parallel meanshift

meanshift.c

@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+#include "serial_declarations.h"
+
+int NUMBER_OF_POINTS = 600;
+int DIMENSIONS = 2;
+char* POINTS_FILENAME = "data/X.bin";
+char* LABELS_FILENAME = "data/L.bin";
+
+struct timeval startwtime, endwtime;
+double seq_time;
+
+int main(int argc, char **argv){
+    int h = 1;
+
+    //get_args(argc, argv, &h); commented out while in development
+
+    FILE *f;
+//    f = fopen(X, "rb");
+//    fseek(f, 0L, SEEK_END);
+//    long int pos = ftell(f);
+//    fclose(f);
+//    int elements = pos / sizeof(double);  // number of total elements (points*dimension)
+//    int points = elements/DIMENSIONS;
+//    //printf("points : %d \n", points);
+    f = fopen(POINTS_FILENAME, "rb");
+    double **vectors;
+    vectors = alloc_2d_double(NUMBER_OF_POINTS, DIMENSIONS);
+    for (int i=0; i<NUMBER_OF_POINTS; i++){
+        int out = fread(vectors[i], sizeof(double), DIMENSIONS, f);
+    }
+
+    save_matrix(vectors, 0);
+
+    // initializing file that will contain the labels (train)
+    f = fopen(LABELS_FILENAME, "rb");
+    // NOTE : Labels were classified as <class 'numpy.uint8'>
+    // variables of type uint8 are stored as 1-byte (8-bit) unsigned integers
+    fseek(f, 0L, SEEK_END);
+    long int pos = ftell(f);
+    rewind(f);
+    //printf("position : %ld \n", pos);
+    int label_elements = pos/ sizeof(char);
+    char *labels = (char*)malloc(label_elements* sizeof(char));
+    fseek(f, 0L, SEEK_SET);
+    int out = fread(labels, sizeof(char), label_elements, f);
+    fclose(f);
+
+    // MEAN SHIFT OPTIONS
+    parameters params;
+    params.epsilon = 0.0001;
+    params.verbose = false;
+    params.display = false;
+    parameters *opt;
+    opt = &params;
+
+    double **shifted_points;
+    // tic
+    gettimeofday (&startwtime, NULL);
+
+    int iterations = meanshift(vectors, &shifted_points, h, opt, 1);
+
+    // toc
+    gettimeofday (&endwtime, NULL);
+    seq_time = (double)((endwtime.tv_usec - startwtime.tv_usec)/1.0e6 + endwtime.tv_sec - startwtime.tv_sec);
+    printf("%s wall clock time = %f\n","Mean Shift", seq_time);
+
+    //TODO write output points to file -> plot later
+    //save_matrix(shifted_points, iterations);
+}