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[WCG] Nutritious Rice project publishes paper; mentions GPU computations

post #1 of 15
Thread Starter 
WCG source
Paper (PDF)
Quote:
from WCG
Summary
The Nutritious Rice for the World researchers developed a way to speed postprocessing of the results computed by World Community Grid. They published a paper describing how this was done using Graphical Processing Units, normally used to in computers for games and entertainment.
Quote:
From the paper
Calculation of the root mean square deviation (RMSD) between the atomic coordinates of two
optimally superposed structures is a basic component of structural comparison techniques. We describe a
quaternion based method, GPU-Q-J, that is stable with single precision calculations and suitable for graphics
processor units (GPUs). The application was implemented on an ATI 4770 graphics card in C/C++ and Brook+ in
Linux where it was 260 to 760 times faster than existing unoptimized CPU methods.

Good read for those that are interested in furthering their understanding of how GPUs can be faster than CPUs in certain cases for BOINC projects.
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post #2 of 15
I had to stop reading the paper once they mentioned 4X4 Matrix. I had a bad flashback of a vectoral math course I took, the Prof require you to manipulate a 4X4 by hand through various transformation. shudder, sheet after sheet of paper. Interesting read never less.
post #3 of 15
Thread Starter 
Quote:
Originally Posted by tommykl;13680321 
I had to stop reading the paper once they mentioned 4X4 Matrix. I had a bad flashback of a vectoral math course I took, the Prof require you to manipulate a 4X4 by hand through various transformation. shudder, sheet after sheet of paper. Interesting read never less.

Haha, I remember doing some 4x4 Matrix multiplications before. Those things ate up so much paper.
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post #4 of 15
What? Ya'll didn't carry an HP Calculator and let it do the work and print out the results!!!!????

OMG! Are we going back to LongHand square roots on paper????? YIKES!!!!!

SHUDDER THE THOUGHT!!!!!

biggrin.gif
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post #5 of 15
Thread Starter 
Quote:
Originally Posted by Tex1954;13681443 
What? Ya'll didn't carry an HP Calculator and let it do the work and print out the results!!!!????

OMG! Are we going back to LongHand square roots on paper????? YIKES!!!!!

SHUDDER THE THOUGHT!!!!!

biggrin.gif

Casio FX-300MS is what I use for all my math (pretty useless for the math I do now tongue.gif)
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post #6 of 15
lol
    
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post #7 of 15
i hope they have a gpu app in the near future
    
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post #8 of 15
Quote:
Originally Posted by DarkRyder;13686462 
i hope they have a gpu app in the near future

I second that biggrin.gif
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post #9 of 15
Quote:
Originally Posted by Tex1954;13681443 
What? Ya'll didn't carry an HP Calculator and let it do the work and print out the results!!!!????

OMG! Are we going back to LongHand square roots on paper????? YIKES!!!!!

SHUDDER THE THOUGHT!!!!!

biggrin.gif

What model do you have? My dream is to pickup an HP 50g eventually. I see some for sale sometimes on CL (usually at end of term when they want to dump them go back to the "trusty" TI-8x/9x). I personally think the 50g is much more advanced and a nicer calculator over the TI which I feel they've been riding on their brandname since forever (as per the xkcd comic about what you could get in the mid 90's and what you could get now).
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post #10 of 15
Oh my gosh! I've not looked into them in years! Matlab (and others) with a laptop do a better job nowadays... and honestly can't remember what my model numbers were... (i'm old!)

Hmm, for a portable pocket calculator, the 50g does look good... especially the SD slot which is tons better and lightyears ahead of the old "insert tape strip" calculators I used to have! I see the reviews say there is no backlight... and being LCD, it's naturally heat and sun sensitive, but nothing major I can see wrong with it.

And, if it wasn't for the fact I couldn't get a new battery or charger, my old HP would still be working today! Especially used my old HEX calculator a TON debugging machine code!!

Thunbs Up on HP 50g!!!

biggrin.gif
Edited by Tex1954 - 5/31/11 at 5:42am
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