Runtime Support for Parallel Languages
Saltz  ftp site:  hyena.cs.umd.edu.


pC++
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Data paralellelism + object Parallelism - apply class functions in parallel
to a set of objects in a "concurrent aggreagate:

similar to HPF: supports data distributions

Processor objects
	set of threads
	shared obj space - read-only by subprocesses

Collections:
	Element Class
		DistArray
		DistGrid
		DistTree
	Mapped to Thread Environments as arrays are mapped to processors
	in HPF: first aligned via templates, then distributed across processors.

Indexing: - can index components and threads using operators . and ()

Functions:

c.g():  apply g() to each el of C()
<etc>

Implementation

~500 lines of machine dep code

soon port to TeD


Limitations:(imilar to hpf)


spmd code
one parallel collection operation at a time

Dist Run Time System issues

Servicing requests requires polling (current) or interrupts
Need high-perf barrier sync.