3 citations · 3 across the 3 of their papers we have counts for
4 papers
Accelerating matrix-free fast diagonalization and preconditioned linear solvers for higher-order finite element discretized elliptic problems on distributed GPUs
Gourab Panigrahi, Phani Motamarri
The time to solution of an iterative solver depends on the number of iterations and the cost per iteration. This paper develops algorithms that reduce both for elliptic problems di…
Towards exascale fully relativistic pseudopotential density functional theory calculations enabled by mixed-precision computation and compressed-communication using residual based subspace iteration
Nikhil Kodali, Gourab Panigrahi, Nishant Gupta +6
Materials exhibiting noncollinear magnetism or strong spin-orbit-coupling underpin many spintronic and topological applications, but their simulations require complex two-component…
Matrix-free algorithms for fast ab initio calculations on distributed CPU architectures using finite-element discretization
Gourab Panigrahi, Phani Motamarri
Finite-element (FE) discretisations have emerged as a powerful real-space alternative to large-scale Kohn-Sham density functional theory (DFT) calculations, offering systematic con…
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…