Dhrystone Benchmark

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
  • Sample output for Dhrystone benchmark example

Introduction

Dhrystone is a synthetic benchmark that measures and compares processor performance.

The Dhrystone benchmark program contains 52 assignments, 33 control statements and 17 procedures/ function calls. Unlike Whetstone benchmarking, the program doesn't contain floating point operation and concentrates on string handling and standard code, heavily influenced by hardware and software design, compiler and linker options, code optimizing, cache memory, wait states and integer data types. 103 statements are dynamically executed.

Supported Combinations

Parameter	Value
CPU + OS	a53ss0-0 freertos
Toolchain	arm.gnu.aarch64-none
Boards	am62lx-evm
Example folder	examples/benchmarks/dhrystone_benchmark

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
• To Load and Run an example (see Application Run and debugging using CCS)

Sample output for Dhrystone benchmark example

 BENCHMARK START - DHRYSTONE
 
Dhrystone Benchmark, Version 2.1 (Language: C)
 
- BEGIN cycle count:                         15
- END Cycle count:                           99502570
- USER cycle count:                          99502555
 
BENCHMARK Using clock 1250000000
- Usertime in sec:                           0.079602
- Microseconds for one run through Dhrystone:   0.2
- Dhrystones per Second:                     6281246.0
 
Normalized MIPS/MHz:                         2.8600
BENCHMARK END
 
 All tests have passed.