Damien
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Fast explicit solution for $\mathbf{A}\mathbf{x} = \mathbf{b}$, $ \mathbf{b} \in \mathbf{R}^3$, low condition number
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5 votes

FLOPS count based on the suggestions above: LU, no pivoting: Mul = 11, Div/Recip = 6, Add/Sub = 11, Total = 28; or Mul = 16, Div/Recip = 3, Add/Sub = 11, Total = 30 Gaussian Elimination with back-...

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Any useful application for smartphones in the world of computational science?
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5 votes

The current generation of ARM processors have terrible floating-point performance. IIRC, the Cortex-A8 and Cortex-A9 are nine cycles for a double. The latest Cortex-A15 is finally single-cycle double,...

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Do I need to learn C?
4 votes

There is a bit of copy-paste from my answer to this question, with a few extra details. I work in industry (surveying and machine control equipment manufacturer) using weak embedded processors (think ...

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Computational complexity and implementation of UDU Modified Cholesky Rank 1 Update
1 votes

Since a UDU rank 1 update is hard to find, below is a MATLAB implementation (without warranties of any kind) Downdate function [Ubar, Dbar] = ThorntonRank1Downdate(U, D, c, a) Ubar = U; Dbar = D; ...

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Soft Question: Where does Python fit into the picture?
1 votes

To add my two cents, I have had both recent academic experience (a fresh PhD grad :) ) and industry experience (a surveying equipment manufacturer). We do plenty of numeric computations on weak ...

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