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Project Of The Month For November '09: Leiden Classical
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LanDroid
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Joined: 11 Jun 2002
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PostPosted: Sun Nov 01, 2009 1:06 pm    Post subject: Project Of The Month For November '09: Leiden Classical Reply with quote

Leiden Classical allows scientists and students to easily develop physics experiments to crunch.

http://boinc.gorlaeus.net/

Link to Leiden wikipedia:
http://en.wikipedia.org/wiki/Leiden_Classical

Here's info on classical mechanics which is the focus of this project:
Quote:
Classical mechanics is used for describing the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. It produces very accurate results within these domains, and is one of the oldest and largest subjects in science, engineering and technology.

Besides this, many related specialties exist, dealing with gases, liquids, and solids, and so on. Classical mechanics is enhanced by special relativity for objects moving with high velocity, approaching the speed of light; general relativity is employed to handle gravitation at a deeper level; and quantum mechanics handles the wave-particle duality of atoms and molecules.

http://en.wikipedia.org/wiki/Classical_dynamics


Last edited by LanDroid on Sun Nov 01, 2009 3:22 pm; edited 1 time in total
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LanDroid
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PostPosted: Sun Nov 01, 2009 3:12 pm    Post subject: Reply with quote

Starting stats:
17th place
1,349,563. points
6,632. RAC
20,215 points yesterday

Milestones today:
ohiomike passes 25,000
Adam Alexander passes 4,000
Sir Papa Smurph passes 4,000
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ohiomike
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PostPosted: Sun Nov 01, 2009 4:18 pm    Post subject: Reply with quote

As a note: Their work scheduler is a little wimpy. I would try to keep at least a 2 day cache- if the Boinc Client makes 3 calls for work when the scheduler doesn't have any you will get a 24 hour "back-off". Unless you catch this your machine will sit there for 24 hours with no work.
#Microwave

This is a common problem with projects that run homogeneous redundancy.
(*This assigns WU's in sets to similar machines. If you have a XXX CPU running YYY as an O/S you will only get WU's assigned to this combo.
If the project only has WU's for XXX running ZZZ, you don't get any work.*)

This was killing my AMD/Linux machines, I finally gave up and cooked up a version of the Boinc Client that traps the 24 hour back-off and changes it to 1 hour.


PS- It is almost 2007 again:

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ohiomike
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PostPosted: Mon Nov 02, 2009 4:09 pm    Post subject: Reply with quote

Second note: At least on the Linux X86_64 machines, I am seeing WU's failing in groups (almost no CPU time involved):
http://boinc.gorlaeus.net/forum_thread.php?id=397&nowrap=true#2509
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ohiomike
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PostPosted: Tue Nov 03, 2009 1:25 pm    Post subject: Reply with quote

Ouch- no work on 9 of my machines. This could be the worse POTM ever for me!
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Yankton
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Joined: 27 Sep 2008
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PostPosted: Tue Nov 03, 2009 4:06 pm    Post subject: Reply with quote

Looking at my logs I see a lot of no work for my platform but work available for other platforms....My backup project is Docking atm, it's going full bore.
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Sir Papa Smurph
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PostPosted: Tue Nov 03, 2009 5:26 pm    Post subject: Reply with quote

I am getting more than a few failed wu's and it just will not give enough work to my laptop so that it will stay fed when I am on the road. I may have to reconsider the allocation of PotM. Confused


Another rather sharp irritation is that they always give the smallest credit when granting credit......
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stooper101
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PostPosted: Tue Nov 03, 2009 7:21 pm    Post subject: Reply with quote

I'm getting pretty much the same thing here. No WUs and a bunch of errors.
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LanDroid
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PostPosted: Tue Nov 03, 2009 9:20 pm    Post subject: Reply with quote

Lots of stuff is broke-did, not sure if all this should be green tho:

http://boinc.gorlaeus.net/status.php

16.5K WU's ready to send...
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Sir Papa Smurph
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PostPosted: Tue Nov 03, 2009 10:56 pm    Post subject: Reply with quote

when I went there it said 5371 wu's in progress...
I have over 200 Shocked

how many people do this project??? #Sleep
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Idan
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PostPosted: Wed Nov 04, 2009 3:36 am    Post subject: Reply with quote

Any reason to attach to this project?
Work's available? o_O
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Sir Papa Smurph
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PostPosted: Wed Nov 04, 2009 7:01 am    Post subject: Reply with quote

Idan wrote:
Any reason to attach to this project?
Work's available? o_O


You'd have to be Loonie to attach to this project #ni-1
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PostPosted: Wed Nov 04, 2009 7:32 am    Post subject: Reply with quote

Sir Papa Smurph wrote:
Idan wrote:
Any reason to attach to this project?
Work's available? o_O


You'd have to be Loonie to attach to this project #ni-1


Okay, I attached it... *meep*! #ni-1
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LanDroid
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PostPosted: Wed Nov 04, 2009 12:31 pm    Post subject: Reply with quote

Well we do seem to be off to a slow start on this one - crunched 20K yesterday. Maybe once everyone gets some WU's in da Q! Ohhh, da good Dr. Vornoff is crunching a lil bit o' Leiden...

Milestones last 2 days:
The Knights Who Say Ni! passed 1,400,000

ohiomike passed 60,000
Sir Papa Smurph passed 10,000
Adam Alexander passes 8,000
Adam Alexander passed 7,000
Yankton passed 5,000
LanDroid passed 2,000
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Nuadormrac
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PostPosted: Wed Nov 04, 2009 2:35 pm    Post subject: Reply with quote

If it's that difficult to get work; I might have to sit this one out. Let's put it this way; unemployment sucks, and I'm on the verge of getting my phone and Internet disconnected. I simply can't pay the bill now, and being unemployed, income (or the lack there of) is a major problem. I've been going through unemployment since March, and without benefits no thanks to some pencil pushers finding a loop hole of "you worked the required number of weeks, but because you weren't payed a min amount in each pay week period...." When I started, they didn't have numbers, so the employer had to bundle the pay for when I began there onto the first pay check as "additional pay". #ni-1

I'm not even sure I'll be able to connect often enough for my current runs of Milkyway and not not; which might mean projects like CPDN with very little network uptime needed is the only go. If I take the HD to my father's computer (BOINC is on a USB external drive), and do the upload there, it's like a 20 min drive there; again unemployed, gas costs money... I'm simply not looking at the prospects of being able to go through projects that will fail often and have backoff algorithms when my time online is about to hit close to 0% of the time.
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stooper101
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PostPosted: Wed Nov 04, 2009 5:33 pm    Post subject: Reply with quote

Well, today I have a whole bunch of WUs, go figure. Hope things turn around for you Nuadormrac.
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Sir Papa Smurph
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PostPosted: Wed Nov 04, 2009 5:58 pm    Post subject: Reply with quote

I have 19 cores running on this and I only put in 1500 credits in the last 24 hours.

It's no wonder we are off to a slow start.

However to be honest I do have 2000 in pending but because of the way they award credit I am sure it will end up being less that that.

This could be as bad or even worse that the disaster that was Sha-1
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LanDroid
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PostPosted: Thu Nov 05, 2009 6:12 am    Post subject: Reply with quote

Sorry to hear about your tough situation, Nuadormrac. Hope something turns up for you soon!

Eeegadz, only 11K crunched yesterday. Let's not panic (yet), if we hang in there and this project settles down, there are easy pickens - we can pass about 8 teams in the next few weeks... Leiden d-base claims about 14K WU's ready to send out and about 22K in process...
#ni-2
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LanDroid
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PostPosted: Fri Nov 06, 2009 1:09 pm    Post subject: Reply with quote

We just passed our first team, Guru Mountain.

C'mon team, let's crunch for da Wabbit! He's been pimping this project for 5 months!
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Killerrabbit
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Joined: 23 May 2002
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PostPosted: Sat Nov 07, 2009 1:12 am    Post subject: Reply with quote

This project might not be the biggest credit giver, but it is for the Dutch and a different science than math or the stars.

Ni
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