WUProp Hours Question

[Maxwell]

I'm in a weird situation where there are a few projects that I actually DON'T want credit for...

I'm #1 in the world in Bozos (http://stats.free-dc.org/stats.php?page=mmakers&subproj=bozos), which, while meaningless in the grand scheme of things, is something I don't want to give up. So for the seven projects where I have over 100M and less than 101M, I don't want more credit, as that would bump those projects off the Bozos list for me.

So, hypothetically for now, at least, if I were to crunch Primegrid (for example) under the Hydra account, but had WUProp going under my account, the hours would count for me, right?

[zombie67]

Right

[Bryan]

I only add projects that I intend to take to 1M on my main account. I have a couple of "junk" accounts that I use for things like Sztaki etc that will never have high credits. Running WuProp on the main acocunt gets me the hours.

The nice thing about the junk account is if you do ever get enough credits in one of the "junk" projects you can change the email address to your main account and move the credits over ... as long as the main account has never had the project setup. I've done this a number of times.

[Maxwell]

Thanks, guys.

And good to know about that trick, Bryan - I had thought about it, but wasn't sure it would work. Glad to hear it does.

[Maxwell]

Here is another question: How are WUProp hours calculated? It is wall clock time, or is it based somehow on CPU time? I'm asking because I'm running a slow quad core laptop for hours only. If I set it to ncpus=8, would I accrue WUProp hours twice as fast?

[zombie67]

I believe it is wall time for each task. So yes, running 2x the tasks, taking twice as long, should do the trick.

[Bryan]

I don't think it will it will work. I'm may be mistaken, but I think the CPU tasks work off of CPU time. I think I tried it quite a while ago and WuProp saw through my feeble attempt :D You can certainly do that on GPUs and it does work.

[Maxwell]

I don't think it will it will work. I'm may be mistaken, but I think the CPU tasks work off of CPU time. I think I tried it quite a while ago and WuProp saw through my feeble attempt :D You can certainly do that on GPUs and it does work.
That's what I was afraid of... I have noticed that the hours don't seem to be ticking up as fast as I was thinking they should be.

[zombie67]

I am pretty sure it is wall time, not CPU time. Otherwise, We s=would never be able to get any stars for the quake projects (for example).

[Maxwell]

I am pretty sure it is wall time, not CPU time. Otherwise, We s=would never be able to get any stars for the quake projects (for example).
Could it be that they record run time for NCI projects? I just checked my activity for the computer in question, and, for the CPU projects, I had much closer to 96 WUProp hours (24 x 4 cores) in any given 1 day period while running NCPUS=8 than I did 192 WUProp hours (24 x 8 threads).

[zombie67]

Another way would be to run a VM with 4 threads on top of your native client with 4 threads. They will all run at half speed, taking twice as long, but they will think they are running at full speed.

[Bryan]

I am pretty sure it is wall time, not CPU time. Otherwise, We s=would never be able to get any stars for the quake projects (for example).

Interesting puzzle Z!

Not the same question, but back when they were wrapping up Suduoko I decided to get some WuProp hours. It was at the end and work was hard to come by and when I got it I blew through them. So I UNDERCLOCKED my computers to 2.0GHz (from 4.2) and made the suckers last longer :D It worked like a charm!

[Maxwell]

Another way would be to run a VM with 4 threads on top of your native client with 4 threads. They will all run at half speed, taking twice as long, but they will think they are running at full speed.
I realize this reply is coming ~10.5 months later, but I have this question again. Do you double up your hours you get when you run a VM on top of a native client? Has anyone tried this recently?