Provided by: pegasus-wms_4.4.0+dfsg-8_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/