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physics.comp-ph2025
Residual-based Chebyshev filtered subspace iteration for sparse Hermitian eigenvalue problems tolerant to inexact matrix-vector products
Nikhil Kodali, Kartick Ramakrishnan, Phani Motamarri
Chebyshev Filtered Subspace Iteration (ChFSI) is widely used for computing a small subset of extremal eigenpairs from large matrices, particularly when the eigenpairs must be compu…
physics.comp-ph2022★ 3 cited
Fast hardware-aware matrix-free algorithm for higher-order finite-element discretized matrix multivector products on distributed systems
Gourab Panigrahi, Nikhil Kodali, Debashis Panda +1
Recent hardware-aware matrix-free algorithms for higher-order finite-element (FE) discretized matrix-vector multiplications reduce floating point operations and data access costs c…