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Louwrentius 2009-01-11 20:44:36 +00:00
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#summary Introduction about PPSS, its usage and its features. #summary Introduction about PPSS and its features.
#labels Phase-Requirements #labels Phase-Requirements
= Introduction = = Introduction =
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* Actions performed by PPSS are logged to a logfile for your inspection. * Actions performed by PPSS are logged to a logfile for your inspection.
* Can take a text file with one item per line. Items can be what you want. URLs, files, anything. * Can take a text file with one item per line. Items can be what you want. URLs, files, anything.
* Can execute any command you like. Can execute your own scripts in parallel. * Can execute any command you like. Can execute your own scripts in parallel.
* If interrupted, will by default continue where it was left, skipping processed files.
= Usage =
A quick look on the help instructions of PPSS show that just three command-line options are required to execute your command in parallel on a collection of items.
{{{
Parallel Processing Shell Script
Version: 1.0
Description: this script processess files or other items in parallel. It is designed to make
use of the multi-core CPUs. It will detect the number of available CPUs and start a thread
for each CPU core. It will also use hyperthreading if available.
Usage: ppss.sh [ options ]
Options are:
- c [ command ] Command to execute. Can be a custom script or just a plain command.
- d [ directory] Directory containing items to be processed.
- f [ input file ] File containing items to be processed. Either -d or -f
- l [ logfile ] Specifies name and location of the logfile.
- p [ no of parallel processes ] Optional: specifies number of simultaneous processes manually.
- j ( enable hyperthreading ) Optiona: Enable or disable hyperthreading. Enabled by default.
Example: encoding some wav files to mp3 using lame with support for hyper-threading:
ppss.sh -c 'lame ' -d /path/to/wavfiles -l logfile -j
}}}