use omp for init-kmeans, increase default set size (kmeans-c4-1e5 real: ~20s)

2 files changed, 2 insertions, 1 deletions

diff --git a/src/km-init-kmeans.c b/src/km-init-kmeans.c
index f0c1b5f..b2a24af 100644
--- a/src/km-init-kmeans.c
+++ b/src/km-init-kmeans.c
@@ -13,6 +13,7 @@ sum_distance_squared(
   float r = 0;
 
   // sum squared distances
+  #pragma omp parallel for reduction(+:r)
   for (size_t i = 0; i < set->num_rows; i++) {
     const float * const vals = km_set_get_row(set, i);
     r += distance_squared(set->shape.num_floats, floats, vals);
diff --git a/src/main.c b/src/main.c
index bc8c1f1..386af16 100644
--- a/src/main.c
+++ b/src/main.c
@@ -92,7 +92,7 @@ load_on_shape(
   // D("shape: %zu floats, %zu ints", shape->num_floats, shape->num_ints);
 
   // init set
-  if (!km_set_init(set, shape, 100)) {
+  if (!km_set_init(set, shape, 1000)) {
     die("km_set_init() failed");
   }