ZC702 Benchmark

Zynq-7000 AP SoC Benchmark

This section describes the Zynq-7000 AP SoC benchmark tests for the ZC702 board. These tests were run on Linux 3.0.0 kernel.

Three tests were run for this benchmark

1) Dhrystone 2.1
2) Whetstone Double Precision 1.2
3) Linpack

System Configuration

Product : Z-7020 based ZC702 evaluation platform
Operating System : Linux OS with kernel version 3.0.0
CPU Core frequency : 666 MHz
RAM frequency : 533 MHz
Tool-Chain : Sourcery CodeBench Lite for Xilinx GNU/Linux 2011.09-50
Compiler flags : -O3 –Ofast -mcpu=cortex-a9 -mfp=vfpv3-fp16 –DNDEBUG
CPU freq (in MHz) : 666
DDR freq (in MHz) : 533

Results 

ZC702 Linux Dhrystone (DMIPS/MHz) : 2.3
Whetstone (Whetstones/MHz) : 2.19
Linpack (KFLOPS/MHz) : 118.5

This illustrates that the Zynq 7000 AP SoC does not compromise the re-programmability at expense of hardened ARM Cortex-A9 CPU based raw power. This tackles the challenges of today’s CPU architects in providing system design flexibility & scalability for SoC developers in creation of customizable applications platforms.

Source Files

ZC702 Benchmark Source files - tar

Building the application

1) Open sdk

2) Create a empty linux project named Dhrystone

  • If a HW platform is not specified, choose the existing ZC702_hw_platform

3) Add the link to the folder "\ZC702_Benchmark\src\Dhrystone"

  • File->New->Folder->Advanced->Link to alternate location (Linked Folder)
  • Browse to "\ZC702_Benchmark\src\Dhrystone"

4) Add the include directory "ZC702_Benchmark\include"

5) Add the symbol - TIME, ITERATIONS=100000000, NDEBUG

6) Set the optimization flags as "-O3 –Ofast -mcpu=cortex-a9 -mfp=vfpv3-fp16 –DNDEBUG"

7) In the ARM Linux gcc linker settings under the C/C++ build settings, add the "thobjs_lite" library and add the path "\ZC702_Benchmark\libs" for the Libraries section

8) Build the project

Note:

  1. For Whetstone define the symbol "ITERATIONS=1000000"
  2. For Whetstone add the math library "m" to ARM Linux gcc linker
  3. For Linpack define the symbol "ITERATIONS=1000000

Running the application

Follow the standard Linux Application Debugging steps as described in the Zynq CTT guide under section Linux Booting and Application Debugging Using SDK

ARM Reference

ARM Reference for the Cortex-A9 core is 2.5 DMIPS/MHz/Core. DMIPS for other processor architectures can be referenced here

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