Posts by Alexander W. Janssen

21) Message boards : Cafe Rosetta : Retaining Users - Bringing back former ones (Message 21811) Posted 4 Aug 2006 by Alexander W. Janssen Post: For the hosts: Predictor: 21.87% Rosetta: 36.00% BBC Climate: 40.24% (this is strange) Einstein: 31.43% Well i think this doesn't tell much; you just need to upgrade your OS to have an "orphaned" host; you can't merge hosts which don't have the same OS, so those hosts keep popping up in the statistics until they expire. I know that they expire (checked with my own hosts) but not when. Cheers, Alex.
22) Message boards : Number crunching : Who are you talking to???? (Message 21808) Posted 4 Aug 2006 by Alexander W. Janssen Post: nevermind, the user2 will work Thanks You're welcome. not that you care, but here's my acad drawing of how the fence/columns/gate was supposed to look. Anyway, this will give you a better idea of why I got up so early. LOL Oh, the drawing looks nice. Although it also looks like a hell of a lot of work... Good luck with that! Alex.
23) Message boards : Number crunching : Who are you talking to???? (Message 21806) Posted 4 Aug 2006 by Alexander W. Janssen Post: both the user2 and user3.gz links point to the user2.gz file. I haven't opened them yet. Sorry, was a typo... user2.csv.gz (37522 lines) user3.csv.gz (25015 lines) Sorry for the confusion, Alex.
24) Message boards : Number crunching : Who are you talking to???? (Message 21804) Posted 4 Aug 2006 by Alexander W. Janssen Post: It's 4:32 a.m here, I will go make the coffee. I get up early so I can work outdoors before it hits 100F. We had quite a long heat-wave in Germany. It was a constant 30-35 centigrees for weeks without rain; not even a thunderstorm any now and then. This all relaxed a couple of days ago. Now we got splendid fine german rainy summer-weather :) Which i really enjoy much, 'cause i got my office in the attic. Rooftiles keep heating up during the day, casting their ray-of-death into the house all day and night. I'm building brick columns/pillars (8) along the gate and front of the property (part of wifes' "honey-do" list. Uh-oh... I promised my wife to build her a new kitchen during my holidays. I know exactly what you're talking about... ;-) Would be nice if you could tell me if that CSV-stuff is what you want; although it would be probably easier for you to install Perl so that you can brew-your-own file the next time. I'd be happy to give you a hand, so if you got questions, drop me line. Cheers, Alex (slurping coffee. Hmmm, good coffee...)
25) Message boards : Number crunching : Who are you talking to???? (Message 21800) Posted 4 Aug 2006 by Alexander W. Janssen Post: well, thats' mighty nice. Just for clarity, what I'm hoping to get would look something like this: ....... I found Excel to cumbersome, so i went for CSV-files; you can easily load them in Excel. There is a Spreadsheet::Excel module for perl, but i ain't no perl-programmer usually so I've chosen the lazy way... :) The script i used to generate the CSV-files: gobbledown.pl Needs the XML::Parser module. The CSV-file with two users on each line: user2.csv.gz (37522 lines) The CSV-file with three users on each line: user3.csv.gz (25015 lines) have a good sleep. Oh i had a very good sleep until one of my %$!"-colleagues who knows that i'm on holiday and who also knows that I enjoy a long sleep called me up early in the morning: Oh, hi, it's me, $arse, i know you're on holiday, just have a short^Wdumb question... He deserves something more painful than death... :) Have fun with that stuff; i'd advice you to get perl for Windows if you don't have some unixish machine handy; you can download perl on Active State's Homepage. tony Cheers, Alex - who's going to make coffee now.
26) Message boards : Number crunching : Who are you talking to???? (Message 21777) Posted 3 Aug 2006 by Alexander W. Janssen Post: if you are pondering doing this it might be nice to also have: /user/cpid /user/expavg_credit/#agg and /user/total_credit/#agg the rest of the user.gz is not needed. tony Tony, piece of cake, can do that; i was just about to wander off and go to bed, let's discuss the details tomorrow. Cheers from .de, Alex.
27) Message boards : Number crunching : Who are you talking to???? (Message 21772) Posted 3 Aug 2006 by Alexander W. Janssen Post: Thanks Alexander, One problem, I'm decent at boinc, less knowledgeable at Rosetta, and completely ignorant of Linux, Apache, and Mysql. I hope this info will help someone else though. thanks for taking the time to present it. He Toni, ah, never mind ;) You're welcome. When i wrote that I was just bored i really meant it (I'm on holiday since monday and mywife is still working so i got lot's of spare-time) - and i thought it would be about time learn about the dodgy XML-stuff. If you like i could give you access to my database where you can connect to. You can use normal SQL-commands to extract data from it to get data for your survey. I don't mind, the data is already there and setting up an account is a piece of cake. But... #define "decent at BOINC". You're into the the BOINC runtime-lib? I started reading a bit about the API (say: brew-your-own-science-app) and could use a hint or two... tony Alex.
28) Message boards : Number crunching : Who are you talking to???? (Message 21764) Posted 3 Aug 2006 by Alexander W. Janssen Post: I was bored and i wrote a perl-script which pumps the file into a mysql-database. Can easily be adapted to other database as well, since it's using DBI. 1) Grab that script: https://opz.ynfonatic.de/pastebin.php?dl=83 Save as gobbleup.pl or however you want to call it. Give it execution rights: chmod 755 gobbleup.pl 2) Login to Mysql as root 3) create database boinc; use boinc; 4) create table users ( id INTEGER, name VARCHAR(80), country VARCHAR(80), create_time INTEGER, total_credit REAL, expavg_credit REAL, expavg_time REAL, cpid VARCHAR(80), teamid INTEGER, url VARCHAR(80)); 5) Create a boinc-user who's allowed to push crap into the database: GRANT insert, select, update, delete ON boinc.users TO 'boinc'@'localhost' IDENTIFIED BY 'YourFavouritePassword'; 6) Adapt the variables $db, $user and $password in gobbleizer.pl 7) Grab the latest user.gz, save into the same folder where gobbleup.pl is, unpack 8) Run: "./gobbleup.pl user" 9) Wait. It took me a minute on my machine: $ time ./gobbleup.pl user real 1m20.784s user 1m3.577s sys 0m1.907s (That was on http://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=268780) 10) Check if data's there: $ echo "select count(id) from users;" \| mysql -u boinc -p boinc Enter password: count(id) 74949 Voila! Have fun, Alex.
29) Message boards : Number crunching : FLOPS/$ (Message 21741) Posted 3 Aug 2006 by Alexander W. Janssen Post: And my point is that if you want to do x MFLOP's, you need, give or take some small percentage, y Watt, and that's not going to change dramatically with a differnet architecture. Well, let's consider the Cell-accelerator board which Mercury will sell next spring[2]. The webpage says it delivers up to 179 single-precision GFLOPS peak. According to [1] the double-precision FLOPS are 14 times slower, so let's assume that boards does a 12.8 double-precision GLFOPS. An Opteron 244 has about 3.14 double-precission GFLOPS[3], so a quad-Opteron system could beat that accelerator board. The Opteron 244 gobbles 84 Watts, x4 => 336 Watt The Cell-boards sucks around 210 Watt. Assuming that all Specs are correct and that the Cell scales as good as the quad-Opteron system, the Accel-boards needs 37.5% less energy; what is not calculated is the energy the host-systems needs, which donates the needed PCIe-slot. But speaking of FLOPS/Watt: Cell wins. The whole thing might become interesting if the price drops (they annouced that board with a price-tag of 8kUSD) and if you could insert a bunch of em into a PCIe-backplane. Don't want to be a smartass either, but i'd call a power-difference of ~35% quite something. Mats Alex. [1] http://www.hpcwire.com/hpc/671376.html [2] http://www.mc.com/products/view/index.cfm?id=106&type=boards [3] http://www.opteronics.com/pdf/39497A_HPC_WhitePaper_2xCli.pdf
30) Message boards : Number crunching : Report Problems with Rosetta Version 5.25 (Message 21722) Posted 3 Aug 2006 by Alexander W. Janssen Post: Got another error 131 (0x83): Wed 02 Aug 2006 10:09:39 PM CEST\|rosetta@home\|Unrecoverable error for result FRA_t384_CASP7_hom001_4_t384_4_1ofgA_IGNORE_THE_REST_321_1060_1_0 (process exited with code 131 (0x83)) BOINC 5.4.9 Linux 2.6.8-3-686-smp #1 SMP Sat Jul 15 08:52:57 UTC 2006 i686 GNU/Linux HTH, Alex.
31) Message boards : Number crunching : FLOPS/$ (Message 21720) Posted 3 Aug 2006 by Alexander W. Janssen Post: Pentium D 940 @ 3,2GHz sucks 199.7 Watt under load; just the Athlon 64 FX 62 flying at 2.8 GHz sucks more juice: 249.6 Watt. Where did you get the power figure of the Athlon FX 62? I've got one, and I can assure you that I've also got a stock heatsink that is NOT designed for a 250W processor... Dear Matt, i got all those figures from the table in that magazine. But you're right i think; i did a quick search on the 'net and i found out that the FX-62 just consumes about 125 Watt - at least all the sources i found on a quick peak were around that number. Well, might be an error in the table then i guess. CT-magazine is a renowned and professional magazine, but everybody can make a mistake. Sorry for spreading confusion! Mats Alex.
32) Message boards : Number crunching : FLOPS/$ (Message 21708) Posted 3 Aug 2006 by Alexander W. Janssen Post: for initial outlay the dual core pentium D's overclocked to near 4GHz would probably be good for the money, but the electricty consumtion would be massive Pentium D 940 @ 3,2GHz sucks 199.7 Watt under load; just the Athlon 64 FX 62 flying at 2.8 GHz sucks more juice: 249.6 Watt. Core Duos are the most energy-efficient CPUs at the moment: CPU clock Watt under load Core 2 Extreme X6800 2,93 Ghz 171,4 Core 2 Duo E6700 2,66 Ghz 164,4 Core 2 Duo E660 2,4 Ghz 155 Source: cT Magazine, issue 16/2006, page 116f. HTH, Alex. P.S.: Contact me via email for more details, won't post all the stuff here.
33) Message boards : Rosetta@home Science : New Japanese Super-Computer (Message 21451) Posted 30 Jul 2006 by Alexander W. Janssen Post: The special-purpose CPUs are designed by Riken and they seem to be commercially available... could anyone who speaks Japanese have a look? http://mdgrape.gsc.riken.jp/index.php Cheers, Alex.

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