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What Is ScaLAPACK?

Goal:

To develop a library of high-quality, portable software for performing linear algebra computations on NUMA supercomputers, specifically MIMD distributed memory concurrent computers.

LAPACK has already done this for workstations and shared memory computers.

ScaLAPACK extends the functionality of LAPACK to distributed memory machines. ScaLAPACK=Scalable LAPACK

i.e., we want the performance/node to stay constant as the problem size scales with the number of nodes.