Convert all PDF files in a directory to PNG images

I just needed to convert several PDF graphics to PNG raster graphics. The cleanest way to do this is via Ghostscript (example: gs -sDEVICE=png16m -sOutputFile=tiger.png tiger.pdf). For convenience I made a Python script that converts all PDF files in the working directory to PNG files via Ghostscript. I use it under Windows, but this works for “all” operating systems. Let me share it with you.
  »» Continue reading »»

Fotobatch 0.4

I just released Gurkes Fotobatch 0.4.
  »» Continue reading »»

Performance issue with newest Super Talent UltraDrive GX 128 GB [Update2]

This blog post is about a crucial performance drop in recent Super Talent UltraDrive GX 128 GB drives with an “XXXX” in the serial number. Up to now, all official tests and benchmarks show a much better performance than the drive you would order now, so read this before buying!
  »» Continue reading »»

Google Summer of Code end: code upload and acknowledgement

The Google Summer of Code 2009 final evaluation deadline is today; 19 UTC. I don’t have time to summarize my summer here now, but there are two things I want to say to the world. First, I want to thank many people for enriching my summer. Second, I would like to announce the Clobi project on Google Code.
  »» Continue reading »»

Mouse sensitivity issue in Source based games with wide screen setting

Some years ago, I liked playing Counterstrike (at last 1.6) professionally. The people who know what I’m talking about, also know that mouse/sensitivity/resolution configuration is crucial for success. These days, friends and me from time to time play Day of Defeat: Source and Team Fortress 2. In these games, I’ve lost a huge amount of skill im comparison with Counterstrike in earlier days. That’s okay, because I did not play for years and I do not know how to play DoD/TF2 as well as Counterstrike formerly. But unnecessarily one annoying thing results in an even bigger loss of skill: setting the same mouse sensitivity in CS 1.6 (“Halflife 1″) and DoD:S/TF2 (“Halflife 2″) does not result in the same distance-of-mouse-movement to distance-of-crosshair-movement-on-the-screen ratio, when using wide screen aspect ratio. Now, I’ve spent some time to analyze this issue more deeply.
  »» Continue reading »»

Who writes Linux?

I’ve just read a very very interesting document called “Linux Kernel Development — How Fast it is Going, Who is Doing It, What They are Doing, and Who is Sponsoring It: An August 2009 Update” by The Linux Foundation.
  »» Continue reading »»

Small page update

Today I slightly changed the page style, to make it better readable.
  »» Continue reading »»

new system successfully tested:

Hello you out there!

I just started running the first serious test of the system I’ve developed during this year’s Google Summer of Code. If I wanted to put it in sensational words, the test could be called “Distribution of Particle Physics High Performance Computing Jobs among Multiple Computing Clouds”; just to get some readers :-) . During the test, there will be some time I just sit around and watch my monitor, so I decided to share my experience about the new system with you and keep record of the test progress within this blog post.
  »» Continue reading »»

Wordpress vulnerability: Remote admin password reset

Today, a way was presented how to reset an admin’s password of a WordPress installation, by just calling http://domain.dom/wp-login.php?action=rp&key[]=

  »» Continue reading »»

“What’s faster–a supercomputer or EC2?” A reconsideration…

In his blog, Ian Foster recently presented What’s faster — a supercomputer or EC2?.
  »» Continue reading »»