bionic (3) pvm_delhosts.3PVM.gz

NAME

       pvm_delhosts - Deletes hosts from the virtual machine.

SYNOPSIS

       C    int info = pvm_delhosts( char **hosts, int nhost, int *infos )

       Fortran   call pvmfdelhost( host, info )

PARAMETERS

       hosts   An array of pointers to character strings containing the names of the machines to be deleted.

       nhost   Integer specifying the number of hosts to be deleted.

       infos   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.

       host    Character string containing the name of the machine to be deleted.

       info    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

       PvmBadParam
              giving an invalid argument value.

       PvmSysErr
              local pvmd not responding.

SEE ALSO

       pvm_addhosts(3PVM), pvm_notify(3PVM)

                                                 30 August, 1993                                  DELHOSTS(3PVM)