Matlab code giving wrong answers on system with i9 processor
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Mike Collins
on 22 Jan 2020
Commented: Star Strider
on 6 Feb 2020
Hello,
We have many different types of computers with Matlab installed on them. One computer in particular seems to be doing calculations wrong.
This system is an HP Zbook with an intel i9 9880H processor in it. The system has had Matlab R2017b installed on it which has been removed and reinstalled multiple times with the same exact results.
Have you seen anything like this or have any idea what may be causing it?
Thank you,
Mike
3 Comments
James Tursa
on 22 Jan 2020
Can you isolate the calculation that gives different results and post it?
Accepted Answer
Mike Collins
on 5 Feb 2020
Edited: Mike Collins
on 5 Feb 2020
7 Comments
Walter Roberson
on 6 Feb 2020
One question I would have is whether the "errors" occur on all array sizes, or only on "small" arrays, or only on "larger" arrays. I ask because for "larger" arrays, MATLAB tends to call BLAS or LAPACK or MKL functions to do highly optimized calculations, but for "smaller" arrays, MATLAB executes the operations itself.
Star Strider
on 6 Feb 2020
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