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gfsched

NAME

gfsched - create a host file using file-affinity scheduling

SYNOPSIS

gfsched [ -U ] [ -I fragment-index ] [ -p gfarm-program-URL ] gfarm-URL [ output-hostfile ]

gfsched [ -U ] -N number [ -p gfarm-program-URL ] [ host ... ]

DESCRIPTION

gfsched creates a host file using the file-affinity scheduling of gfarm-URL. In other words, gfsched chooses and displays hostnames, matching the number with the fragments of the gfarm-URL, giving priority, as far as possible to the host which has the fragment. When output-hostfile is omitted, gfsched displays to the standard output.

If -N is specified instead of gfarm-URL, gfsched chooses and displays a specified number of hosts from the hosts in the arguments. If no hosts are specified in the argument, gfsched chooses hosts from all registered hosts.

OPTIONS

-I fragment-index

Specifies the fragment index to be scheduled.

-U

Suppresses authentication check. Without this option, the scheduler checks whether the user will be successfully authenticated with the hosts or not. This option omits the check to make scheduling faster, but that creates a risk that hosts which fail authentication with the user may be scheduled.

-p program-URL

Creates a host file with a program name which will be used to process the gfarm-URL. In other words, only hosts which can run the program-URL will be selected, if this option is specified.

-?

Displays a list of command options.