wip

2024-04-27 03:27:27 -05:00
parent 886a019ad5
commit c22b4866eb
55 changed files with 49557 additions and 116523 deletions
--- a/selfdrive/modeld/tests/dmon_lag/repro.cc
+++ b/selfdrive/modeld/tests/dmon_lag/repro.cc
@@ -0,0 +1,101 @@
+// clang++ -O2 repro.cc && ./a.out
+
+#include <sched.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+
+static inline double millis_since_boot() {
+  struct timespec t;
+  clock_gettime(CLOCK_BOOTTIME, &t);
+  return t.tv_sec * 1000.0 + t.tv_nsec * 1e-6;
+}
+
+#define MODEL_WIDTH 320
+#define MODEL_HEIGHT 640
+
+// null function still breaks it
+#define input_lambda(x) x
+
+// this is copied from models/dmonitoring.cc, and is the code that triggers the issue
+void inner(uint8_t *resized_buf, float *net_input_buf) {
+  int resized_width = MODEL_WIDTH;
+  int resized_height = MODEL_HEIGHT;
+
+  // one shot conversion, O(n) anyway
+  // yuvframe2tensor, normalize
+  for (int r = 0; r < MODEL_HEIGHT/2; r++) {
+    for (int c = 0; c < MODEL_WIDTH/2; c++) {
+      // Y_ul
+      net_input_buf[(c*MODEL_HEIGHT/2) + r] = input_lambda(resized_buf[(2*r*resized_width) + (2*c)]);
+      // Y_ur
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (2*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(2*r*resized_width) + (2*c+1)]);
+      // Y_dl
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + ((MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(2*r*resized_width+1) + (2*c)]);
+      // Y_dr
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (3*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(2*r*resized_width+1) + (2*c+1)]);
+      // U
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (4*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(resized_width*resized_height) + (r*resized_width/2) + c]);
+      // V
+      net_input_buf[(c*MODEL_HEIGHT/2) + r + (5*(MODEL_WIDTH/2)*(MODEL_HEIGHT/2))] = input_lambda(resized_buf[(resized_width*resized_height) + ((resized_width/2)*(resized_height/2)) + (r*resized_width/2) + c]);
+    }
+  }
+}
+
+float trial() {
+  int resized_width = MODEL_WIDTH;
+  int resized_height = MODEL_HEIGHT;
+
+  int yuv_buf_len = (MODEL_WIDTH/2) * (MODEL_HEIGHT/2) * 6; // Y|u|v -> y|y|y|y|u|v
+
+  // allocate the buffers
+  uint8_t *resized_buf = (uint8_t*)malloc(resized_width*resized_height*3/2);
+  float *net_input_buf = (float*)malloc(yuv_buf_len*sizeof(float));
+  printf("allocate -- %p 0x%x -- %p 0x%lx\n", resized_buf, resized_width*resized_height*3/2, net_input_buf, yuv_buf_len*sizeof(float));
+
+  // test for bad buffers
+  static int CNT = 20;
+  float avg = 0.0;
+  for (int i = 0; i < CNT; i++) {
+    double s4 = millis_since_boot();
+    inner(resized_buf, net_input_buf);
+    double s5 = millis_since_boot();
+    avg += s5-s4;
+  }
+  avg /= CNT;
+
+  // once it's bad, it's reliably bad
+  if (avg > 10) {
+    printf("HIT %f\n", avg);
+    printf("BAD\n");
+
+    for (int i = 0; i < 200; i++) {
+      double s4 = millis_since_boot();
+      inner(resized_buf, net_input_buf);
+      double s5 = millis_since_boot();
+      printf("%.2f   ", s5-s4);
+    }
+    printf("\n");
+
+    exit(0);
+  }
+
+  // don't free so we get a different buffer each time
+  //free(resized_buf);
+  //free(net_input_buf);
+
+  return avg;
+}
+
+int main() {
+  while (true) {
+    float ret = trial();
+    printf("got %f\n", ret);
+  }
+}
+