PIC32 rychlost atd...

[j s]

Pekny test, dakujem za info.

Len pre doplnenie: existuju aj PIC32MX534/564/664,764 ktore maju
spotrebu asi polovcnu, alebo aj o kusok menej ako polovicnu oproti
775/695/795 a podobnym. Novsie PIC32MX1/2 v malych puzdrach maju
spotrebu este zhruba o dalsich 20% mensiu.
A to som niekde zacul nejake "rumors" o 150 alebo 200MHz PIC32, tak som zvedavy.


2013/2/4 Petr Labaj <labaj na volny.cz>:
> Tak jsem neco nasel:
>
> Test je 10 000 pruchodu.
> Prvni sloupec je vzdy cas v sekundach.
>
> PIC32, GCC 4.5.1, MPLAB C32 v2.02:
> 18.4 (PIC32F795L, 80 MHz, Flash, globalni pole, 93.1 mA)
> 18.4 (PIC32F795L, 80 MHz, Flash, lokalni pole, 95.9 mA)
> 18.4 (PIC32F795L, 80 MHz, RAM globalni pole flags, 92.8 mA)
> 20.5 (PIC32F795L, 80 MHz, RAM lokalni pole flags, 100.7 mA)
>
> STM32F4, GCC 4.6.2, Yagarto:
> 10.9 (globalni pole, STM32F407VG, 168 MHz, code Flash/data RAM, 33.9 mA)
> 12.4 (lokalni pole, STM32F407VG, 168 MHz, code Flash/data RAM_CCM, 35.9 mA)
> 11.0 (globalni pole, STM32F407VG, 168 MHz, code Flash/data RAM, 34.3 mA)
> 13.0 (lokalni pole, STM32F407VG, 168 MHz, code Flash/data RAM, 35.8 mA)
> 16.1 (globalni pole, STM32F407VG, 168 MHz, code RAM/data RAM_CCM, 41.7 mA)
> 20.7 (lokalni pole, STM32F407VG, 168 MHz, code RAM/data RAM_CCM, 40.7 mA)
> 17.1 (globalni pole, STM32F407VG, 168 MHz, code RAM/data RAM, 41.5 mA)
> 20.9 (lokalni pole, STM32F407VG, 168 MHz, code RAM/data RAM, 40.7 mA)
>
> 22.8 (globalni pole, STM32F407VG, 80 MHz, code Flash/data RAM_CCM, 16.9 mA)
> 25.8 (lokalni pole, STM32F407VG, 80 MHz, code Flash/data RAM_CCM, 17.0 mA)
> 22.8 (globalni pole, STM32F407VG, 80 MHz, code Flash/data RAM, 17.1 mA)
> 26.9 (lokalni pole, STM32F407VG, 80 MHz, code Flash/data RAM, 16.9 mA)
> 33.5 (globalni pole, STM32F407VG, 80 MHz, code RAM/data RAM_CCM, 16.5 mA)
> 43.7 (lokalni pole, STM32F407VG, 80 MHz, code RAM/data RAM_CCM, 16.3 mA)
> 35.7 (globalni pole, STM32F407VG, 80 MHz, code RAM/data RAM, 16.4 mA)
> 43.7 (lokalni pole, STM32F407VG, 80 MHz, code RAM/data RAM, 15.9 mA)
>
> Vlastni test:
>
> #define TRUE 1
> #define FALSE 0
> #define size 8190
>
> #define ITER 10000
>
> char flags [size+1];
>
> void eratos (void)
> {
> // char flags [size+1];
>
>  register int ii, k;
>  register int prime, count, iter;
>
>  STM_EVAL_LEDOn (LED6);      // signalizace LED start STM32F4_discovery
> // LATD = 6;         // signalizace LED start PIC32
>
>  for (iter=1; iter<=ITER; iter++) {
>   count = 0;
>   for (ii=0; ii<=size; ii++) {
>    flags [ii]=TRUE;
>   }
>   for (ii=0; ii<=size; ii++) {
>    if (flags [ii]) {
>     prime = ii+ii+3;
>     for (k=ii+prime; k<=size; k+=prime) {
>      flags [k] = FALSE;
>     }
>     count++;
>    }
>   }
>  }
>
>  STM_EVAL_LEDOn (LED3);      // signalizace LED end STM32F4_discovery
>  STM_EVAL_LEDOff (LED6);
> // LATD = 1;         // signalizace LED stop STM32
> }
>
> PL
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