pvm_getinst — returns the instance number in a group of a PVM process.
[inum] = pvm_getinst(group, tid)
string, string group name of an existing group.
integer, task identifier of a PVM process.
integer, instance number returned by the routine.
pvm_getinst takes a group name group and
a PVM task identifier tid
and returns the unique instance number that corresponds to the input.
It can be called by any task whether in the group or not.
The returned value inumwill be >= 0 if
the call is successful and will be
will be < 0 if some error occurs.