Different output for a program on different laptop

Question

SHIVA SHANKER 2023-2-15

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回答： Sachin 2023-2-15

Hello all, I am using MATLAB R2021b in different Laptops( HP Notebook PC with windows 10 and Lenova idea pad with windows 11). When I am running a program getting different result. Is matlab ouput depends on OS and Laptop version?

Thank you.

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Answer 1

Sachin 2023-2-15

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Hi Shiva,

MATLAB performances are same in Windows, MAC, Linux , although differences can occur among platform for the following reason.

MathWorks builds its products with a different compiler on each platform, and each has its own performance characteristics

2. The operating systems perform differently, especially in the case of disk- or graphics-intensive operations.

The different operating systems have Basic Linear Algebra Subprograms ( BLAS ) and Linear Algebra PACKage (LAPACK) compiled differently, and on MS Windows you may be using Intel's MLK. MS Windows is known for having a different version of MLK for different CPU architectures (AMD vs Intel for example, but even different families within a manufacturer.)

For this reason, you should not expect that the bottommost bits of a calculation will be the same on different systems.

For more information you can refer the following pages –

https://undocumentedmatlab.com/articles/undocumented-feature-function

https://www.mathworks.com/support/requirements/choosing-a-computer.html#:~:text=MATLAB%20performance%20is%20similar%20on%20Windows%20%C2%AE%2C%20Mac,in%20the%20case%20of%20disk-%20or%20graphics-intensive%20operations.

Regards

Sachin