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Currently a few instruction types which stress (unlike most languages) movement of data through memory hierarchies
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Can be applied as aggregates (data parallel) or to each member of a set
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send DATAFAMILY from MEM-LEVEL-L to MEM-LEVEL-K
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These reference object names for data and memory nodesets (aggregates) or nodeset members (explicit parallel applications)
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Current implementation only supports "primitive"(one level) movement -- can naturally extend to multi-level movement
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move DATAFAMILY from MEM-LEVEL-L to MEM-LEVEL-K
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Use distribution DISTRIBUTION from MEM-LEVEL-L to MEM-LEVEL-K
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compute DATAFAMILY-A, DATAFAMILY-B,... on MEM-LEVEL-L
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synchronize (synchronizes all processors --- loosely synchronous barrier)
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