mirror of
https://github.com/tinygrad/tinygrad.git
synced 2026-06-11 23:46:02 +08:00
195 lines
9.7 KiB
Python
195 lines
9.7 KiB
Python
import unittest, math, torch
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import numpy as np
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from functools import partial
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from tinygrad import nn, dtypes, Tensor, Device, TinyJit, Variable
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from tinygrad.helpers import OSX
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# https://gist.github.com/devries/11405101
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def ksprob(a):
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fac, total, termbf = 2.0, 0.0, 0.0
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a2 = -2.0 * a * a
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for j in range(1, 101):
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term = fac * math.exp(a2 * j * j)
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total += term
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if math.fabs(term) <= 0.001 * termbf or math.fabs(term) <= 1e-8 * total:
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return total
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fac = -fac
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termbf = math.fabs(term)
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return 1.0
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def kstest(l1, l2):
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n1, n2 = len(l1), len(l2)
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l1.sort()
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l2.sort()
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j1, j2, d, fn1, fn2 = 0, 0, 0.0, 0.0, 0.0
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while j1 < n1 and j2 < n2:
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d1, d2 = l1[j1], l2[j2]
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if d1 <= d2:
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fn1 = (float(j1) + 1.0) / float(n1)
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j1 += 1
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if d2 <= d1:
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fn2 = (float(j2) + 1.0) / float(n2)
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j2 += 1
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dtemp = math.fabs(fn2 - fn1)
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if dtemp > d:
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d = dtemp
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ne = float(n1 * n2) / float(n1 + n2)
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nesq = math.sqrt(ne)
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prob = ksprob((nesq + 0.12 + 0.11 / nesq) * d)
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return prob
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def equal_distribution(tiny_func, torch_func=None, numpy_func=None, shape=(40, 43), alpha=0.04):
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Tensor.manual_seed(1337)
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torch.manual_seed(1337)
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np.random.seed(1337)
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assert not (torch_func is None and numpy_func is None), "no function to compare with"
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x1 = tiny_func(*shape).numpy().flatten()
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x2 = tiny_func(shape).numpy().flatten()
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if numpy_func is not None: y = numpy_func(shape).flatten()
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if torch_func is not None: z = torch_func(shape).numpy().flatten()
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return (numpy_func is None or (kstest(x1, y) >= alpha and kstest(x2, y) >= alpha)) and \
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(torch_func is None or (kstest(x1, z) >= alpha and kstest(x2, z) >= alpha))
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def normal_test(func, shape=(20, 45), alpha=0.05): return equal_distribution(func, numpy_func=lambda x: np.random.randn(*x), shape=shape, alpha=alpha)
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class TestRandomness(unittest.TestCase):
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def test_randn(self):
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self.assertEqual(Tensor.randn(3,3,dtype=dtypes.half).dtype, dtypes.half)
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self.assertTrue(normal_test(Tensor.randn))
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self.assertTrue(equal_distribution(Tensor.randn, torch.randn, lambda x: np.random.randn(*x)))
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def test_randint(self):
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self.assertFalse(normal_test(Tensor.randint))
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self.assertTrue(equal_distribution(partial(Tensor.randint, low=-2, high=5),
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numpy_func=lambda x: np.random.randint(low=-2, high=5, size=x)))
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self.assertTrue(equal_distribution(partial(Tensor.randint, low=-2, high=5, dtype="int32"),
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numpy_func=lambda x: np.random.randint(low=-2, high=5, size=x)))
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self.assertTrue(Tensor.randint(1, device="CPU").device=="CPU")
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# check types of args
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with self.assertRaises(TypeError): Tensor.randint((3, 4), low=0.1, high=3)
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with self.assertRaises(TypeError): Tensor.randint((3, 4), low=0, high=3.5)
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with self.assertRaises(TypeError): Tensor.randint((3, 4), low=1, high=3, dtype="float")
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with self.assertRaises(TypeError): Tensor.randint((3, 4), low=0, high=3, dtype=dtypes.float32)
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# check low < high
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with self.assertRaises(ValueError): Tensor.randint((3, 4), low=10, high=5)
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with self.assertRaises(ValueError): Tensor.randint((3, 4), low=10, high=10)
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np.testing.assert_array_equal(Tensor.randint(16, low=5, high=6).numpy(), 5)
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def test_normal(self):
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self.assertTrue(normal_test(Tensor.normal))
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self.assertTrue(equal_distribution(Tensor.normal, lambda x: torch.nn.init.normal_(torch.empty(x), mean=0, std=1),
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lambda x: np.random.normal(loc=0, scale=1, size=x)))
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# check std >= 0
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with self.assertRaises(ValueError): Tensor.normal((3, 4), mean=0, std=-1)
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def test_uniform(self):
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self.assertFalse(normal_test(Tensor.uniform))
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self.assertTrue(equal_distribution(Tensor.uniform, lambda x: torch.nn.init.uniform_(torch.empty(x)), lambda x: np.random.uniform(size=x)))
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self.assertTrue(equal_distribution(partial(Tensor.uniform, low=-100, high=100, dtype=dtypes.int32),
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numpy_func=lambda x: np.random.randint(low=-100, high=100, size=x)))
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# check low < high
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with self.assertRaises(ValueError): Tensor.uniform((3, 4), low=5.0, high=3.0)
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with self.assertRaises(ValueError): Tensor.uniform((3, 4), low=1.0, high=1.0)
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def test_scaled_uniform(self):
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self.assertFalse(normal_test(Tensor.scaled_uniform))
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self.assertTrue(equal_distribution(Tensor.scaled_uniform, lambda x: torch.nn.init.uniform_(torch.empty(x), a=-1, b=1) / math.sqrt(math.prod(x)),
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lambda x: np.random.uniform(-1, 1, size=x) / math.sqrt(math.prod(x))))
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def test_glorot_uniform(self):
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self.assertFalse(normal_test(Tensor.glorot_uniform))
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self.assertTrue(equal_distribution(Tensor.glorot_uniform, lambda x: torch.nn.init.xavier_uniform_(torch.empty(x)),
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lambda x: np.random.uniform(-1, 1, size=x) * math.sqrt(6 / (x[0] + math.prod(x[1:])))))
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def test_kaiming_uniform(self):
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for shape in [(32, 16, 3, 3), (20, 44), (5, 15, 35)]:
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self.assertTrue(equal_distribution(Tensor.kaiming_uniform, lambda x: torch.nn.init.kaiming_uniform_(torch.empty(x)), shape=shape))
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def test_kaiming_normal(self):
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for shape in [(32, 16, 3, 3), (20, 44), (3, 15, 35)]:
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self.assertTrue(equal_distribution(Tensor.kaiming_normal, lambda x: torch.nn.init.kaiming_normal_(torch.empty(x)), shape=shape))
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def test_multinomial(self):
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self.assertRaises(AssertionError, lambda: Tensor(2).multinomial(1, replacement=False))
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self.assertRaises(AssertionError, lambda: Tensor([1, 9]).multinomial(0, replacement=False))
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def _check_with_torch(w, num_samples, replacement):
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tiny_res = Tensor(w).multinomial(num_samples, replacement=replacement)
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torch_res = torch.tensor(w).multinomial(num_samples, replacement=replacement)
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self.assertEqual(tiny_res.shape, torch_res.shape)
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if torch_res.ndim == 1:
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tiny_res = tiny_res.unsqueeze(0)
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torch_res = torch_res.unsqueeze(0)
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for i in range(torch_res.shape[0]):
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self.assertTrue(equal_distribution(lambda *_: tiny_res[i], lambda _: torch_res[i]))
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_check_with_torch(w=[0.231, 0., 1., 0.5], num_samples=300, replacement=True)
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_check_with_torch(w=[[0.2, 0.8]], num_samples=300, replacement=True) # 2D but only 1 row
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_check_with_torch(w=[[0.453, 0., 1., 0.81], [0.1, 0.8, 0., 0.1]], num_samples=300, replacement=True)
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# no-replacement
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w = [0.1, 0.9]
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self.assertRaises(AssertionError, lambda: Tensor(w).multinomial(100, replacement=False))
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@TinyJit
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def sample_one(): return Tensor(w).multinomial(1, replacement=False).realize()
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tiny_samples = [sample_one().item() for _ in range(400)]
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torch_samples = [torch.tensor(w).multinomial(1, replacement=False).item() for _ in range(400)]
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self.assertTrue(equal_distribution(lambda *_: Tensor(tiny_samples), lambda _: torch.tensor(torch_samples)))
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w = list(range(32))
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s1 = Tensor(w).multinomial(5, replacement=False).numpy()
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self.assertEqual(len(set(s1.tolist())), 5)
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s2 = Tensor(w).multinomial(5, replacement=False).numpy()
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self.assertFalse(np.array_equal(s1, s2))
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full = Tensor(w).multinomial(len(w), replacement=False).numpy()
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self.assertEqual(sorted(full.tolist()), w)
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w = [0.1, 0.2, 0.3, 0.4]
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@TinyJit
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def sample_three(): return Tensor(w).multinomial(3, replacement=False).realize()
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tiny_draws = np.array([sample_three().numpy() for _ in range(400)])
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torch_draws = np.array([torch.tensor(w).multinomial(3, replacement=False).numpy() for _ in range(400)])
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for pos in range(3):
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self.assertTrue(equal_distribution(lambda *_: Tensor(tiny_draws[:, pos]), lambda _: torch.tensor(torch_draws[:, pos])))
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@unittest.skip("this test is flaky")
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def test_multinomial_counterexample(self):
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tiny_res = Tensor([0.3, 0.6, 0.1]).multinomial(4000, replacement=True)
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torch_res = torch.tensor([0.3, 0.6, 0.1]).multinomial(4000, replacement=True)
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self.assertTrue(equal_distribution(lambda *_: tiny_res, lambda _: torch_res))
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torch_res = torch.tensor([0.2, 0.7, 0.1]).multinomial(4000, replacement=True)
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self.assertFalse(equal_distribution(lambda *_: tiny_res, lambda _: torch_res))
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def test_conv2d_init(self):
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params = (128, 256, (3,3))
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assert equal_distribution(lambda *_: nn.Conv2d(*params).weight, lambda _: torch.nn.Conv2d(*params).weight.detach())
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assert equal_distribution(lambda *_: nn.Conv2d(*params).bias, lambda _: torch.nn.Conv2d(*params).bias.detach())
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def test_linear_init(self):
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params = (64, 256)
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assert equal_distribution(lambda *_: nn.Linear(*params).weight, lambda _: torch.nn.Linear(*params).weight.detach())
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assert equal_distribution(lambda *_: nn.Linear(*params).bias, lambda _: torch.nn.Linear(*params).bias.detach())
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def test_bn_init(self):
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params = (64,)
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assert equal_distribution(lambda *_: nn.BatchNorm2d(*params).weight, lambda _: torch.nn.BatchNorm2d(*params).weight.detach())
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assert equal_distribution(lambda *_: nn.BatchNorm2d(*params).bias, lambda _: torch.nn.BatchNorm2d(*params).bias.detach())
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# TODO: still fails with MAX_KERNEL_BUFFERS
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@unittest.skipIf(Device.DEFAULT == "WEBGPU" and not OSX, "WEBGPU Vulkan can only run kernels with up to 10 buffers")
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class TestSample(unittest.TestCase):
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def test_sample(self):
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X = Tensor.rand(1000, 50).realize()
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BS = 16
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idxs = np.random.randint(0, X.shape[0], size=(BS))
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# this uncovered a bug with arg sort order
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batch = [Variable(f'idx{i}', 0, X.shape[0]-1).bind(s) for i,s in enumerate(idxs.tolist())]
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x = Tensor.cat(*[X.shrink(((batch[i], batch[i]+1), None)) for i in range(BS)])
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print(idxs)
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ret = x.numpy()
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base = X.numpy()[idxs]
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np.testing.assert_equal(ret, base)
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if __name__ == "__main__":
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unittest.main()
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