Connexion with "Leiden Classical"


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Profile suguruhirahara
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Message 1724 - Posted 6 Dec 2006 8:07:44 UTC
Last modified: 6 Dec 2006 8:12:49 UTC

As some of you have already known, Dr Michela Taufer paid a visit to Leiden University, where one of the BOINC projects " Leiden Classical " is hosted, according to the news on the top page of the project. It must be great if this connexion makes a super synergy!

Could I know which part of these sciences would be mainly developed / improved from this relationship?

thanks,
suguruhirahara
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Profile Andre Kerstens
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Message 1728 - Posted 7 Dec 2006 0:03:21 UTC - in response to Message ID 1724 .
Last modified: 7 Dec 2006 3:09:21 UTC

Probably server-side scheduling. With some of their apps, they have exactly the same problems that we have: differences in results between architectures. So what they have done is dynamically partitioning up the shared memory and build a smart feeder and cgi program to handle this. The advantage is of course that you can start optimizing the app for all the architectures you support. The downside is that you will have less machines per HR class, which will make the average validation time for a workunit longer (of course this problem will be negligable if D@H has 100'000 machines equally distributed over the HR classes :-)

I heard from Michela that the visit was a big success and that the Leiden group have made great strides to setup a visit to their lab in such a short time (thanks Mark!). I'm sure she'll come home with many good ideas and some source code :-) And you're right: hopefully a fruitful collaboration will grow out if this.

Cheers
Andre

As some of you have already known, Dr Michela Taufer paid a visit to Leiden University, where one of the BOINC projects " Leiden Classical " is hosted, according to the news on the top page of the project. It must be great if this connexion makes a super synergy!

Could I know which part of these sciences would be mainly developed / improved from this relationship?

thanks,
suguruhirahara


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Message 1731 - Posted 7 Dec 2006 4:59:03 UTC - in response to Message ID 1728 .

Hi andre,

Probably server-side scheduling. With some of their apps, they have exactly the same problems that we have: differences in results between architectures.

(Also I see that project have a problem in treating results of a workunit, which hadn't appeared until several months before.)

I heard from Michela that the visit was a big success and that the Leiden group have made great strides to setup a visit to their lab in such a short time (thanks Mark!). I'm sure she'll come home with many good ideas and some source code :-) And you're right: hopefully a fruitful collaboration will grow out if this.

Because leiden classical is relatively new as much as docking@home, there might be something that can be studied from their experience such as source code, as you mentioned.
Anyway I'll crunch leiden classical too:)

thank for reading,
suguruhirahara

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Message 1745 - Posted 9 Dec 2006 16:00:29 UTC

FYI: Article around the Homogenerous Redundancy: http://doi.ieeecomputersociety.org/10.1109/IPDPS.2005.247

I found a link to the page on papers related to BOINC . The article was written by Dr Michela Taufer, Dr David Anderson et al and explains what homonegerous Redundancy is like. Since I've started reading just now I don't know on which points the article argues (yet it seems to be written for experts), but if you're interested in the science and you have some money to buy it, let's take it.

I got it through a service which the university I belong provides:)

thanks for reading,
suguruhirahara
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Profile David Ball
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Message 1747 - Posted 10 Dec 2006 11:17:21 UTC

For those, like me, who can't access that particular paper, you can find an interesting pdf of a paper on The Effectiveness of Threshold-based Scheduling Policies , which explains a lot. The paper is by some familiar names: Trilce Estrada, David A. Flores, Michela Taufer, Patricia J. Teller, Andre Kerstens, and David P. Anderson. It seems to be the paper that Michela Taufer presented in Amsterdam at the eScience 2006 conference this month. It was mentioned in the news section on the front page, but the link was to the conference website.

By searching google for

Threshold-based Scheduling Policies site:www.cs.utep.edu

google will offer to translate the paper into HTML for those who have problems with pdf.

It's a very interesting read and probably explains the type of stuff that was discussed with the "Leiden Classical" group.

-- David

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Message 1752 - Posted 10 Dec 2006 19:52:55 UTC
Last modified: 10 Dec 2006 19:53:11 UTC

For the interested among you, there are several papers/talks from Michela, me and others here .

Thanks
Andre
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Message boards : Docking@Home Science : Connexion with "Leiden Classical"

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