The Search for Black Holes

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Profile Remember911
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Message 77496 - Posted: 8 Feb 2005, 10:19:47 UTC

The original Boinc Project through SSL involved the search for Black Holes in space. This project was put on hold due to equipment shortages, problems with the Seti Project and so forth. Does anyone know if this will become a main line project in the future, once again.

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Message 77507 - Posted: 8 Feb 2005, 12:05:41 UTC - in response to Message 77496.  

> The original Boinc Project through SSL involved the search for Black Holes in
> space. This project was put on hold due to equipment shortages, problems with
> the Seti Project and so forth. Does anyone know if this will become a main
> line project in the future, once again.

It will, under the name Astropulse.
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Message 77569 - Posted: 8 Feb 2005, 17:46:06 UTC

Excellent. I'll look forward to the Astropulse Project.

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Message 77601 - Posted: 8 Feb 2005, 18:45:41 UTC
Last modified: 8 Feb 2005, 18:46:17 UTC

You know, as more project come out people will have to start really choosing which ones they want to run. Now it's easy to run all of them with 3 real active projects (Pirates barely has work and LHC is down; Einstein is still quasi-closed). With many more I won't have enough RAM to keep them all stored in memory so I'll have to choose some favorites :(
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Message 77612 - Posted: 8 Feb 2005, 19:05:57 UTC - in response to Message 77601.  

> You know, as more project come out people will have to start really choosing
> which ones they want to run. Now it's easy to run all of them with 3 real
> active projects (Pirates barely has work and LHC is down; Einstein is still
> quasi-closed). With many more I won't have enough RAM to keep them all stored
> in memory so I'll have to choose some favorites :(

I don’t think RAM will be the factor witch makes you have to choose between what projects you want to run. If you set your “switch project every X min” to a value grater then it takes for the WU’s to complete (well not CPDN), then you wont be limited by having all projects stored in memory.
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Message 77615 - Posted: 8 Feb 2005, 19:12:55 UTC

From my understanding it would be inefficient to run a program and not have it stored in memory. If it's not stored in memory you lose any progress you might have made on a work unit since the last checkpoint.

Maybe I'm wrong though, if someone wants to correct me.
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Message 77619 - Posted: 8 Feb 2005, 19:24:32 UTC - in response to Message 77615.  

> From my understanding it would be inefficient to run a program and not have it
> stored in memory. If it's not stored in memory you lose any progress you
> might have made on a work unit since the last checkpoint.
>
> Maybe I'm wrong though, if someone wants to correct me.

Yes you are correct.
But if you set your “switch project every X min” to a value grater then it takes for the WU’s to complete, then the WU will finish before BOINC is supposed to switch to another project. When the WU is completed, BOINC switches to the project with greatest debt.

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Ulrich Metzner
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Message 77628 - Posted: 8 Feb 2005, 19:57:51 UTC - in response to Message 77615.  
Last modified: 8 Feb 2005, 19:58:21 UTC

> From my understanding it would be inefficient to run a program and not have it
> stored in memory. If it's not stored in memory you lose any progress you
> might have made on a work unit since the last checkpoint.
>
> Maybe I'm wrong though, if someone wants to correct me.
>

When the WU's are stopped they are not stored in 'real' memory, they are stored in 'virtual' memory, which means they go into the paging file if the system runs low on real memory. If theres a memory size problem for your system simply increase the paging file size.

Aloha, Uli

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Message boards : Number crunching : The Search for Black Holes


 
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