Profile, hopefully he has a couple of minutes to take a look.

Thanks!
--
,,!,,('-'),,!,,


Dersgniw
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reply to HiVolt
said by HiVolt See Profile :

I have checked BOINC throttling in the options, and it's set to use 100% cpu and all the processor cores.
Checked it on the client options (not the website), right?
--
I Smell Cures! -- Our Hope


HiVolt
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said by Dersgniw See Profile :

said by HiVolt See Profile :

I have checked BOINC throttling in the options, and it's set to use 100% cpu and all the processor cores.
Checked it on the client options (not the website), right?
Yep! I'm somehow thinking the BOINC version for Mac is not that 8-core friendly... on the 4-core Mac running the exact same OS it works perfectly.
--
,,!,,('-'),,!,,


glennaxl
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reply to HiVolt
Have you checked this?
System Prefs
->Energy Saver
->Options
->Processor Performance

It should be set to "Highest".


HiVolt
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said by glennaxl See Profile :

Have you checked this?
System Prefs
->Energy Saver
->Options
->Processor Performance

It should be set to "Highest".
Pretty sure I did, but I don't think there is such an option on a Mac Pro, only on the laptops or imacs/minis.

I'll double check tomorrow though.
--
,,!,,('-'),,!,,

ajeb
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reply to HiVolt
Hey,
I've had my MAC PRO for about a month.

I'm running near 100% on all eight cores.

Check your energy saving panel. WCG runs at a very low priority. Just running BOINC in not enough to keep the computer from going to sleep, so make sure the computer is in "never" going to sleep and uncheck "Put hard drives to sleep.."

The hard drive thing was slowing me down when I started up.

I'm also running a different version of BOINC than you. I'm still on 5.10.45, I always wait a bit to upgrade to make sure the bugs are worked out.

Hope that helps. FYI..Getting about a 4300 RAC on the machine and that spec is still climbing.


lilhurricane
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edit:
September 17th, @11:28AM

 reply to HiVolt
Great suggestions everyone!

And thanks glennaxl See Profile & ajeb See Profile

..your "things to check" on Macs are now added to our FAQ

»Team Discovery WCG BOINC FAQ »[Macs] How to Make Sure You're Running at Peak Efficiency

Edit: Let me know if there's anything else


HiVolt
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edit:
September 17th, @11:57AM

reply to ajeb
Thanks... I already had the sleep settings disabled, and it doesn't seem to make a difference if they are on or off here.

Anyway, I just ran Activity Monitor and it seems that at the exact time the CPU load drops to from 100 to 85, the System percentage goes up. I dont know what that means though.

Attached is the graph. Green is User %, Red is System %.
--
,,!,,('-'),,!,,


Dogfather
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edit:
September 17th, @12:34PM

I'm assuming you've shown yourself "all processes" and not just "my processes" to see if something else is taking up the other 15%.

Also what happens if you open a 9th crunching instance (if you can do such a thing)?

There is also uncertainty principle in monitoring this usage but it shouldn't be anywhere near 15%. In my quad activity monitor for example takes 1.5% typically.

ajeb
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Skeedatl is right...that 15% is going somewhere into the system. You should be able to find in all processes. There was a huge system update just released..is it downloading in background? Though I can't see that taking up that much cpu.


HiVolt
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This happened before the 10.5.5 also. I have looked under All Processes, and I don't see it. Here's a screenshot.
--
,,!,,('-'),,!,,


HiVolt
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And here's output from "top" in terminal.


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,,!,,('-'),,!,,


bbarrera
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Next time run "top -o cpu" to sort highest CPU processes first.

Might want to check the 'nice' level of BOINC client and renice if possible. I've never understood the Mac OS X process scheduler, and there is a website with some good info (believe it is Amit Singh of Google).


HiVolt
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said by bbarrera See Profile :

Might want to check the 'nice' level of BOINC client and renice if possible. I've never understood the Mac OS X process scheduler, and there is a website with some good info (believe it is Amit Singh of Google).
Can you explain how do I go about doing that?
--
,,!,,('-'),,!,,


Dogfather
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edit:
September 17th, @05:05PM

»www.macosxhints.com/article.php?···85034927

I've also see a few utilities in my Google search like BeNicer »www.versiontracker.com/dyn/morei···sx/16534 that claim to make the process a bit quicker.

EDIT - Just toyed with BeNicer and it may not like Leo...I get some errors and VT showed it only supported Tiger and earlier.

ajeb
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This can't be this hard...lol.

I'm running 99.3% to 100% on all eight cores. My process list looks the same as yours. The only thing seems to be that I'm using an older version of BOINC.
-
Forums » Tech and Talk » Computing Clubs » Team Discovery[Happy Birthday] Gooiool (9-28) »
« TSC & WCG Milestones and Climbers for 09/27  
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