DELHOSTS (3)
Deletes hosts from the virtual machine.
SYNOPSIS
B
C int info = pvm_delhosts( char **hosts, int nhost, int *infos )
Fortran call pvmfdelhost( host, info )
PARAMETERS
An array of pointers to character strings
containing the names of the machines to be deleted.
Integer specifying the number of hosts to be deleted.
Integer array of length
nhost
which contains the
status code returned by the routine for the individual hosts.
Values less than zero indicate an error.
Character string containing the name of the machine to be deleted.
Integer status code returned by the routine.
Values less than nhost indicate partial failure,
values less than 1 indicate total failure.
DESCRIPTION
The routine
pvm_delhosts
deletes the computers pointed to in
hosts
from the existing configuration of computers making up the virtual
machine.
All PVM processes and the pvmd running on these computers are
killed as the computer is deleted.
If pvm_delhosts is successful,
info
will be
nhost.
Partial success is indicated by 1<= info < nhost,
and total failure by info < 1.
The array
infos
can be checked to determine which host
caused the error.
The Fortran routine
pvmfdelhost
deletes a single host from
the configuration with each call.
If a host fails, the PVM system will continue to function and will
automatically delete this host from the virtual machine.
An application can be notified of a host failure by calling
pvm_notify.
It is still the responsibility of the
application developer to make his application tolerant of host failure.
EXAMPLES
C:
static char *hosts[] = {
"sparky",
"thud.cs.utk.edu",
};
int status[2];
info = pvm_delhosts( hosts, 2, status );
Fortran:
CALL PVMFDELHOST( 'azure', INFO )
ERRORS
These error conditions can be returned by
pvm_delhosts
giving an invalid argument value.
local pvmd not responding.
SEE ALSO
pvm_addhosts(3PVM) pvm_notify(3PVM)
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