MultipleQR

Version 3.0.2 (14.4 KB) by Bruno Luong
Perform a bunch of QR factorization of same size matrix
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153 Downloads
Updated 2 Dec 2020

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If you have many (small) matrices that need to factorized in QR, instead of calling MATLAB qr in the for-loop you could use this function that can reduce by more than 6 the runtime.

According to my test MultipleQR is faster than MATLAB qr when dimension <= 10 and slower beyond that

Cite As

Bruno Luong (2026). MultipleQR (https://uk.mathworks.com/matlabcentral/fileexchange/68976-multipleqr), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2018b
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
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MultipleQR

Version Published Release Notes
3.0.2

Uncheck compatibility with Linux and Mac, due to unknown OpenMP mex building command by the author
3.0.1

Implementation in MEX openmp
2.0.4

speed optimization
2.0.3

Add a note on the determinant value of Q
2.0.2

Speed optimization
Add script for benchmark
2.0.1

Fix issue when number of page is 0
2.0.0

Fix issue of tall matrices
Option to output economic size output
Implement multi-solver using QR decomposition
1.0.0