Information Technology

...and this is a good opportunity to spread some common smattering yet another time among the headlines. In all clearness: The WWW is no synonym for the internet! The WWW is that hypertext thing you view with your web browser. No, internet pages do not exist, these are web pages. Yes, Internet Explorer is just a bad name. The WWW is part of the internet, like e-mail, FTP, IRC, the usenet or P2P networks. The WWW turned fifteen, not the internet. Tim Berners-Lee invented the WWW, and not the internet. A certain science magazine spread this common ignorance on TV. Shame on them!

CUDA is a technology by NVIDIA to accelerate scientific computations by the help of GPUs. Unfortunately, Debian isn’t supported officially yet. The toolkit for Ubuntu should come closest to it. First, the toolkit has to be installed, e.g. to $HOME/share/cuda, and then the SDK, e.g. to $HOME/share/NVIDIA_CUDA_SDK. These two paths shall be referred to as $CUDA_PATH and $SDK_PATH in the following. GCC and g++ have to be downgraded to version 4.1 (from ‘etch’), as 4.2 (from ‘lenny’) doesn’t work with CUDA yet.

Like described in $SDK_PATH/ReleaseNotes.html, $CUDA_PATH/bin has to be in the $PATH and $CUDA_PATH/lib in the $LD_LIBRARY_PATH. Unfortunately, this isn’t enough for Debian to successfully compile the examples (via cd $SDK_PATH && make): The $CUDA_INSTALL_PATH in line 38 of the Makefile $SDK_PATH/common/common.mk has to be corrected to the $CUDA_PATH.

To compile the GLUT code, the development package freeglut3-dev has to be installed. With that it’s now possible to compile the examples; the binaries go into $SDK_PATH/bin/linux/release.

If your amavisd-new suddenly doesn’t want to start anymore, reporting that some required Perl modules aren’t installed allegedly, then maybe the cause is something like

Took me 2 hours. I need that CPAN stuff apart from Debian at least for Geo::IPfree to map IPs to country names for my web statistics.