Profiling DSP Code on a TI DM6437

Comare and contrast 3 different methods of profiling DM6437 DSP code

Description

This paper walks you through the process of profiling code running on a Texas Instruments DM6437 DSP. To demonstrate the process we profiled many common DSP algorithms including Auto-Correlation, the Dot Product, the FFT, an FIR filter, an IIR Filter, a Matrix Multiply, and an LMS Filter. These algorithms were profiled under different conditions. We examined the effects of data type, arithmetic, compiler optimization levels, and the use of DSP intrinsics. For each DSP algorithm profiled, we compared automatically generated C code to TI hand-optimized assembly. The bulk of this paper uses a profiling technique integrated with MATLAB, Simulink, the Real-Time Workshop, and Code Composer Studio by Texas Instruments (TI). This technique uses TI STS Objects strategically placed into the code serving as time markers. We also compare and contrast this technique with more traditional profiling approaches which are independent of any 3rd party software or IDE.

• Required Products: Embedded IDE Link CC; Fixed-Point Toolbox; Real-Time Workshop; Real-Time Workshop Embedded Coder; Signal Processing Blockset; Signal Processing Toolbox; Simulink; Simulink Fixed Point; Target Support Package TC6
• MATLAB release: MATLAB 7.7 (R2008b)
• Other requirements: Spectrum Digital DM6437 EVM if you want to reproduce the results on the hardware

Other Files

ac_compare.mdl,
ac_measure.mdl,
blink_led.mdl,
build_and_profile.m,
dp_compare.mdl,
dp_measure.mdl,
elliptic_bpf_4th_order.fda,
example_sel.txt,
fft_compare.mdl,
fft_input_1024.mat,
fft_input_256.mat,
fft_measure.mdl,
fir_compare.mdl,
fir_lpf.fda,
fir_measure.mdl,
fir_measure_adc.mdl,
gen_iir_coeffs.m,
iir_compare.mdl,
iir_measure.mdl,
lms_compare.mdl,
lms_measure.mdl,
mm_compare.mdl,
mm_measure.mdl,
Must_have_WebEx_Player.doc,
profile_dm6437.doc,
profile_ext_mode.mdl,
profile_tfl.mdl,
profile_using_atomic_ss.mdl,
profile_using_led.mdl,
profile_using_timers.mdl,
README.TXT,
run_exsel.m,
~$ofile_dm6437.doc