Optimising code performance is known to be the black art and don’t worry about optimisation until you really need it. Hence don’t forget that, “premature optimisation is the root of evil”. Here are some useful points that you should consider while writing your code: You can really increase the speed of hashing by using fast [...]
Archive for the ‘Programming’ Category
Scalability Tips for Building Fast Applications
Perl Poetry
Yeah again I didn’t bother writing a blog-post myself and thereof I’m putting here an interesting fragment from Larry Wall’s big Camel (see: judgin’ a book by its cover) book. The forgery in the attendant sidebar appeared on Usenet on April Fool’s Day, 1990. It is presented here without comment, merely to show how disgusting [...]
A Few Interesting Articles from LWN
07 Dec 2010 at 10:07
caglar
Engineering, Linux, Programming, Software Engineering, Softwares, system administration, Systems
Neil Brown has written very nice and helpful series of articles about the design patterns used in linux kernel: Linux Kernel Design Patterns Part 1 Linux Kernel Design Patterns Part 2 Linux Kernel Design Patterns Part 3 But recently he has written a great analysis and criticism on the design of UNIX: Ghosts of Unix [...]
Look Ma, I’m Root!
Recently a serious exploit is announced in the fulldisclosure maillist. This exploit uses a vulnerability in glibc and it is suprisingly easy to gain root rights with it: # Create a directory in /tmp we can control. $ mkdir /tmp/exploit # Link to an suid binary, thus changing the definition of $ORIGIN. $ ln /bin/ping [...]
Standard C library Functions That You Should Avoid Using Because of Security
OpenSolaris Project has a very good reference about the security considerations for the standard C library functions. But here I compiled a list of the most used ones. Also refer to the ACM’s C library Reference page about the functionalities of these functions. gets: This function can cause buffer overflows, because it is impossible to [...]
Solving CUDA Compiler Version Problem in Linux
19 Sep 2010 at 15:18
caglar
Computer Science, Programming, Software Engineering, system administration
CUDA’s default SDK(version 3) and compiler uses an older version of gcc (gcc-4.3); and if the gcc installed on your computer doesn’t match with CUDA’s version, it will fail installing. But there are ways to bypass this problem without removing your current compiler. To compile a CUDA code with a specific version of a compiler: [...]
A Very Nice Reference for Software Design Patterns
A few days ago I found Sourcemaking’s design patterns reference page. It is a really good reference for fundemental Object Oriented Design Patterns and I recommend it anyone who wants to dive into Design Patterns. Although I usually find Head First series very basic and childish but their design patterns book Head First Design Patterns [...]
Measure the temperature of the system in Linux
In linux you can use lm-sensors to measure the temperature and the pc health of the system. Via the following snippet you can monitor the system by refreshing the statistics every 2 seconds: #!/bin/bash while [ 1 ]; do sensors; sleep 2; clear; done; Related Posts:No Related Posts
My vimrc file for Perl, Python, PHP and C code
Here is my .vimrc file that is highly modified for programming in perl, python, php or C: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 [...]
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