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Home/Matlab/Why is my Simulink Desktop Real-Time simulation very slow or halts in Windows when Hyper-V is enabled?

Why is my Simulink Desktop Real-Time simulation very slow or halts in Windows when Hyper-V is enabled?

PuTI / 2025-03-31
Why is my Simulink Desktop Real-Time simulation very slow or halts in Windows when Hyper-V is enabled?
Matlab News

I am trying to use Simulink Desktop Real-Time (SLDRT) on my Windows machine, but when I launch the example model "sldrtex_vdp.slx", it runs very slow, halts, or may even cause a blue-screen.
The following warning message may be prompted out: 

Warning: The "Real-Time Synchronization" block has timed out while
trying to synchronize to real-time kernel.
The following warning messages may be shown in Diagnostic Viewer:

Model sldrtex_vdp loaded
A disconnect message was sent to the target 10 seconds ago. Waiting for response.. [6 similar]
Never received disconnect response from target. Disconnecting…
Model sldrtex_vdp unloaded
Additionally, I may see the following error message during the kernel installation (since R2019b) or when trying to run a real-time simulation (since R2020b):

The Hyper-V hypervisor has been detected. The Simulink Desktop Real-Time kernel
cannot run in the presence of the hypervisor. Please disable the Hyper-V operating
system component before attempting to use Simulink Desktop Real-Time.I am trying to use Simulink Desktop Real-Time (SLDRT) on my Windows machine, but when I launch the example model "sldrtex_vdp.slx", it runs very slow, halts, or may even cause a blue-screen.
The following warning message may be prompted out: 

Warning: The "Real-Time Synchronization" block has timed out while
trying to synchronize to real-time kernel.
The following warning messages may be shown in Diagnostic Viewer:

Model sldrtex_vdp loaded
A disconnect message was sent to the target 10 seconds ago. Waiting for response.. [6 similar]
Never received disconnect response from target. Disconnecting…
Model sldrtex_vdp unloaded
Additionally, I may see the following error message during the kernel installation (since R2019b) or when trying to run a real-time simulation (since R2020b):

The Hyper-V hypervisor has been detected. The Simulink Desktop Real-Time kernel
cannot run in the presence of the hypervisor. Please disable the Hyper-V operating
system component before attempting to use Simulink Desktop Real-Time. I am trying to use Simulink Desktop Real-Time (SLDRT) on my Windows machine, but when I launch the example model "sldrtex_vdp.slx", it runs very slow, halts, or may even cause a blue-screen.
The following warning message may be prompted out: 

Warning: The "Real-Time Synchronization" block has timed out while
trying to synchronize to real-time kernel.
The following warning messages may be shown in Diagnostic Viewer:

Model sldrtex_vdp loaded
A disconnect message was sent to the target 10 seconds ago. Waiting for response.. [6 similar]
Never received disconnect response from target. Disconnecting…
Model sldrtex_vdp unloaded
Additionally, I may see the following error message during the kernel installation (since R2019b) or when trying to run a real-time simulation (since R2020b):

The Hyper-V hypervisor has been detected. The Simulink Desktop Real-Time kernel
cannot run in the presence of the hypervisor. Please disable the Hyper-V operating
system component before attempting to use Simulink Desktop Real-Time. slow, timeout, sldrt, bluescreen, bsod, hyper-v, hypervisor MATLAB Answers — New Questions

​

Tags: matlab

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