Fine-grain: Thousands to perhaps millions of small pieces, executed by very small, simple processors (several per chip) or through pipelines.
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Processors often have instructions broadcasted to them.
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Computation/ Communication ratio often near unity.
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Typical of SIMD but seen in a few MIMD systems such as Kogge's Execube, Dally's J Machine or commercial Myrianet (Seitz)
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This is going to be very important in future petaflop architectures as the dense chips of year 2003 onwards favor this Processor in Memory Architecture
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So many "transistors" in future chips that "small processors" of the "future" will be similar to todays high end microprocessors
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As chips get denser, not realistic to put processors and memories on separate chips as granularities become too big
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