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Louwrentius 2009-03-09 20:53:15 +00:00
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@ -9,8 +9,9 @@ This page discusses the usage of PPSS on a single host. Examples show how PPSS i
The following output is displayed by PPSS when executed without any options:
{{{
Distributed Parallel Processing Shell Script
{{{
'Distributed Parallel Processing Shell Script
Version: 2.0
PPSS is a Bash shell script that executes commands in parallel on a set
@ -54,7 +55,7 @@ Options are:
--log | -l Sets the name of the log file. The default is ppss-log.txt.
--processes | -p Start the specified number of processes. Ignore the number of available
CPU's.
CPUs.
The following options are used for distributed execution of PPSS.
@ -95,7 +96,7 @@ Running PPSS based on a configuration file.
Running PPSS on a client as part of a cluster.
./ppss.sh node -d /somedir -c 'cp /some/destination' -s 10.0.0.50 -u ppss -t -k ppss-key.key
./ppss.sh node -d /somedir -c 'cp /some/destination' -s 10.0.0.50 -u ppss -t -k ppss-key.key'
}}}
A detailed explanation based on examples will follow.
@ -139,11 +140,19 @@ In this example, a list of URLs is provided by the file list.txt. These urls are
== Advanced command line options ==
*must be expanded*
In this paragraph, some additional options are discussed.
* -p <configure manually number of parallel processes>
* -j <enable hyper threading>
* -l <PPSS log file>
* -p <configure manually number of parallel processes>*
This option allows you to specify how many parallel proceses should be started. Thus, automatic detection of CPUs and cores is overruled. This is useful, for example, when downloading a bunch of files in parallel, or other tasks that are not bound by the number of available CPUs.
* -j <enable hyper threading>*
If a CPU is found that supports hyper threading, the additional cores are used. For example, an Intel Core 7i quad-core processor supports HT, thus has effectively 8 cores. When HT is enabled, not 4 but 8 parallel jobs are started.
* -l <PPSS log file>*
This option allows you to specify a custom name for the log file that is used by PPSS itself.
== Logging (must read) ==