NAME

ten-sec-n - Determine HPL matrix dimension for ten-second execution time

SYNOPSIS

  ten-sec-n [option] ...

Sends to standard output a value for N (matrix side length) that results in an execution time of approximately ten seconds on a single compute core.

--batchcommand=batchcommand (default: sh): Name of command used to launch a batch job on one or more cluster nodes.
--benchcommand=benchcommand (default: dhpl): Name of command used to run HPL benchmark on one or more cluster nodes.
--benchflags=benchflags (default: empty): Flags to used when invoking benchcommand. The name of a parameter file is always appended to the command line following the flags (if any).
--help: Print a brief help message and exit.
--hostprefix=hostprefix (default: empty): Common prefix of the hostnames of the nodes to be used to run the benchmark. Useful for heterogenous clusters having node types that can be distinguished by their hostnames.
--man: Print the manual page and exit.
--mpirun=mpirun (default: mpirun): Name of command used to run programs requiring MPI (Message Passing Interface) services.
--mpirunflags=mpirunflags (default: empty): Flags to be used when invoking mpirun.
--verbose: Display more information about the parameters determined and the resulting run-time..

The program makes use of the following environment values, if present:

ACBEA_HOSTPREFIX: Hostname prefix of cluster node to be used to run the benchmark
ACBEA_PROJECT: Name of the benchmarking project
ACBEA_WALLTIME: Expected runtime of the test in minutes
ACBEA_WORKDIR: Directory in which to run benchmark

 ten-sec-n

 ten-sec-n --mpirunflags='-mca btl ^openib'

The result is the same as in the first case; the test does not actually use MPI inter-process communication.

 ten-sec-n --batchcommand=run-oar.sh --benchcommand=$(type -p dhpl)

(The type -p is needed to resolve the path to dhpl; OAR requires a full pathname.)