Platform LSF Reference Version 6.2

lstcsh
Platform LSF Reference
251
lstcsh
load sharing tcsh for LSF
SYNOPSIS
lstcsh [tcsh_options] [-L] [argument ...]
DESCRIPTION
lstcsh is an enhanced version of tcsh. lstcsh behaves exactly like tcsh, except
that it includes a load sharing capability with transparent remote job execution for LSF.
By default, a
lstcsh script is executed as a normal tcsh script with load sharing
disabled.
If a command line is considered eligible for remote execution, LSF selects a suitable
host— typically a powerful and/or lightly loaded host that can execute the command
line correctly—and sends the command line to that host.
You can restrict who can use
@ for host redirection in lstcsh with the parameter
LSF_SHELL_AT_USERS in
lsf.conf.
Remote Hosts
lstcsh provides a high degree of network transparency. Command lines executed on
remote hosts behave the same as they do on the local host. The remote execution
environment is designed to mirror the local one as closely as possible by using the same
values for environment variables, terminal setup, current working directory, file creation
mask, and so on. Each modification to the local set of environment variables is
automatically reflected on remote hosts.
Shell variables, nice values, and resource limits are not automatically propagated to
remote hosts.
Job Control
Job control in lstcsh is exactly the same as in tcsh except for remote background
jobs.
lstcsh numbers background jobs separately for each of the hosts that are used
to execute them. The output of the built-in command
job lists background jobs
together with their execution hosts.
To bring a remote background job to the foreground, the host name must be specified
together with an at sign (
@), as in the following example:
fg %2 @hostA
Similarly, the host name must be specified when killing a remote job. For example:
kill %2 @hostA