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R2022a is much slower than R2021

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Saadan Ansari
Saadan Ansari 2022-4-8
回答： Teresa Hubscher-Younger 2022-4-8
Running a distinct simulink model in R2021a and then in R2022a, revelas that R2022a is significantly slower than R2021a.
R2021a
Stoptime 10
Data volume: 1.4580e+05 LDPC data
Win Stopwatch: 00:07:56
R2022a
Stoptime 10
Data volume: 1.4580e+05 LDPC data
Win Stopwatch: 00:16:43
The Simulink Model comprises several end-to-end communication links: channel coding+bit mapping+SRRC filter+modulation+AWGN+demodulation+bit demapping+channel decoding.
It seems I have to switch back to R2021a.
What is in R2022a so different than R2021a in terms of performance of execution?
>> ver
MATLAB Version 9.12 (R2022a)
Simulink Version 10.5 (R2022a)
Communications Toolbox Version 7.7 (R2022a)
DSP System Toolbox Version 9.14 (R2022a)
Signal Processing Toolbox Version 9.0 (R2022a)

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回答（1 个）

Teresa Hubscher-Younger
You can try a few things like Update Advisor or Performance Advisor, which are tools that catch things that will slow down performance when updating:
https://www.mathworks.com/help/simulink/ug/consult-the-upgrade-advisor.html
https://www.mathworks.com/help/simulink/ug/consult-the-performance-advisor.html
If this doesn't fix things, I would contact Tech Support.
This page has other advice about Speeding Up Simulink, but I think it's not directly addressing upgrades:
https://www.mathworks.com/help/simulink/ug/speed-up-simulation.html
Hope this helps. :)

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