SPRAD45 July   2022 AM623 , AM625

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Processor Core Benchmarks
    1. 2.1 Dhrystone
  5. 3Compute and Memory System Benchmarks
    1. 3.1 Memory Bandwidth and Latency
      1. 3.1.1 LMBench
      2. 3.1.2 STREAM
    2. 3.2 CoreMark®-Pro
    3. 3.3 Fast Fourier Transform
    4. 3.4 Cryptographic Benchmarks
  6. 4Graphics Processing Unit Benchmarks
    1. 4.1 Glmark2 and Kanzi
    2. 4.2 GFXBench5
  7. 5References

2.1 Dhrystone

Dhrystone is a core only benchmark that runs from warm L1 caches in all modern processors. It scales linearly with clock speed. The score calculated by normalizing the time it takes the benchmark loop to run by the reference 1 MIPS machine score of 1757. Even though the benchmark was introduced in 1984 by Reinhold P. Weicker, Dhrystone still gets used in embedded processing. It is common to further normalize to DMIPS/MHz/core as the score scales linearly with clock speed. For standard Arm cores, the DMIPS/MHz is identical to the same compiler and flags. Dhrystone is a single core benchmark, a simple sum of multiple cores running the benchmark in parallel is sometimes used. The aggregate score for AM62 with four A53 cores at 1.2 GHz (14228 DMIPS).

Table 2-1 Dhrystone Benchmarks
Cortex-A53 (1.2 GHz)
Dhrystones 62500000
Normalized Dhrystones (divide by 1757 reference for 1MIPS) 3557
DMIPS/MHz each core 3
Compiler and flags GCC 9.2 -march=ARMv8 -O3
Operating System Linux 5.10 (2021 LTS)