Stack Exchange

Matt Knepley

Chicago, IL

http://people.cs.uchicago.edu/~knepley

I work at the University of Chicago and Argonne National Laboratory and am part of the PETSc Project. Here is my webpage.

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Top Questions
Top Answers
47
What are good ways to document scientific software?
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36
Is it worthwhile to write unit tests for scientific research codes?
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35
What guidelines should I follow when choosing a sparse linear system solver?
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32
Is algorithmic analysis by flop-counting obsolete?
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19
Future of OpenCL?
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17
What software is good to use for parallel debugging?
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14
Performance differences between ATLAS and MKL?
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13
What guidelines should I use when searching for good preconditioning methods for a specific problem?
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13
Why is my parallel solver slower than my sequential solver?
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12
Recommendations and experiences on which license to choose for software?
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10
Desktop software with HPC resources for back end number crunching
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10
numerical integration with possible division by 'zero'
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9
Libraries for solving sparse linear systems
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8
What programming paradigms should I be investing in if I want my code to run on petascale machines in the future?
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8
How to deal with too much data?
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8
Does the matrix condition number affect accuracy of iterative linear solvers?
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7
Are there operator splitting approaches for multiphysics PDEs that achieve high order convergence?
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7
Estimation of condition numbers for very large matrices
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6
Linear regression via SVD not producing best fit with escalating polynomial degree
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5
Petsc's xxxSetxxx methods: Own Pointer or Copy Values?
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5
What are the best practices for algorithms and implementation of multi-physics simulations?
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5
Parallel I/O options, in particular parallel HDF5
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5
COMSOL on Ubuntu (10.04 LTS and 11.04)
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5
How do I read a binary file into PETSc as a matrix?
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5
Calculation of the sparsity structure for finite element matrices
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5
Is it usual to have no convergence checking in Multigrid?
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