【瑞萨RA4系列开发板体验】基准性能测试之二:浮点计算能力whetstone

ti

前言

上一篇我们使用Dhrystone进行了整数运算性能的测试。这次我们使用whetstone进行浮点相关的计算性能测试。

过程添加代码

获取代码

http://www.roylongbottom.org.uk/classic_benchmarks.tar.gz

解压classic_benchmarks.tar.gz将classic_benchmarksclassic_benchmarkssource_codewhetstone文件夹复制到自己的工程。

添加代码

将classic_benchmarkssource_codewhetstone文件夹复制到工程目录，并添加工程中

移植接口

whets.c中

161行 **************************************************************************

改为

**************************************************************************/

167行注释掉

//#include "cpuidh.h"

添加 extern uint32_t Systick_Gettime(void);

#include

201行int main(int argc, char *argv[])

改为

int whets_main(int argc, char *argv[])

212行

int nopause = 1;

改为

int nopause = 0;

注释掉228行以下内容

#if 0

getDetails();

for (i=1; i<10; i++)

{

printf("%sn", configdata);

}

local_time();

printf("n");

printf("##########################################n");

printf("%s Precision C Whetstone Benchmark %s, %sn", Precision, opt, timeday);

outfile = fopen("whets.txt","a+");

if (outfile == NULL)

{

printf ("Cannot open results file nn");

printf("Press Enter to exitn");

i = getchar();

exit (0);

}

#endif

注释掉314行以下内容

#if 0

fprintf (outfile, "n");

fprintf (outfile, "##############################################nn");

for (i=1; i<10; i++)

{

fprintf(outfile, "%s n", configdata);

}

fprintf (outfile, "n");

fprintf (outfile, "##############################################nn");

fprintf (outfile, "Whetstone %s Precision C Benchmark %s, %sn",Precision, opt, timeday);

fprintf (outfile, "n");

fprintf (outfile,"Loop content Result"

" MFLOPS MOPS Secondsnn");

for (section=1; section<9; section++)

{

fprintf (outfile, "%s %24.17f ", headings[section],

results[section]);

if (loop_mops[section] == 99999)

{

fprintf (outfile," %9.3f %9.3fn",

loop_mflops[section], loop_time[section]);

}

else

{

fprintf (outfile, " %9.3f %9.3fn",

loop_mops[section], loop_time[section], results[section]);

}

fflush(outfile);

fprintf (outfile, "nMWIPS ");

fprintf (outfile, "%39.3f%20.3fnn",mwips,TimeUsed);

fprintf (outfile, "Results to load to spreadsheet ");

fprintf (outfile, " MWIPS Mflops1 Mflops2 Mflops3 Cosmops"

" Expmops Fixpmops Ifmops Eqmopsn");

fprintf (outfile, "Results to load to spreadsheet ");

fprintf (outfile, " %9.3f %9.3f %9.3f", mwips, loop_mflops[1],

loop_mflops[2]);

fprintf (outfile, " %9.3f %9.3f %9.3f", loop_mflops[6],

loop_mops[5], loop_mops[8]);

fprintf (outfile, " %9.3f %9.3f %9.3fnn", loop_mops[4],

loop_mops[3], loop_mops[7]);

fflush(outfile);

fclose (outfile);

printf ("n");

printf ("A new results file, whets.txt, will have been created in the samen");

printf ("directory as the .EXE files, if one did not already exist.nn");

if (nopause)

{

printf(" Press Enternn");

i = getchar();

}

#endif

407行

start_time();改为

uint32_t s_stime_u32 = SysTick_Gettime();

423行

end_time();改为

uint32_t s_etime_u32 = SysTick_Gettime()();

其他地方类似不再枚举

测试

hal_entry中

申明 void whets_main (int argc, char *argv[]);

调用whets_main(0,0);

http://www.roylongbottom.org.uk/whetstone%20results.htm

下可以对比

总结

本篇测试了浮点运算能力，还有其他的线性浮点运算能力测试linpack，并发计算基准测试livermore_loops等都可以参考，不再一一测试。

h1654155285.8644 · 2022-12-12 09:33:35

浮点运算能力相当于AM386，但是这个单片机的频率100MHz以上，是不是说明该架构的浮点运算能力较差。

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【瑞萨RA4系列开发板体验】基准性能测试之二:浮点计算能力whetstone

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