[v1.01] Remove useless frequency measurement (SSE and novector should report the same frequency!). Increase iterations to improve precision

Makefile

@@ -19,7 +19,7 @@ ifneq ($(OS),Windows_NT)
 
                 os := $(shell uname -s)
                 ifeq ($(os), Linux)
-			SOURCE += $(SRC_DIR)freq/freq.c freq_nov.o freq_sse.o freq_avx.o freq_avx512.o
+			SOURCE += $(SRC_DIR)freq/freq.c freq_nov.o freq_avx.o freq_avx512.o
 			HEADERS += $(SRC_DIR)freq/freq.h
 			CFLAGS += -pthread
                 endif
@@ -73,9 +73,6 @@ strict: $(OUTPUT)
 freq_nov.o: Makefile $(SRC_DIR)freq/freq_nov.c $(SRC_DIR)freq/freq_nov.h
 	$(CC) $(CFLAGS) $(SANITY_FLAGS) -c -pthread $(SRC_DIR)freq/freq_nov.c -o $@
 
-freq_sse.o: Makefile $(SRC_DIR)freq/freq_sse.c $(SRC_DIR)freq/freq_sse.h
-	$(CC) $(CFLAGS) $(SANITY_FLAGS) -c -msse -pthread $(SRC_DIR)freq/freq_sse.c -o $@
-
 freq_avx.o: Makefile $(SRC_DIR)freq/freq_avx.c $(SRC_DIR)freq/freq_avx.h
 	$(CC) $(CFLAGS) $(SANITY_FLAGS) -c -mavx -mfma -pthread $(SRC_DIR)freq/freq_avx.c -o $@
 

src/common/main.c

@@ -33,7 +33,7 @@
   static const char* OS_STR = "Unknown OS";
 #endif
 
-static const char* VERSION = "1.00";
+static const char* VERSION = "1.01";
 
 void print_help(char *argv[]) {
   const char **t = args_str;

src/x86/freq/freq.c

@@ -5,7 +5,6 @@
 #include "../uarch.h"
 #include "freq.h"
 #include "freq_nov.h"
-#include "freq_sse.h"
 #include "freq_avx.h"
 #include "freq_avx512.h"
 
@@ -102,11 +101,6 @@ int64_t measure_frequency(struct cpuInfo* cpu) {
     compute_function = compute_avx;
     num_spaces = 42;
   }
-  else if(cpu->feat->SSE) {
-    printf("cpufetch is measuring the SSE frequency...");
-    compute_function = compute_sse;
-    num_spaces = 42;
-  }
   else {
     printf("cpufetch is measuring the frequency (no vector instructions)...");
     compute_function = compute_nov;

src/x86/freq/freq.h

@@ -5,7 +5,7 @@
 #include "../../common/cpu.h"
 
 #define MEASURE_TIME_SECONDS         5
-#define LOOP_ITERS           100000000
+#define LOOP_ITERS          1000000000
 
 int64_t measure_frequency(struct cpuInfo* cpu);
 

src/x86/freq/freq_sse.c

@@ -1,44 +0,0 @@
-#include <stdio.h>
-#include <immintrin.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <sys/time.h>
-#include <time.h>
-#include <errno.h>
-#include <string.h>
-#include <pthread.h>
-#include <stdint.h>
-#include "freq.h"
-
-void* compute_sse() {
-  bool end = false;
-
-  struct timeval begin, now;
-
-  __m128 a = _mm_set1_ps(1.5);
-  __m128 b = _mm_set1_ps(1.2);
-  __m128 c = _mm_set1_ps(0.0);
-
-  gettimeofday(&begin, NULL);
-  while(!end) {
-    for(uint64_t i=0; i < LOOP_ITERS; i++) {
-      c = _mm_add_ps(a, b);
-    }
-
-    gettimeofday(&now, NULL);
-    double elapsed = (now.tv_sec - begin.tv_sec) + ((now.tv_usec - begin.tv_usec)/1000000.0);
-    end = elapsed >= (double) MEASURE_TIME_SECONDS;
-  }
-
-  FILE* fp = fopen("/dev/null", "w");
-  if(fp == NULL) {
-    printf("fopen: %s", strerror(errno));
-  }
-  else {
-    fprintf(fp, "%f", c[0]);
-    fclose(fp);
-  }
-
-  return NULL;
-}
-

src/x86/freq/freq_sse.h

@@ -1,6 +0,0 @@
-#ifndef __FREQ_SSE__
-#define __FREQ_SSE__
-
-void* compute_sse();
-
-#endif