why are two projects (both E@H) running simultaneously?
6 Dec 2005 8:35:06 UTC
Topic 190306
(moderation:
Under the "work tab", I see that there are two Einstein@Home projects. The status on both shows "Running", and the Progress percentages are indeed increasing over time.
I'm concerned that my CPU will be overwhelmed by two competing projects, and thus make my computer sluggish when I'm using the computer for interactive tasks.
Is my concern valid, and if so, how do I run only one project at a time?
why are two projects (both E@H) running simultaneously?
)
Mark,
I see your computer listed as P4, 2 CPUs. That is why there are 2 workunits running simultaneously. If you would rather it use only 1 processor, you can edit your preferences to limit it. Go to your account page. Click on "View or edit general preferences". Go to that bottom of that page and click on "Edit preferences", the go back up to the Processor usage section, where you will se the last item is "On multiprocessors, use at most...", Change the default value of "2" to "1", and go down to the bottom of the page again and click "update preferences". If you wish the preference changes to take place immediately, open the Manager window, on the "Work" tab, take note of which project is running, and on the "Projects" tab, click on that project, and click "update" button on the left side of the window.
Regards,
Michael
(edit) I noticed that your first workunit did not complete, that it was "errored out" with a 0cx0000005 errorcode. That code is indicative of a graphics bug, usually due to hitting the "Show graphics" button or running the Einstein screensaver. If you are interested, there are 2 fixes: doing without the graphics and screensaver, or installing the 0.18 Einstein app, available here. If you opt for the 0.18 app (well-tested for nearly 3 months now and decidely stable), be sure to carefully read the installation instructions.
microcraft
"The arc of history is long, but it bends toward justice" - MLK
Michael - Thanks for your
)
Michael - Thanks for your quick reply.
I'm not sure why BOINC thinks my computer has 2 CPUs. My computer is a simple Dell 4600C home computer with a Pentium4 2.8Ghz processor. So I will follow your instructions to run with a single process.
Regarding your observation of my first work unit, the reason for the err out might be my manual abort of that work unit as a (feeble) attempt to shut down one of the processes.
Your computer probably has
)
Your computer probably has Hyperthreading, which allows dual processinging on a single processor.
I run 2 simutaneous projects on my HT processors without any issues. If I need the machine for other use, I use it, and have no slowdowns.
Someone else can explain Hyperthreading a little better than I.
RE: Someone else can
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I try it:
CPU's are getting faster.
Memory is getting faster.
This process is for CPU's much faster then for memory.
So, the CPU's are much faster than the Memory.
CPU's are the most time waiting very fast for the Memory.
The idea of Hypertrhreading (and other multithreading techniques) is to
schedule more than one independent peaces of work into the CPU.
If one needs something from the Memory, the CPU can work on another one.
Regards
Hans-Peter
solaris is like a wigwam: no windows, no gates and a apache inside !
