brlainfo

displays host topology information

Synopsis

brlainfo [-l] [host_name ...]
brlainfo [-h | -V]

Description

brlainfo contacts the Platform LSF HPC topology adapter (RLA) on the specified host and presents topology information to the user. By default, displays information about all hosts running RLA.

Options

-l

Long format. Displays additional host topology information.

host_name ...

Only displays information about the specified host.

-h

Prints command usage to stderr and exits.

-V

Prints LSF release version to stderr and exits.

Default output

Displays the following fields:

HOSTNAME

Name of the host running RLA

CPUSET_OS

RLA host operating system

NCPUS

Total number of CPUs

FREECPUS

Number of free CPUS

NNODES

Number of nodes allocated

NCPU/NODE

Number of CPUs per node

NSTATIC_CPUSETS

Number of static cpusets allocated

Long output (-l)

The -l option displays a long format listing with the following additional fields:

FREE CPU LIST

List of free CPUs in the cpuset

For example:

0-2
NFREECPUS ON EACH NODE

Number of free CPUs on each node

For example:

2/0,1/1
STATIC CPUSETS

List of static cpuset names

For example:
NO STATIC CPUSETS
CPU_RADIUS
For example:
2,3,3,3,3,3,3,3
  • 2 CPUs are available within radius 0

  • 3 CPUs are available within radius 1, 2, 3, 4, 5, 6, and 7.

CPUs grouped within a smaller radius can be thought of as being closer together and therefore have better communications performance.

Examples

brlainfo hostA hostB hostC
HOSTNAME          CPUSET_OS  NCPUS  NFREECPUS NNODES  NCPU/NODE NSTATIC_CPUSETS
hostA             SGI_IRIX   2      2         1       2         0
hostB             PROPACK_4  4      4         2       2         0
hostC             PROPACK_4  4      3         2       2         0
brlainfo -l
HOST: hostC
CPUSET_OS   NCPUS  NFREECPUS NNODES  NCPU/NODE NSTATIC_CPUSETS
PROPACK_4   4      3         2       2         0
FREE CPU LIST: 0-2
NFREECPUS ON EACH NODE: 2/0,1/1
STATIC CPUSETS: NO STATIC CPUSETS
CPU_RADIUS: 2,3,3,3,3,3,3,3