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Jed Brown

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iterative-method
134/100 score
15/20 answers

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31 posts edited
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277 votes cast
Summary Answers Questions Tags Badges Bookmarks Bounties Reputation All actions

13 Questions

Votes Activity Newest Views
23
31
votes
4
answers
2k
views

Why is local conservation important when solving PDEs?

pde hyperbolic-pde fluid-dynamics
Apr 30 '19 at 5:42 xzczd 308
23
27
votes
2
answers
13k
views

Why is my iterative linear solver not converging?

linear-algebra petsc preconditioning krylov-method iterative-method
Jan 7 '12 at 1:29 Community♦ 1
14
23
votes
1
answer
12k
views

Why is Newton's method not converging?

petsc pde implicit-methods
Mar 29 '19 at 19:12 F14 5
9
19
votes
2
answers
2k
views

How to determine if a numerical solution to a PDE is converging to a continuum solution?

pde stability convergence
Jan 9 '13 at 16:09 Jed Brown 24.8k
1
18
votes
4
answers
609
views

Which methods can ensure that physical quantities remain positive throughout a PDE simulation?

pde fluid-dynamics hyperbolic-pde
Jul 14 '13 at 10:44 M.H. 31
7
17
votes
4
answers
5k
views

Portable multicore/NUMA memory allocation/initialization best practices

performance memory-management multicore
Dec 19 '13 at 10:13 eoinbrazil 111
5
16
votes
2
answers
298
views

What are the best practices for algorithms and implementation of multi-physics simulations?

pde multiphysics implicit-methods software
Dec 3 '11 at 21:26 Sean Farley 1,360
4
15
votes
3
answers
850
views

What is a scalable preconditioner for high-frequency Helmholtz?

pde
Jul 24 '13 at 18:09 Jack Poulson 7,359
6
15
votes
1
answer
4k
views

How can I estimate the condition number of a large sparse matrix using PETSc?

petsc linear-algebra
Sep 17 '12 at 14:16 Jed Brown 24.8k
2
14
votes
1
answer
592
views

Is there a multigrid algorithm that solves Neumann problems and has a convergence rate independent of the number of levels?

pde multigrid
Dec 2 '11 at 7:30 celion 331
4
13
votes
1
answer
435
views

What spatial discretizations work for incompressible flow with anisotropic boundary meshes?

pde finite-element fluid-dynamics stability incompressible
Jul 22 '13 at 12:26 Jed Brown 24.8k
3
13
votes
1
answer
367
views

How to construct well-balanced finite volume and discontinuous Galerkin methods for hyperbolic PDEs with source terms?

pde hyperbolic-pde
Nov 30 '11 at 12:02 David Ketcheson 15.7k
3
11
votes
1
answer
251
views

Statistical models for local memory/compute, network latency, and bandwidth jitter in HPC

performance hpc statistics
Apr 5 '13 at 18:33 RSFalcon7 159
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