User`s guide

MADYMO Coupling Manual Release 7.5

Option Corresponds to

FEBIN -febin

NPMAD -npmad

NPFE -npfe

COUPLING -coupling

MPILIB -mpilib

HOSTFILE -hostﬁle

MADARGS -madargs

FEARGS -feargs

MADINPUT MADYMO input ﬁle

FEINPUT PARTNER input ﬁle

host1:np1

host2:np2

[FEPARTNER]

host3:np3

host4:np4

The ’hostX’ strings should be replaced the host names of the available machines, and the ’npX’

strings should be replaced with the number of CPUs the solver can use on that host. The

number of hosts per section is arbitrary, and the ’npX’ values depend on the host capabilities.

Note:

1. The total number of spawned processes (being <npmad> + <npfe>) should not exceed

the sum of all ’npX’ values. If more processes are spawned on a machine/node than

there are available CPUs, either HP-MPI will not run at all, or there will be a severe

performance penalty!

2. If no ’hostﬁle’ option is passed to madymo_cpl, the MADYMO and PARTNER solvers

will be started on the machine/node where madymo_cpl was started (local run). Again,

please take into consideration how many CPUs are available on the machine! Of course a

hostﬁle can be written with just one host per solver, to ’ofﬂoad’ the simulation to another

(single) host.

8.2.5 Conﬁguration Files

A conﬁguration ﬁle is a simple text ﬁle, with one option per line. An option is formatted as

"OPTION=VALUE". Valid options are shown in the table below.

There is no need to put all options in a conﬁguration ﬁle, i.e., a few options can be set in the

conﬁguration ﬁle and the rest of the options can be set on the command line. If an option is

deﬁned in both the conﬁguration ﬁle as well as on the command line, the command line value

overrules the value in the conﬁguration ﬁle.