Beer

Very good ones. My taste.

This reminds me why I like Gentoo...

epatch_user FTW! ;)

see this discussion

linux drop cache

Thing that is rarely used but very useful when needed. How do drop cache's in Linux:

free pagecache

echo 1 > /proc/sys/vm/drop_caches

free dentries and inodes

echo 2 > /proc/sys/vm/drop_caches

pagecache, dentries and inodes

echo 3 > /proc/sys/vm/drop_caches

Test post

Mobile blogging test.

How to unpack rpm

I rarely use this one but it's handy sometimes:

rpm2cpio rpmname.rpm | cpio -idv

(taken from this blog)

edit:

sometimes it doesn't work because of this:

cpio: Malformed number

but it seems that cpio is broken and it can be fixed with:

rpm2cpio rpmnamerpm | lzma -d | cpio -id

(taken from another blog)

GPU-GEMS

GPU GEMS has arrived! It contains chapter of mine (as a co-author) about fact Smith-Waterman algorithm implementation on NVIDIA GPUs. I host code of it on http://code.google.com/p/sw-gpu/.

How I Learned To Stop Worrying And Love The Setuptools

This is mainly note for myself if I ever forgot how to use it.

For most of the time my projects lived each in it's own directory and I resolved importing issues with sys.path manipulation. That works for low number of simple programs/libraries. Using distribute (setuptools) seems to be a natural step forward.

I'd like to stay with this approach (no setuptools) for a little bit longer because I'm easily distracted and I need to get used to setuptools boilerplate ;)

Steps to make life less painful (use setuptools) and to preserve old ways:

Step 1. install virtualenv
Step 2. virtualenv $SOME_PATH_TO_NEW_ENVIRONMENT
Step 3. source $SOME_PATH_TO_NEW_ENVIRONMENT/bin/activate

Then we've got cloned python installation that will work with python setup.py install or whatever. But we're only halfway done and need to setup our package.

Step 1. mkdir $PACKAGE_INSTALLER
Step 2. cd $PACKAGE_INSTALLER
Step 3. ln -s $REAL_PACKAGE_DIR .
Step 4. write setup.py as advertised in documentation

Thats all. I can hide package installers so I don't get distracted but still I get all power of setuptools.

edit:
Main benefit is that when using setup.py develop I can edit my package as always in $REAL_PACKAGE_DIR.