Provided by: pegasus-wms_4.4.0+dfsg-5_amd64 
NAME
pegasus-keg - kanonical executable for grids
SYNOPSIS
pegasus-keg [-a appname] [-t interval |-T interval] [-l logname]
[-P prefix] [-o fn [..]] [-i fn [..]] [-G sz]
[-C] [-e env [..]] [-p parm [..]]
DESCRIPTION
The kanonical executable is a stand-in for regular binaries in a DAG - but not for their arguments. It
allows to trace the shape of the execution of a DAG, and thus is an aid to debugging DAG related issues.
Key feature of pegasus-keg is that it can copy any number of input files, including the generator case,
to any number of output files, including the datasink case. In addition, it protocols the IPv4 and
hostname of the host it ran upon, the current timestamp, and the run time from start til the point of
logging the information, the current working directory and some information on the system environment.
pegasus-keg will also report all input files, the current output files and any requested string and
environment value.
ARGUMENTS
The -e, -i, -o and -p arguments allow lists with arbitrary number of arguments. These options may also
occur repeatedly on the command line. The file options may be provided with the special filename - to
indicate stdout in append mode for writing, or stdin for reading. The -a, -l , -P , -T and -t arguments
should only occur a single time with a single argument.
If pegasus-keg is called without any arguments, it will display its usage and exit with success.
-a appname
This option allows pegasus-keg to display a different name as its applications. This mode of
operation is useful in make-believe mode. The default is the basename of argv[0].
-e env [..]
This option names any number of environment variables, whose value should be reported as part of the
data dump. By default, no environment variables are reported.
-i infile [..]
The pegasus-keg binary can work on any number of input files. For each output file, every input file
will be opened, and its content copied to the output file. Textual input files are assumed. Each
input line is indented by two spaces. The input file content is bracketed between an start and end
section, see below. By default, pegasus-keg operates in generator mode.
-l logfile
The logfile is the name of a file to append atomically the self-info, see below. The atomic write
guarantees that the multi-line information will not interleave with other processes that
simultaneously write to the same file. The default is not to use any log file.
-o outfile [..]
The pegasus-keg can work on any number of output files. For each output file, every input file will
be opened, and its content copied to the output file. Textual input files are assumed. Each input
line is indented by two spaces. The input file content is bracketed between an start and end section,
see 2nd example. After all input files are copied, the data dump from this instance of pegasus-keg is
appended to the output file. Without output files, pegasus-keg operates in data sink mode.
-G size
If you want pegasus-keg to generate a lot of output, the generator option will do that for you. Just
specify how much, in bytes, you want. This option is off by default.
-C
This option causes pegasus-keg to list all environment variables that start with the prefix \_CONDOR
The option is useful, if .B pegasus-keg is run as (part of) a Condor job. This option is off by
default.
-p string [..]
Any number of parameters can be reported, without being specific on their content. Effectively, these
strings are copied straight from the command line. By default, no extra arguments are shown.
-P prefix
Each line from every input file is indented with a prefix string to visually emphasize the provenance
of an input files through multiple instances of pegasus-keg. By default, two spaces are used as
prefix string.
-t interval
The interval is an amount of sleep time that the pegasus-keg executable is to sleep. This can be used
to emulate light work without straining the pool resources. If used together with the -T spin option,
the sleep interval comes before the spin interval. The default is no sleep time.
-T interval
The interval is an amount of busy spin time that the pegasus-keg executable is to simulate intense
computation. The simulation is done by random julia set calculations. This option can be used to
emulate an intense work to strain pool resources. If used together with the -t sleep option, the
sleep interval comes before the spin interval. The default is no spin time.
RETURN VALUE
Execution as planned will return 0. The failure to open an input file will return 1, the failure to open
an output file, including the log file, will return with exit code 2.
EXAMPLE
The example shows the bracketing of an input file, and the copy produced on the output file. For
illustration purposes, the output file is connected to stdout :
$ date > xx
$ pegasus-keg -i xx -p a b c -o -
--- start xx ----
Thu May 5 10:55:45 PDT 2011
--- final xx ----
Timestamp Today: 20110505T105552.910-07:00 (1304618152.910;0.000)
Applicationname: pegasus-keg [3661M] @ 128.9.xxx.xxx (xxx.isi.edu)
Current Workdir: /opt/pegasus/default/bin/pegasus-keg
Systemenvironm.: x86_64-Linux 2.6.18-238.9.1.el5
Processor Info.: 4 x Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz @ 2660.068
Load Averages : 0.298 0.135 0.104
Memory Usage MB: 11970 total, 8089 free, 0 shared, 695 buffered
Swap Usage MB: 12299 total, 12299 free
Filesystem Info: / ext3 62GB total, 20GB avail
Filesystem Info: /lfs/balefire ext4 1694GB total, 1485GB avail
Filesystem Info: /boot ext2 493MB total, 447MB avail
Output Filename: -
Input Filenames: xx
Other Arguments: a b c
RESTRICTIONS
The input file must be textual files. The behaviour with binary files is unspecified.
The host address is determined from the primary interface. If there is no active interface besides
loopback, the host address will default to 0.0.0.0. If the host address is within a virtual private
network address range, only (VPN) will be displayed as hostname, and no reverse address lookup will be
attempted.
The processor info line is only available on Linux systems. The line will be missing on other operating
systems. Its information is assuming symmetrical multi processing, reflecting the CPU name and speed of
the last CPU available in /dev/cpuinfo .
There is a limit of 4 * page size to the output buffer of things that .B pegasus-keg can report in its
self-info dump. There is no such restriction on the input to output file copy.
AUTHORS
Jens-S. Vöckler <voeckler at isi dot edu>
Mike Wilde
Yong Zhao
Pegasus - http://pegasus.isi.edu/