Question: (Cholesky factorization) Algorithm 8.6 describes a row-oriented version of the Cholesky factorization algorithm for factorizing a symmetric positive definite into the form A = U^T
(Cholesky factorization) Algorithm 8.6 describes a row-oriented version of the Cholesky factorization algorithm for factorizing a symmetric positive definite into the form A = U^T U. Cholesky factorization does not require pivoting. Describe a pipelined parallel formulation of this algorithm that uses 2-D partitioning of the matrix on a square mesh of processes. Draw a picture similar to Figure 8.11. Algorithm 8.6 A row-oriented cholesky factorization algorithm. procedure CHOLESKY (A) begin for k: = 0 to n - 1 do begin A[k, k]: = Squareroot A[k, k]; for j: = k + 1 to n - l do A[K, j]: = A[k, j]/A [k, k]; for i: = K + l to n - l do for j:= i to n - 1 do A[i, j]: = A[I, j] - A[k, i] x A[K, j] endfor;/* Line3 */end CHOLESKY
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