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CPU Performance Test

Test Description​

This test uses the Coremark tool for testing. The source code and compiled software are located in the 10-cpu_performance directory. CoreMark is a benchmark test program that mainly aims to test the performance of processor cores. The standard testing method of CoreMark is to run the CoreMark program multiple times within a unit of time under certain configuration parameters, and the industry score is presented as Coremark / CPU clock Mhz / Core num, that is, coremark runs per second / cpu clock frequency / number of cpu cores, resulting in a final score.

Test Method​

  1. Unzip coremark-main.zip and enter the coremark-main folder.
  2. Execute ./coremark_single 0x0 0x0 0x66 0 7 1 2000 > ./run1.log, wait for the program to finish; execute ./coremark_multi 0x0 0x0 0x66 0 7 1 2000 > ./run2.log, wait for the program to finish.
  3. Check the single core test score in run1.log, as follows:
2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 20830
Total time (secs): 20.830000
Iterations/Sec   : 5280.844935
Iterations       : 110000
Compiler version : GCC6.5.0
Compiler flags   :  -O3 -funroll-all-loops -static --param max-inline-insns-auto=550 -DPERFORMANCE_RUN=1  -lrt
Memory location  : Please put data memory location here
                        (e.g. code in flash, data on heap etc)
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0x33ff
Correct operation validated. See README.md for run and reporting rules.
CoreMark 1.0 : 5280.844935 / GCC6.5.0  -O3 -funroll-all-loops -static --param max-inline-insns-auto=550 -DPERFORMANCE_RUN=1  -lrt / Heap

Note the column Iterations/Sec, which indicates how many iterations per second, which is the coremark score in the formula above. According to the formula, the single-core score for this x3 is 5280.844935 / 1200 (default frequency) / 1 = 4.400, which falls within the normal range.

The multi-core score is saved in ./run2.log. The calculation of the multi-core score is similar to that of the single-core score and is not repeated here.

Test Metrics​

  • Single core score X > 4.2
  • Quad-core score X > 4.2

AppendixThe cross-compilation process for coremark is as follows:​

  1. Go to the coremark-main directory and replace the CC compiler path in aarch64/core_portme.mak with your own gcc path for cross-compilation.
  2. Execute make PORT_DIR=aarch64 XCFLAGS="-O3 -funroll-all-loops -static --param max-inline-insns-auto=550 -DPERFORMANCE_RUN=1" REBUILD=1 run1.log to compile the single-core test program; execute make PORT_DIR=aarch64 XCFLAGS="-O3 -funroll-all-loops -static --param max-inline-insns-auto=550 -DPERFORMANCE_RUN=1 -DMULTITHREAD=4 -DUSE_PTHREAD -pthread" REBUILD=1 run1.log to compile the 4-core test program, where the -DMULTITHREAD= parameter controls the number of cores for the test program.
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