MATLAB: What is “Cache Software architecture objects simulink” during Simulink model update? and why does it take a long time

"cache software architecture objects simulink"MATLABmodel updatesimulink

Hi All, I am simulating a Simulink Model in MATLAB R2011B. The Compilation phase takes a long time. Upon doing sldiagnostics('sys', 'CompileStats'), I found that the total compilation time was 15s. Of this, about 8s were taken by an operation called "Cache Software architecture objects simulink". What does this operation do? And why does it take a long time?

Best Answer

The specific meaning of the "sldiagnostics" messages is meant for internal debugging, and in fact the specific context of the error can change depending on the model.

To improve the performance of your model, I suggest looking through Technical Note: Improving Simulation Performance in Simulink, or a related MATLAB Answers question: How can I speed up simulation of my Simulink model?

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MATLAB: Negative memory usage

According to the document

ProcessMemUsage—The amount of memory consumed in each phase. Sum the ProcessMemUsage across all the phases to get the memory consumption during the entire operation:

TotalMemory = sum([statRpt.Statistics(:).ProcessMemUsage])

So, if step 2 uses less memory than step 1, then the number will be negative. Keep in mind, this is the memory usage of the computer that compiles or builds the model, not the memory usage of the model itself.

MATLAB: Simulink takes a long time to start a model with a Embedded Matlab block

Hi Thomas,

I understand that an Embedded MATLAB block in your model is taking a long time (30 minutes) to compile every time you simulate your model, and you would like to debug this issue and find possible optimizations.

For debugging this issue, you can use the 'sldiagnostics' command to investigate which parts of the process are taking a long time. Since you are interested in debugging long compilation times, I suggest that you use this command with the 'CompileStats' option, as follows:

>> sldiagnostics('myModel','CompileStats')

See the 'sldiagnostics' function documentation at the link below for more information:

http://www.mathworks.com/help/releases/R2010b/toolbox/simulink/slref/sldiagnostics.html

If your Embedded MATLAB block is not changing between runs of your simulation, you could place your Embedded MATLAB block into a model reference to speed up compilation. By default, referenced models will only be re-compiled if a change is detected. Here are some documentation links to get you started with model referencing:

http://www.mathworks.com/help/releases/R2010b/toolbox/simulink/ug/bq_5wvg-1.html

http://www.mathworks.com/help/releases/R2010b/toolbox/simulink/gui/bq7cyf9-1.html

http://www.mathworks.com/help/releases/R2010b/toolbox/simulink/slref/modelvariants.html

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MATLAB: Negative memory usage

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