Q. Routines which handle dynamic processes?

number of routines which handle dynamic processes: 

• int pvm_joingroup( char *group )

Enrolls calling process in a named group. group is a name of an existing group. Returns instance number. Instance numbers starts from 0 to number of group members minus 1. In PVM 3 a task can join more than one group. If a process leaves a group but then rejoins it that process may get a different instance number. 

• int info = pvm_lvgroup( char *group )

Unenrolls calling process from a named group. 

• int pvm_gettid( char *group, int inum )

Returns the tid of a process recognized by instance number and group name. 

• int pvm_getinst( char *group, int tid )

Returns instance number in a group of PVM process. 

• int size = pvm_gsize( char *group )

Returns number of members presently in named group. 

 int pvm_barrier( char *group, int count )

  Blocks calling process till all processes in a group have called it. count species the number of group members which must call pvm_barrier before they are all released.