Sunday, June 24, 2007

Parallel BZIP2 (PBZIP2) : Data Compression Software

BZIP2 is a parallel implementation of the bzip2 block-sorting file compressor that uses pthreads and achieves near-linear speedup on SMP machines. The output of this version is fully compatible with bzip2 v1.0.2 or newer (ie: anything compressed with pbzip2 can be decompressed with bzip2).


PBZIP2 should work on any system that has a pthreads compatible C++ compiler (such as gcc). It has been tested on: Linux, Windows (cygwin & MinGW), Solaris, Tru64/OSF1, HP-UX, and Irix.

http://compression.ca/pbzip2

setup X window on a machine with built-in VGA and VGA card

some machines have built-in VGA output and would disable it after you insert new VGA card (AGP or PCI). In some cases, when you run sax2 under Suse, you will get blank/black screen due to wrong detection of multiple VGAs. To settup X window correctly with sax2, try these steps:
sax2 -p : list all your VGA cards
sax2 -c 0 -l : configure card 0 with low resolution mode

detailed configuration of sax2 : http://en.opensuse.org/SDB:X_Server_Configuration_with_SaX2_(8.1_or_Higher)