NAME

impi-server - IMPI server

SYNOPSIS

impi-server -server number-of-clients [-port port] [-fork] [-h]

DESCRIPTION

This starts the IMPI server, which is a contact point and an information exchange of MPI processes separately started across multiple clusters. It prints the IP address and the port number at startup, which will be given to the mpirun command as an argument to the -client option. This is specified in the IMPI specification, and users are refered to it.

OPTIONS

The following options are supported:

-server number-of-clients

Specifies the number of expected clusters to use. It is an integer between 1 and 32.

-port port-number

Specifies a network port number on which impi-server services. An arbitrary port is selected if not specified.

-fork

Specifies impi-server to fork and let it into background.

-h

Prints simple help.

ENVIRONMENT VARIABLES

CKPT_RESTART=0 or 1

Specifies restarting from a checkpoint save when set to 1.

IMPI_SERVER_PORT_RANGE=n0:n1

Specifies port range to listen. Port number from n0 to n1 (inclusive) is tried.