commit 76510832b863589eaf491e7555b6557a470e8fe3
parent d7784f92664ba94b5c19934fc6f585b268b8d54d
Author: Anders Damsgaard <anders@adamsgaard.dk>
Date: Tue, 12 Nov 2019 16:47:52 +0100
Add compile-time option to report performance to stdout
Diffstat:
| M | main.c | | | 18 | ++++++++++++++++++ |
1 file changed, 18 insertions(+), 0 deletions(-)
diff --git a/main.c b/main.c
@@ -3,6 +3,7 @@
#include <math.h>
#include <getopt.h>
#include <string.h>
+#include <time.h>
#include "simulation.h"
#include "fluid.h"
@@ -24,6 +25,9 @@
#define RTOL_STRESS 1e-3
#define MAX_ITER_STRESS 20000
+/* uncomment to print time spent per time step to stdout */
+/*#define BENCHMARK_PERFORMANCE*/
+
static void
usage(void)
{
@@ -139,6 +143,10 @@ main(int argc, char* argv[])
const char* optstring;
unsigned long iter, stressiter;
double new_phi, new_k, filetimeclock, res_norm, mu_wall_orig;
+#ifdef BENCHMARK_PERFORMANCE
+ clock_t t_begin, t_end;
+ double t_elapsed;
+#endif
/* load with default values */
sim = init_sim();
@@ -345,6 +353,10 @@ main(int argc, char* argv[])
res_norm = NAN;
while (sim.t <= sim.t_end) {
+#ifdef BENCHMARK_PERFORMANCE
+ t_begin = clock();
+#endif
+
stressiter = 0;
do {
if (sim.fluid) {
@@ -390,6 +402,12 @@ main(int argc, char* argv[])
} while ((!isnan(sim.v_x_fix) || !isnan(sim.v_x_limit))
&& fabs(res_norm) > RTOL_STRESS);
+#ifdef BENCHMARK_PERFORMANCE
+ t_end = clock();
+ t_elapsed = (double)(t_end - t_begin)/CLOCKS_PER_SEC;
+ printf("time spent per time step = %g s\n", t_elapsed);
+#endif
+
if (!isnan(sim.v_x_limit))
sim.mu_wall = mu_wall_orig;
sim.t += sim.dt;
