HP XC System 3.x Software - Manual (Page 28)

Modulefiles can be loaded into the your environment automatically when you log in to the
system, or any time you need to alter the environment. The HP XC system does not preload
modulefiles.
See Chapter 3 “Configuring Your Environment with Modulefiles” for more information.
1.3.3 Commands
The HP XC user environment includes standard Linux commands, LSF commands, SLURM
commands, HP-MPI commands, and modules commands. This section provides a brief overview
of these command sets.
Linux commands You can use standard Linux user commands and tools on the HP XC
system. Standard Linux commands are not described in this document,
but you can access Linux command descriptions in Linux
documentation and manpages. Run the Linux man command with the
Linux command name to display the corresponding manpage.
LSF commands HP XC supports LSF-HPC and the use of standard LSF commands,
some of which operate differently in the HP XC environment from
standard LSF behavior. The use of LSF-HPC commands in the HP XC
environment is described in
Chapter 10 “Using LSF-HPC” , and in the
HP XC lsf_diff manpage. Information about standard LSF
commands is available in Platform Computing Corporation LSF
documentation, and in the LSF manpages. For your convenience, the
HP XC Documentation CD contains XC LSF manuals from Platform
Computing. LSF manpages are available on the HP XC system.
SLURM commands HP XC uses the Simple Linux Utility for Resource Management
(SLURM) for system resource management and job scheduling.
Standard SLURM commands are available through the command line.
SLURM functionality is described in
Chapter 9 “Using SLURM” .
Descriptions of SLURM commands are available in the SLURM
manpages. Invoke the man command with the SLURM command name
to access them.
HP-MPI commands You can run standard HP- MPI commands from the command line.
Descriptions of HP-MPI commands are available in the HP-MPI
documentation, which is supplied with the HP XC system software.
Modules commands The HP XC system uses standard Modules commands to load and
unload modulefiles, which are used to configure and modify the user
environment. Modules commands are described in
“Overview of
Modules” .
1.4 Application Development Environment
The HP XC system provides an environment that enables developing, building, and running
applications using multiple nodes with multiple cores. These applications can range from parallel
applications using many cores to
serial application s using a single core.
1.4.1 Parallel Applications
The HP XC parallel application development environment allows parallel application processes
to be started and stopped together on a large number of application processors, along with the
I/O and process control structures to manage these kinds of applications.
Full details and examples of how to build, run, debug, and troubleshoot parallel applications
are provided in
“Developing Parallel Applications” .
28 Overview of the User Environment