/ Conjugate gradient / Cyclic Reduction Algorithms / distributed memory systems / domain decomposition / Domain decomposition methods / End Parallel / finite difference method / Gaussian Elimination / High Performance Computing / Matrix Vector Multiplication / multiprocessor architectures / Nonlinear Optimization Codes / numerical linear algebra / Ordinary Differential Equations / parallel computing / parallel numerical methods for scientists / QR factorization / scientific simulation methods / Sparse matrix / Sparse Matrix Vector Product / Sparsity Pattern / Systolic Array / vector processors / vector supercomputers