Posts by Oz


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1) Message boards : Number crunching : AP credit, can someone expain this? (Message 1545295)
Posted 23 hours ago by Profile Oz
When Astropulse v7 is released the screams will begin a new I expect.


Astropulse V.... 7... ???!!!!!

Ooooooooooooooh noooooooooooooo!
2) Message boards : Number crunching : AP credit, can someone expain this? (Message 1545051)
Posted 1 day ago by Profile Oz
AAAaaaaaaaaaaaaaaaaaarrrrrrrrrrrrrrrrrrgggggggg!!!!

Thanx for letting me whine...
3) Message boards : Number crunching : AP credit, can someone expain this? (Message 1545049)
Posted 1 day ago by Profile Oz
Just so I am clear on this, the server guesses the performance of the system and if it guesses your system is slow, gives more credit - unless it can't decide - then it uses actual flops, yes?

If that's it, it doesn't work - the RAC on my 2.0 GHz dual core, GTX 660 (2GB ram) is constantly higher than my 2.2 GHz dual core, GTX 770 (4GB ram) and as Yosemite Sam so succinctly puts it, "that just ain't right..."
4) Message boards : Number crunching : Considering new Graphics card (Message 1545042)
Posted 1 day ago by Profile Oz
Go Blurf!!!


Thx for coming out yesterday--great time and appreciate the advice!!


No worries, a good time was had by all (and I notice your RAC is climbing nicely)
5) Message boards : Number crunching : AP credit, can someone expain this? (Message 1545036)
Posted 1 day ago by Profile Oz
Wow, take a look at 3636714988 and 3636594228 - returned within 8 hours of each other, both with 0.00% blanking, both ran in a little under 6k seconds with about 2k CPU time but one yielded 312 credits and one yielded 832. How can one possibly do that? A random number generator? Magjic 8-ball? There are many other examples on my machines which also include tasks with similar credit but 200-300% differences in run time...
Flop count is used for verification, right? Why isn't credit equal to flops divided by a constant?


The answer is indeed a random number generator, called CreditNew.

Read about it here: http://boinc.berkeley.edu/trac/wiki/CreditNew


Ok, I read it, it obviously does not work as stated, if it did, similar jobs would only vary a few percent on the same machine - I could even see a 60-150% range to cover angles and that sort of thing. I could get more consistent credit to work numbers throwing darts blindfolded (slight hyperbole) - I mean it worked more or less okay when they cut the credit in half but now it's just gone mad...
6) Message boards : Number crunching : Considering new Graphics card (Message 1544845)
Posted 2 days ago by Profile Oz
Go Blurf!!!
7) Message boards : Number crunching : AP credit, can someone expain this? (Message 1544839)
Posted 2 days ago by Profile Oz
Wow, take a look at 3636714988 and 3636594228 - returned within 8 hours of each other, both with 0.00% blanking, both ran in a little under 6k seconds with about 2k CPU time but one yielded 312 credits and one yielded 832. How can one possibly do that? A random number generator? Magjic 8-ball? There are many other examples on my machines which also include tasks with similar credit but 200-300% differences in run time...
Flop count is used for verification, right? Why isn't credit equal to flops divided by a constant?
8) Message boards : Number crunching : Considering new Graphics card (Message 1541533)
Posted 7 days ago by Profile Oz
Hi, Blurf,

I travel regularly throughout upstate NY, and would be more than happy to help you out if I can, Also, I'm interested in the 460... let me know.
9) Message boards : Number crunching : After editing app_info GPU usage go to 45% (Message 1541512)
Posted 8 days ago by Profile Oz
(Crossposted)

Just to be ABSOLUTELY clear, the recommendation of assigning one CPU core per AP task is properly accomplished by setting:

ngpus .5
ncpus 2

or

ngpus .33
ncpus 3

or does setting ncpus=1 reserve one core per AP launch independent of the ngpu setting?
10) Message boards : Number crunching : i7 4770K overheating when running seti@home (Message 1541505)
Posted 8 days ago by Profile Oz
Just to be ABSOLUTELY clear, the recommendation of assigning one CPU core per AP task is properly accomplished by setting:

ngpus .5
ncpus 2

or

ngpus .33
ncpus 3

or does setting ncpus=1 reserve one core per AP launch independent of the ngpu setting?


(BTW, I have been using Arctic Silver for many years. Quite literally hundreds of builds, stock to massively overclocked. On the systems I have cleaned and changed, I have always observed at least a 1-2 degree Celsius temperature drop although I suppose this could be attributed to cleaning and careful and sparing application. I am currently using it on GPUs as well. My Q9650 3.0 GHz is running S@H 24/7 clocked to 4.02 Ghz with peak core temps never exceeding 155F, ave temps ~130F)
11) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1538166)
Posted 13 days ago by Profile Oz
AP units are being splat, next stop, higher RAC junction...
12) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1534437)
Posted 21 days ago by Profile Oz
Ready to send (MB) has dropped below results received in the last hour. Hopefully, this will be addressed in today's maintenance.
13) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1514880)
Posted 71 days ago by Profile Oz
Free-DC seems to have become senile. Doesn't know anything about any of my boxes.
14) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1511740)
Posted 80 days ago by Profile Oz
Aah, lovely verbage... being American, I am of course, confounded by English.

One of my favourite phrases, brought to you courtesy of the United States Air Force:
The (mechanism in question) experienced catastrophic non-linear structural exasperation leading to energetic disassembly.
Use it carefully.

Cheers
15) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1511628)
Posted 80 days ago by Profile Oz
You are a better man than I, I barely made it through calculus.

And I would not want to burn you at the stake, particularly for suggesting a solution - any solution, but after the last attempt to re-adjust things by credit value manipulation, many folks here are - shall we say - a bit "sensitive".

I say, let's just keep crunching!
16) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1511624)
Posted 80 days ago by Profile Oz
Wow, sorry mate, all the experience I have is with control of mechanical and electronic system in the real world. I had to have solutions that worked. The stuff I think you are talking about (and personal do not understand) is what gets applied to things like the demultiplexing of cell phone audio, which works on paper but not in practice, at least not well or I could stop saying "what? what? Please repeat that. Can you spell it? Send me an Email. Email. E M A I L... Edward, Michael, Albert, Irving, Larry... yeah - bye."
But if you have a solution, write the code and send it to the Berkeley team, I'm sure that they would like a solution as much as the rest of us. Be warned, if you are proposing a solution that varies work unit credit, you may find you will be burned at the stake.

Cheers ;^)
17) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1511612)
Posted 80 days ago by Profile Oz
While I agree that the RAC activity follow well understood models of improperly damped or controlled systems, it should be noted that, while the operator(s) control the work load, the systems capacity to perform work is completely variable. Therefore, critical damping of the system can only be accomplished by limiting the available "load" to the minimum anticipated capacity - and no one would like that.
An extreme example, limiting all users to one WU per day would smooth things out quite nicely.
18) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1511246)
Posted 81 days ago by Profile Oz
The credit meter of my team is stuck for a few hours :(
It would not be a problem somewhere ?
The SSP doesn't detect any abnormality.
Houston ?


Hi,

This is likely because AP units are being split and distributed. Since they are larger and take much longer to complete, it becomes more likely that one will be waiting on one's wingman for a report. I find that my scores go down for a few days when AP units become available until the "pendings" catch up. This ripple effect would not occur if AP units were always available, but that's not how it is.

Cheers!
19) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1509912)
Posted 84 days ago by Profile Oz
Whatever it was, it's done downloading. {Maybe it was the latest patch for Wwindows (TM)(C)(R) 8)
20) Message boards : Number crunching : Panic Mode On (88) Server Problems? (Message 1505055)
Posted 96 days ago by Profile Oz
Sorry Speedy, it wasn't meant as a correction or a barb. It made me smile and I enjoyed the thought of S@H specific word usage. I thought others might find the concept as novel as I did. And if so, you will be the one that set it off! Good on 'ya.


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