GMRES for Poisson Equation #6367
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The non-EB case gradients are handled in EffectivePotentialES.cpp::ComputeSpaceChargeField() The MLMG + EB case gradients are haneled in post_phi_calculation.value()
…s" in inputs file
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GMRES implementation of poisson solver, enabled with "warpx.poisson_solver = gmres".
Instead of pure multigrid via the AMReX MLMG class, this uses an MLMG-preconditioned GMRES algorithm to solve the Poisson equation. More documentation forthcoming.