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This effort is still a "work in progress". Please feel free to add comments. BRBut please make them stand out by bolding or underlining them. – Edward J. Yoon

Sparse Matrix

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ScaLAPACK handles only dense and banded matrices for using optimization strategies for High-Performance, But, Hama will be handles both dense/banded for performance and sparse matrices for reduce storage cost.

Why sparse matrices?

Sparse Matrix

NOTE that Sparse matrix operations cannot be optimized

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Why sparse matrices?

• Many classes of problems result in matrices with a large number of zeros
• A sparse matrix is a special class of matrix that allows only the non-zero terms to be stored
• Reduction in the storage requirements for sparse matrices
• Significant speed improvement as many calculations involving zero elements are neglected
  

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