One application "captures" my computer
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Questions and Answers : Getting started : One application "captures" my computer

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Carlysle J Thomas
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Joined: 26 Apr 13
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Message 611 - Posted: 30 Apr 2013, 1:13:27 UTC

I am trying to run two applications under BOINC, but one app, MalariaControl, seems to completely take-over my BOINC account. A "Sorcerer's Apprentice sort of nightmare". I thought I had set up BOINC so that both applications shared 50-50, I"m going days without FightMalaria@home tasks being run, even though they are waiting.

Both applications show that they have work and tasks. But when I try to suspend it, MalariaControl keeps activating new tasks -- even though ostensibly "suspended". My second application, fight malaria@home, has tasks waiting and waiting. So, finally, after a couple of days of not-stop MalariaControl tasks, I deleted Malaria Control completely. I didn't want to have to do that. But the other application finally runs.

Bottom line: I can't seem to be able to share my computer between these two applications. What am I doing wrong here?

J Thomas
Colorado Springs

Thyme Lawn
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Joined: 25 Oct 12
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Message 618 - Posted: 1 May 2013, 9:33:39 UTC - in response to Message 611.

My impression is that FM@H occasionally has periods when it has no work to send to computers. These don't usually last for very long (more often the next request is allocated work), but it can result in work being requested for other projects to fill the cache.

MCDN shows that 143 tasks timed out this morning. They were all sent to your computer in a period of less than 2 hours on 25th April. I suspect FM@H didn't have any work available during that period, but the earliest tasks sent to your computer were on 26th so it's impossible to be certain of that.

Your computer has 67 in progress task on MCDN. These were all sent in a 2 hour period between 03:01:58 and 05:06:02 on 29th April. Looking through your valid tasks on FM@H it's clear that coincided with a period when no new tasks were sent to your computer (there's a gap between 12:01:12 on 28th and 05:17:41 on 29th, currently here but probably not for long).

The only reason I can think of to explain why only MCDN was running is that BOINC thought it was in deadline trouble. This would have caused it to run the project exclusively until the pending work cache was no longer likely to miss the deadline. It probably doesn't help that MCDN tasks have a highly variable runtime which can't be determined beforehand. This can result in deadline problems if the current estimated runtime is low and is suddenly inflated by one of the long runtime tasks.

BOINC keeps track of how long each project has run for and will adjust its scheduling of tasks to match your resource share over time.
"The ultimate test of a moral society is the kind of world that it leaves to its children." - Dietrich Bonhoeffer

Questions and Answers : Getting started : One application "captures" my computer

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