xenial (1) pegasus-keg.1.gz

Provided by: pegasus-wms_4.4.0+dfsg-5_amd64 bug

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/