Posts by NewtonianRefractor

1) Message boards : Number crunching : some results not uploading, others are (Message 75452)
Posted 24 Apr 2013 by NewtonianRefractor
Post:
I have results from some tasks that fail to upload, even though other results are uploading just fine.

The stuck uploads are like this for at least 24 hours already.

Restarting Boinc did not help with this.

Here's a pic of what I'm talking about:



------------------------------------------------------



Here's a link to the computer if that's helpful.
2) Message boards : Number crunching : Several workunits stuck on computer, had to manually abort (Message 72622)
Posted 29 Mar 2012 by NewtonianRefractor
Post:
I have a linux computer running scientific linux attached to this project(host 1526762). Recently I had at least 2 workunits that appeared to be 'stuck'. They each ran for over 40 hours and the percentage was stuck somewhere between 60% and 75%. I had to manually abort them.

Here is one of them: wuid 450705292. The interesting thing is that the CPU time is only reported as 19,736.05 seconds. When I checked the computer the particular core of the cpu that the WU was assigned to was completely idle.

Since I have that happen twice, and I only check on this computer every few weeks I aborted the rest of the Rosetta workunits and switched it to another project (workd community grid) for now.
3) Message boards : Number crunching : validate error (Message 70327)
Posted 12 May 2011 by NewtonianRefractor
Post:
I have a workunit that had a validate error aginst 2 other machines.

wuid=379604240

What does that mean exactly?

I thought for Rosetta all the machines should produce different results anyway because of the randomness seeded into the calculation?
4) Message boards : Number crunching : I won lowest rmsd :) (Message 62037)
Posted 1 Jul 2009 by NewtonianRefractor
Post:
Here we go:





:)
5) Message boards : Number crunching : Rosetta 5.98 using full CPU resources (Message 60700)
Posted 17 Apr 2009 by NewtonianRefractor
Post:
Apologies if you already know this, but in case not, there's an option to run only when the screensaver is showing


Where is this option to run only when the screensaver is showing? I can't find it anywhere...


Best



In BOINC manager Go to the Advanced Menu and then click the Preferences Option. On the Processor Usage Tab, uncheck while computer is in use and then set the "only after computer has been idle for" box to whatever your screensaver time out is or some time like 5 or 10 minutes probably would work as well.

Brian


Sorry but that doesn't work. On my machine BOINC thinks the machine is idle when I'm watching a HD movie and when it starts its crunching the movie starts stuttering. I'm looking for a way to make the screensaver trigger the number crunching process. The screensaver won't come on when I'm running a fullscreen app so that would solve the movie stuttering.

Best


Just crank up the process priority on the movie program.
6) Message boards : Number crunching : Discussion of the new credit systen (2) (Message 59506)
Posted 10 Feb 2009 by NewtonianRefractor
Post:
Credits are a rank of how many computers each of us have access too. I see my stats are blowing you out of the water, does that make me a better person, or even a better cruncher? NO IT DOES NOT!!!


That is wrong. It says that you contributed more to this project than somebody else.
7) Message boards : Number crunching : Problems with Minirosetta v1.54 (Message 59382)
Posted 6 Feb 2009 by NewtonianRefractor
Post:
can someone please explain what happened here?

Here is another one.
8) Message boards : Number crunching : A bunch of page faults (Message 58127)
Posted 23 Dec 2008 by NewtonianRefractor
Post:
I was wondering why there were so many Page Faults in minirosetta 1.47 process? Is that a bad thing?


To clarify, the task has been running for total of 14 cpu hours and has accumulated 59,000,000 page faults.

At the same time a climate prediction work unit with a 13 cpu hour time has accumulated only 18,400. Why is the re such a huge difference?
9) Message boards : Number crunching : A bunch of page faults (Message 58107)
Posted 22 Dec 2008 by NewtonianRefractor
Post:
I was wondering why there were so many Page Faults in minirosetta 1.47 process? Is that a bad thing?
10) Message boards : Number crunching : Minirosetta v1.47 bug thread. (Message 58088)
Posted 21 Dec 2008 by NewtonianRefractor
Post:
The graphics for one of my Minirosetta 1.47 work units crash. If I click on the show graphics button under boinc, a windows is launched, but it remains black and to close it I have to physically end the unresponsive process. The work unit runs fine though. It's under boinc 6.2.19
11) Message boards : Number crunching : task does not respond to calculation suspend (Message 57762)
Posted 10 Dec 2008 by NewtonianRefractor
Post:
So now the WU errored out.

It's this: http://boinc.bakerlab.org/rosetta/workunit.php?wuid=193121757
12) Message boards : Number crunching : task does not respond to calculation suspend (Message 57751)
Posted 9 Dec 2008 by NewtonianRefractor
Post:
I have a task that computes fine but does not respond to activity suspend in boinc. Does anyone have same problems?
13) Message boards : Number crunching : Result duration correction factor? (Message 56767)
Posted 7 Nov 2008 by NewtonianRefractor
Post:

That still doesn't explain why a 2.0 Ghz Core2 is ~200% faster than a 1.6 Ghz Turion X2.

where are you getting your numbers for that from?

your Turion is getting around 25 credits per 10k-seconds and your Core2 is getting 40 credits per 21.7k seconds (both per-core). That's 9 credits per hour against 6.6 credits per hour (sample size of 1 on the core2...).


934880 Core 2 Duo @ 2.0 Ghz: 51.49 credits for 10,547.06 seconds
934895 Turion x2 @ 1.6 Ghz: 22.25 credits for 10,147.02 seconds.

WTF?
14) Message boards : Number crunching : Result duration correction factor? (Message 56764)
Posted 7 Nov 2008 by NewtonianRefractor
Post:
On my AMD machine Result duration correction factor is 2.9. On an Intel machine it is 0.49 Why is there such a huge difference? Is the application just not optimized for AMD processors?

The application isn't optimised for a specific platform over another. I believe the RDCF is affected by the amount of time the machine is not running the project and so isn't comparable between machines unless they're both running rosetta the same amount.


Also, the AMD computer claims more credit per work unit than it is granted. Why is that?

This is because the claimed credit is based on the benchmark which is too basic to give a realistic measure, whereas granted credit is based on work done. AMD CPUs have strong FPU performance which inflates the whetstone benchmark score artificially. The claimed credit can be ignored...


That still doesn't explain why a 2.0 Ghz Core2 is ~200% faster than a 1.6 Ghz Turion X2.
15) Message boards : Number crunching : Result duration correction factor? (Message 56756)
Posted 7 Nov 2008 by NewtonianRefractor
Post:
[Bump]
16) Message boards : Number crunching : Result duration correction factor? (Message 56721)
Posted 5 Nov 2008 by NewtonianRefractor
Post:
On my AMD machine Result duration correction factor is 2.9. On an Intel machine it is 0.49 Why is there such a huge difference? Is the application just not optimized for AMD processors?

Also, the AMD computer claims more credit per work unit than it is granted. Why is that?
17) Message boards : Number crunching : time per workunit (Message 56696)
Posted 4 Nov 2008 by NewtonianRefractor
Post:
What is the science difference for allowing 24 hours vs say 4 hours per workunit.

What is more beneficial to the project: crunching 1 WU for 24 hours or 4x6 hour WU in the same time?

same result for the project each task contains a number (1+) of models - the longer the run, the more models contained. If you're machine runs 24/7 then you might want to increase the run-time to reduce bandwidth use (although feet1st pointed out this isn't always the case), but longer run times mean you risk losing more work if the task errors out (which doesn't happen (to me) often, fingers crossed!)

HTH
Danny


If you already downloaded the models and have them on your computer and then change the time on the website and update, the lengths for these models changes as well. So I am thinking there is something else here?
18) Message boards : Number crunching : time per workunit (Message 56656)
Posted 3 Nov 2008 by NewtonianRefractor
Post:
What is the science difference for allowing 24 hours vs say 4 hours per workunit.

What is more beneficial to the project: crunching 1 WU for 24 hours or 4x6 hour WU in the same time?
19) Message boards : Number crunching : WU aborted with errors (Message 56589)
Posted 1 Nov 2008 by NewtonianRefractor
Post:
Just attached a new computer to the project and had 4 WU error out:

186171062
186137868
186139181
186139179

Can somebody take a look?






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