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http://www.emsl.pnl.gov:2080/docs/global/ga.html
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Note Matrix Formation and Algebra underlies much Chemistry
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Provides programmer with one-sided shared-memory programming model regardless of underlying platform
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Interfaces with parallel linear algebra libraries: PeIGS, ScaLAPACK, ISDA, etc.
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Exposes NUMA nature common to all platforms to programmer -- efficient portable algorithms consider or use NUMA
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Portable -- implementations available for
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Distributed memory (interrupt-driven messages)
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Shared memory (using SysV shared memory features)
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Clusters of SMP nodes, NOWs, etc. (shared-memory within cluster, data server process for inter-cluster comms via simple message passing)
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I-WAY (data replicated on distant MPPs)
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Designed for straightforward migration to HPF
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