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2.3   Programming concepts

Host
 A physical machine, e.g.
Virtual machine
A meta-machine composed of one or more hosts
Process
A program, data, stack, etc., e.g.
Task
A PVM process -- The smallest unit of computation
TID
The unique (per virtual machine) identifier associated with each task
PVMD
The PVM daemon, e.g. pvm3/lib/ARCH/pvmd
Message
An ordered list of data sent between tasks
Group
 An ordered list of tasks assigned a symbolic name
Each task has an unique index in the group
Any task may be in zero or more groups




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