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Commented out printf statements for quicker simulation time. Also added function minstretDiff, which calculates the number of machine instructions retired during the coremark benchmark's runtime, excluding setup time.

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This commit is contained in:
Abe 2021-07-07 02:28:11 -04:00
parent ab61590f77
commit ed3c06b851
1 changed files with 26 additions and 12 deletions
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38
riscv-coremark/riscv64-baremetal/core_portme.c
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@ -125,14 +125,27 @@ void portable_free(void *p) {
#if SAMPLE_TIME_IMPLEMENTATION
/** Define Host specific (POSIX), or target specific global time variables. */
static CORETIMETYPE start_time_val, stop_time_val;
static unsigned long start_instr_val, stop_instr_val;
/* Function: minstret
/* Function: minstretFunc
This function will count the number of instructions.
*/
void minstretFunc(void)
unsigned long minstretFunc(void)
{
unsigned long minstretAttempt = read_csr(minstret);
ee_printf("Minstret is %lu\n", minstretAttempt);
unsigned long minstretRead = read_csr(minstret);
//ee_printf("Minstret is %lu\n", minstretRead);
return minstretRead;
}
/* Function: minstretDiff
This function will take the difference between the first and second reads from the
MINSTRET csr to determine the number of machine instructions retired between two points
of time
*/
unsigned long minstretDiff(void)
{
unsigned long minstretDifference = MYTIMEDIFF(stop_instr_val, start_instr_val);
return minstretDifference;
}
/* Function: start_time
@ -142,10 +155,10 @@ void minstretFunc(void)
or zeroing some system parameters - e.g. setting the cpu clocks cycles to 0.
*/
void start_time(void) {
minstretFunc();
start_instr_val = minstretFunc();
GETMYTIME(start_time_val);
ee_printf("Timer started\n");
ee_printf(" MTIME: %u\n", start_time_val);
//ee_printf("Timer started\n");
//ee_printf(" MTIME: %u\n", start_time_val);
#if CALLGRIND_RUN
CALLGRIND_START_INSTRUMENTATION
#endif
@ -167,9 +180,9 @@ void stop_time(void) {
asm volatile("int3");/*1 */
#endif
GETMYTIME(stop_time_val);
minstretFunc();
ee_printf("Timer stopped\n");
ee_printf(" MTIME: %u\n", stop_time_val);
stop_instr_val = minstretFunc();
//ee_printf("Timer stopped\n");
//ee_printf(" MTIME: %u\n", stop_time_val);
}
/* Function: get_time
Return an abstract "ticks" number that signifies time on the system.
@ -182,7 +195,8 @@ void stop_time(void) {
*/
CORE_TICKS get_time(void) {
CORE_TICKS elapsed=(CORE_TICKS)(MYTIMEDIFF(stop_time_val, start_time_val));
ee_printf(" Elapsed MTIME: %u\n", elapsed);
//ee_printf(" Elapsed MTIME: %u\n", elapsed);
//ee_printf(" Elapsed MINSTRET: %lu\n", minstretDiff());
return elapsed;
}
/* Function: time_in_secs
@ -194,7 +208,7 @@ CORE_TICKS get_time(void) {
secs_ret time_in_secs(CORE_TICKS ticks) {
secs_ret retval=((secs_ret)ticks) / (secs_ret)EE_TICKS_PER_SEC;
int retvalint = (int)retval;
ee_printf("RETURN VALUE FROM TIME IN SECS FUNCTION: %d\n", retvalint);
//ee_printf("RETURN VALUE FROM TIME IN SECS FUNCTION: %d\n", retvalint);
return retval;
}
#else