1 © 2016 The MathWorks, Inc. Optimization and Implementation of Embedded Signal Processing Algorithms Jonas Rutström Senior Application Engineer
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1© 2016 The MathWorks, Inc.
Optimization and Implementation of
Embedded Signal Processing Algorithms
Jonas Rutström
Senior Application Engineer
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1. What’s your algorithm?
Two important questions in embedded design...
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2. What’s your target?
Two important questions in embedded design...
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Targets are very different...
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DSP MCU SoC/FPGA
The embedded hardware might be very different...
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Workflow | Idea to implementation
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Workflow | Idea to implementation
Prototyping
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Workflow | Idea to implementation
Prototyping
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Workflow | Idea to implementation
Prototyping Production
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Workflow | Idea to implementation
Prototyping Production
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Workflow | Idea to implementation
Prototyping Production
Optimization
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Let’s take a step back...
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What do we mean with optimization?
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Memory ReadabilitySpeed Target
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Memory ReadabilitySpeed Target
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Optimization at different phases in the development...
C SoC/FPGAPrototyping
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Optimization at different phases in the development...
C SoC/FPGAPrototyping
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Optimization at different phases in the development...
C SoC/FPGAPrototyping
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Optimization at different phases in the development...
Prototyping
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Profiling!
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Profiling in MATLAB
tic/toc
% start timer
tic
% execute code
out = myFunction(in);
% stop timer (and store
% elapsed time)
et = toc;
profile
% turn on profiler
profile on
% execute code
out = myFunction(in);
% turn off profiler
profile off
% open html report
profile report
Where are the bottlenecks?How long did it take?
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Profiling in MATLAB
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Profiling in Simulink
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Example(Profiling when prototyping in MATLAB)
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Optimization at different phases in the development...
C SoC/FPGAPrototyping
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Now, lets take a closer look of the
workflow in embedded design!
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Key Detection Algorithm
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System Design
Component Integration
Optimize
System Object
System Object(Reference Design)
ARM
FPGA
RF
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
Simulink
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DEMO(System Integration and Generating Code for ARM Cortex A9 from Simulink)
(Including verification with PIL)
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System Design
Component Integration
Optimize
System Object
System Object(Reference Design)
ARM
FPGA
RF
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A few words about Embedded Coder...
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Embedded Coder Quick Start
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DEMO(Embedded Coder Quick Start)
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Another use case...
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
MATLAB
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Example(Generating Code ARM Cortex A9 from MATLAB)
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System Design
Component Integration
Optimize
System Object
System Object(Reference Design)
ARM
FPGA
RF
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Example: Workflow for embedded design
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
Speed / Area Optimizations
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Area Optimization for FPGA implementation
ARM
FPGA
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Example(Area Optimization for FPGA Implementation)
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System Design
Component Integration
Optimize
System Object
System Object(Reference Design)
ARM
FPGA
RF
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Summary Optimization and Implementation of Embedded Signal Processing Algorithms
Reference Design
Constrained Design(E.g. Fixed-Point)
Target Specific Design
C(E.g. Fixed-Point)
Target Specific Design
SoC/FPGA(E.g. Fixed-Point)
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Questions?
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