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Performance of Java matrix math libraries? [closed]

.... I've compared some of these libraries. I attempted to matrix multiply a 3000 by 3000 matrix of doubles with itself. The results are as follows. Using multithreaded ATLAS with C/C++, Octave, Python and R, the time taken was around 4 seconds. Using Jama with Java, the time taken was 50 seconds. U...
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Convert List to List

... answered Nov 30 '09 at 0:43 Mark ByersMark Byers 683k155155 gold badges14681468 silver badges13881388 bronze badges ...
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“message failed to fetch from registry” while trying to install any module

... 805 I had this issue with npm v1.1.4 (and node v0.6.12), which are the Ubuntu 12.04 repository vers...
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What do the terms “CPU bound” and “I/O bound” mean?

... 470 It's pretty intuitive: A program is CPU bound if it would go faster if the CPU were faster, i.e...
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Map a network drive to be used by a service

... answered Oct 8 '08 at 13:48 mdbmdb 48.1k1010 gold badges6262 silver badges6262 bronze badges ...
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Heroku 'Permission denied (publickey) fatal: Could not read from remote repository' woes

...| edited Jul 9 '15 at 13:20 answered Aug 10 '13 at 22:40 Kr...
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Is nested function a good approach when required by only one function? [closed]

...do_it ... >>> a = sum(1, 3) >>> a <function do_it at 0xb772b304> >>> a() 4 Is this what you were looking for? It's called a closure. share | improve this answer ...
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Error: request entity too large

... 1067 I had the same error recently, and all the solutions I've found did not work. After some digg...
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Setting ANDROID_HOME enviromental variable on Mac OS X

...r" export ANDROID_HOME="$HOME/Documents/Dev/Android/adt-bundle-mac-x86_64-20140702/sdk" export ANDROID_PLATFORM_TOOLS="$ANDROID_HOME/platform-tools" export PATH="$ANDROID_HOME:$ANDROID_PLATFORM_TOOLS:$ANDROID_HOME/build-tools:$PATH" export ANT_HOME="/usr/local/bin/ant" #export PATH="$PATH:$ANT_HOME/...
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What is the difference between concurrent programming and parallel programming?

... answered Dec 13 '09 at 22:26 Tor ValamoTor Valamo 29.5k1010 gold badges6868 silver badges7979 bronze badges ...