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AM69: Benchmarking against C6678

Eddie Koh
Genius 10635 points
Part Number: AM69
Other Parts Discussed in Thread: MATHLIB, FFTLIB

Migrating customer from C6678 to AM69.

Is there any standard benchmarking data for for C7x DSP vs C66x?

- Such as Dhrystone, or other DSP benchmarking standards

  • 0
    TI__Genius 10170 points

    Hi Eddie,

    For performance data, we have provided cycle counts for various kernels we have optimized for C66x and C7x.

    In the 9.2 RTOS SDK for J721E you can find various libraries for C66x optimized kernels, which also have performance data. I will point out a few relevant documents below:

    Included in ti-processor-sdk-rtos-j721e-evm-09_02_00_05:

    C66x

    • dsplib_c66x_3_4_0_0/docs/DSPLIB_C66x_TestReport.html
      • Common DSP functions
    • mathlib_c66x_3_1_2_1/docs/MATHLB_c66x_TestReport.html
      • Common math functions
    • vxlib/docs/VXLIB_c66x_TestReport.html
      • Vision processing functions

    In the 9.2 RTOS SDK for J784S4 you can find various libraries for C7x optimized kernels, which have performance data. I will point out a few relevant documents below: 

    Included in ti-processor-sdk-rtos-j784s4-evm-09_02_00_05:

    C71x

    • dsplib_09_02_00_04/docs/user_guide/performance_summary.html
    • mathlib_09_02_00_04/docs/user_guide/performance_summary.html
    • vxlib_09_02_00_04/docs/user_guide/performance_summary.html

    The following two don't have C66x equivalents since many of the functions (in the case of FFTLIB) and all the functions (in the case of MMALIB) utilize the MMA which is unique to the C7x architecture, but including them below for your reference:

    • fftlib_09_02_00_04/docs/user_guide/performance_summary.html
    • mmalib_09_02_00_08/docs/datasheet/performance_summary.html

    You can compare the performance between the same function implemented on the C66x vs C71x architectures with data from DSPLIB, MATHLIB, and VXLIB. 

    Best,

    Asha