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bench

MATLAB benchmark

Syntax

bench
bench(N)
bench(0)
t = bench(N)

Description

bench times six different MATLAB® tasks and compares the execution speed with the speed of several other computers. The six tasks are:

TestDescriptionPerformance Factors
LUPerform LU of a full matrixFloating-point, regular memory access
FFTPerform FFT of a full vectorFloating-point, irregular memory access
ODESolve van der Pol equation with ODE45Data structures and MATLAB function files
SparseSolve a symmetric sparse linear systemMixed integer and floating-point
2-DPlot Bernstein polynomial graph2-D line drawing graphics
3-DDisplay animated L-shape membrane logo3-D animated OpenGL graphics

A final bar chart shows speed, which is inversely proportional to time. The longer bars represent faster machines, and the shorter bars represent the slower ones.

bench(N) runs each of the six tasks N times.

bench(0) just displays the results from other machines.

t = bench(N) returns an N-by-6 array with the execution times.

More About

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Tips

    Note:   A benchmark is intended to compare performance of one particular version of MATLAB on different machines. It does not offer direct comparisons between different versions of MATLAB as tasks and problem sizes change from version to version.

The LU and FFT tasks involve large matrices and long vectors. The 2-D and 3-D tasks measure graphics performance, including software or hardware support for OpenGL. The command

opengl info

describes the OpenGL support available on a particular machine.

Fluctuations of five or ten percent in the measured times of repeated runs on a single machine are not uncommon. Your own mileage may vary.

See Also

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