Add openpilot tests

tinygrad_repo/test/external/external_copy_benchmark.py

@@ -0,0 +1,27 @@
+import unittest
+from tinygrad.helpers import prod
+from tinygrad.ops import Device
+from tinygrad.tensor import Tensor
+from tinygrad.helpers import GlobalCounters
+from tinygrad.jit import CacheCollector
+
+class TestCopy(unittest.TestCase):
+  def test_add1(self):
+    pts = []
+    for i in range(16384, 16384*256, 16384):
+      t = Tensor.randn(i).realize()
+      CacheCollector.start()
+      t.assign(t+1).realize()
+      fxn, args, _ = CacheCollector.finish()[0]
+      GlobalCounters.reset()
+      def run(): return fxn(args, force_wait=True)
+      ct = min([run() for _ in range(10)])
+      mb = prod(t.shape)*t.dtype.itemsize*2*1e-6
+      print(f"{mb*1e3:.2f} kB, {ct*1e3:.2f} ms, {mb/ct:.2f} MB/s")
+      pts.append((mb, mb/ct))
+    from matplotlib import pyplot as plt
+    plt.plot([x[0] for x in pts], [x[1] for x in pts])
+    plt.show()
+
+if __name__ == '__main__':
+  unittest.main()