mirror of
https://github.com/tinygrad/tinygrad.git
synced 2026-04-29 03:00:14 -04:00
340 lines
11 KiB
Python
340 lines
11 KiB
Python
import numpy as np
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import unittest
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from tinygrad.function import function
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from tinygrad import Tensor
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from tinygrad.uop.ops import UOp
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class TestFunction(unittest.TestCase):
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def test_simple(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a+b
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a = Tensor([1,2,3])
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b = Tensor([4,5,6])
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np.testing.assert_equal(f(a,b).numpy(), [5,7,9])
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def test_simple_same(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a+b
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a = Tensor([1,2,3])
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np.testing.assert_equal(f(a,a).numpy(), [2,4,6])
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def test_implicit(self):
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inp = Tensor([7,8,9])
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a+b+inp
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a = Tensor([1,2,3])
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b = Tensor([4,5,6])
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np.testing.assert_equal(f(a,b).numpy(), [12,15,18])
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def test_implicit_same_as_input(self):
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inp = Tensor([7,8,9])
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a+b+inp
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a = Tensor([1,2,3])
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np.testing.assert_equal(f(a, inp).numpy(), [15,18,21])
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def test_implicit_2(self):
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inp = Tensor([7,8,9])
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@function
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def f(a:Tensor, b:Tensor) -> Tensor:
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return a+b+inp
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inp2 = Tensor([7,8,10])
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@function
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def g(a:Tensor, b:Tensor) -> Tensor:
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return a+b+inp2
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a = Tensor([1,2,3])
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b = Tensor([4,5,6])
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c = f(a,b)
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d = g(a,b)
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c.realize(d)
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np.testing.assert_equal(c.numpy(), [12,15,18])
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np.testing.assert_equal(d.numpy(), [12,15,19])
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def test_implicit_unrealized(self):
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inp = Tensor([1,2,3]) + Tensor([4,5,6])
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@function
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def f(a:Tensor) -> Tensor: return a + inp
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np.testing.assert_equal(f(Tensor([10,20,30])).numpy(), [15,27,39])
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def test_detach(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a.detach() + b
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a = Tensor([1,2,3])
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b = Tensor([4,5,6])
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np.testing.assert_equal(f(a, b).numpy(), [5,7,9])
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def test_contiguous_backward(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return (a + b).contiguous_backward()
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a = Tensor([1,2,3])
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b = Tensor([4,5,6])
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np.testing.assert_equal(f(a, b).numpy(), [5,7,9])
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def test_method(self):
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class Foo:
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def __init__(self): self.w = Tensor([10,20,30])
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@function
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def __call__(self, x:Tensor) -> Tensor: return x + self.w
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foo = Foo()
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np.testing.assert_equal(foo(Tensor([1,2,3])).numpy(), [11,22,33])
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def test_grad_gemm(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a @ b
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a = Tensor([[1.,2.],[3.,4.]], requires_grad=True)
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b = Tensor([[5.,6.],[7.,8.]], requires_grad=True)
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(f(a, b).contiguous() * b).sum().backward()
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Tensor.realize(a, b, a.grad, b.grad)
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# L = sum((a@b) * b), dL/d(a@b) = b, dL/da = b @ b^T, dL/db = a^T @ b + (a@b)
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na, nb = a.numpy(), b.numpy()
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np.testing.assert_allclose(a.grad.numpy(), nb @ nb.T)
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np.testing.assert_allclose(b.grad.numpy(), na.T @ nb + na @ nb)
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def test_grad_implicit(self):
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w = Tensor([1., 2., 3.], requires_grad=True)
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w.realize() # TODO: this is required
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@function
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def f(x:Tensor) -> Tensor: return x * w
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x = Tensor([4., 5., 6.])
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f(x).sum().backward()
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np.testing.assert_allclose(w.grad.numpy(), [4., 5., 6.])
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def test_symbolic_index(self):
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table = Tensor([10,20,30,40]).contiguous().realize()
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@function
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def f(x:Tensor, start_pos:int|UOp) -> Tensor:
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return x + table[start_pos]
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v = UOp.variable("start_pos", 0, 3)
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np.testing.assert_equal(f(Tensor([1,2,3]), v.bind(0)).numpy(), [11,12,13])
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def test_symbolic_shape_input(self):
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table = Tensor([10,20,30,40]).contiguous().realize()
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@function
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def f(x:Tensor) -> Tensor: return x * 2
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sz = UOp.variable("sz", 1, 3)
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slic = table[:sz.bind(2)]
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np.testing.assert_equal(f(slic)[:2].numpy(), [20,40])
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def test_nested_calls(self):
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w = Tensor([10., 20., 30.])
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@function
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def f(a:Tensor) -> Tensor: return a + w
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@function
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def g(a:Tensor) -> Tensor: return a * w
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a = Tensor([1., 2., 3.])
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np.testing.assert_allclose(g(f(a)).numpy(), [110., 440., 990.])
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def test_nested_calls_backward(self):
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w = Tensor([[1., 2.], [3., 4.]]).contiguous().realize()
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@function
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def inner(x:Tensor) -> Tensor: return x + w
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@function
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def outer(a:Tensor, b:Tensor) -> Tensor: return inner(a.reshape(1,2) + b.reshape(1,2))
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a = Tensor([1., 2.], requires_grad=True)
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b = Tensor([3., 4.], requires_grad=True)
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outer(a, b).sum().backward()
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np.testing.assert_allclose(a.grad.numpy(), [2., 2.])
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np.testing.assert_allclose(b.grad.numpy(), [2., 2.])
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def test_unused_param_backward(self):
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@function
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def f(a:Tensor, b:Tensor, c:Tensor) -> Tensor: return a + c # b is unused
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a = Tensor([1., 2., 3.], requires_grad=True)
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b = Tensor([4., 5., 6.], requires_grad=True)
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c = Tensor([7., 8., 9.], requires_grad=True)
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f(a, b, c).sum().backward()
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np.testing.assert_allclose(a.grad.numpy(), [1., 1., 1.])
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np.testing.assert_allclose(b.grad.numpy(), [0., 0., 0.])
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np.testing.assert_allclose(c.grad.numpy(), [1., 1., 1.])
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def test_name(self):
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@function
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def f(a:Tensor) -> Tensor: return a + 1
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assert f(Tensor([1])).uop.arg.name.endswith("f")
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def test_method_name(self):
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class Foo:
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@function
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def __call__(self, x:Tensor) -> Tensor: return x + 1
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assert Foo()(Tensor([1])).uop.arg.name.endswith("Foo.__call__")
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def test_callable_instance(self):
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class Foo:
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def __init__(self): self.w = Tensor([10,20,30])
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def __call__(self, x:Tensor) -> Tensor: return x + self.w
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foo = Foo()
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f = function(foo)
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np.testing.assert_equal(f(Tensor([1,2,3])).numpy(), [11,22,33])
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assert f(Tensor([1,2,3])).uop.arg.name.endswith("Foo")
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def test_iadd(self):
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@function
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def f(x:Tensor) -> Tensor:
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x += 1
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return x
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a = Tensor([1,2,3]).realize()
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np.testing.assert_equal(f(a).numpy(), [2,3,4])
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np.testing.assert_equal(a.numpy(), [3,4,5]) # TODO: should be [1,2,3]
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def test_implicit_assign(self):
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a = Tensor([1,2,3])
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a += 1
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c = Tensor([2,2,2]).contiguous()
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@function
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def f(b:Tensor) -> Tensor: return a+b+c
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b = Tensor([10,20,30]).realize()
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np.testing.assert_equal(f(b).numpy(), [14,25,36])
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def test_assign_input(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor:
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a.assign(b+1)
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return a
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a = Tensor([1,2,3]).realize()
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b = Tensor([10,20,30]).realize()
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np.testing.assert_equal(f(a,b).numpy(), [11,21,31])
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np.testing.assert_equal(a.numpy(), [11,21,31]) # TODO: should be [1,2,3]
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np.testing.assert_equal(b.numpy(), [10,20,30])
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@unittest.expectedFailure
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def test_assign_slice(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor:
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a[1:] = b[1:]+1
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return a
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a = Tensor([1,2,3]).realize()
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b = Tensor([10,20,30]).realize()
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np.testing.assert_equal(f(a,b).numpy(), [1,21,31])
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np.testing.assert_equal(a.numpy(), [1,2,3])
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np.testing.assert_equal(b.numpy(), [10,20,30])
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class TestFunctionMulti(unittest.TestCase):
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devices_2 = ("CPU:0", "CPU:1")
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def test_simple_multi(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a+b
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a = Tensor([1,2,3,4]).shard(self.devices_2, axis=None)
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b = Tensor([10,20,30,40]).shard(self.devices_2, axis=None)
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np.testing.assert_equal(f(a,b).numpy(), [11,22,33,44])
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def test_simple_multi_sharded(self):
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@function
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def f(a:Tensor, b:Tensor) -> Tensor: return a+b
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a = Tensor([1,2,3,4]).shard(self.devices_2, axis=0)
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b = Tensor([10,20,30,40]).shard(self.devices_2, axis=0)
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np.testing.assert_equal(f(a,b).numpy(), [11,22,33,44])
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def test_data_parallel_multi(self):
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@function
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def f(x:Tensor, w:Tensor) -> Tensor: return x @ w
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x = Tensor([[1.,2.],[3.,4.],[5.,6.],[7.,8.]]).shard(self.devices_2, axis=0)
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w = Tensor([[1.,0.],[0.,1.]]).shard(self.devices_2, axis=None)
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np.testing.assert_allclose(f(x, w).numpy(), [[1.,2.],[3.,4.],[5.,6.],[7.,8.]])
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def test_grad_implicit_multi(self):
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w = Tensor([1., 2., 3., 4.], requires_grad=True).shard(self.devices_2, axis=None)
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w.realize()
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@function
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def f(x:Tensor) -> Tensor: return x * w
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x = Tensor([4., 5., 6., 7.]).shard(self.devices_2, axis=None)
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f(x).sum().backward()
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np.testing.assert_allclose(w.grad.numpy(), [4., 5., 6., 7.])
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def test_call_axis(self):
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@function
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def f(x:Tensor, w:Tensor) -> Tensor: return x @ w
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x = Tensor([[1.,0.],[0.,1.],[1.,1.],[0.,0.]]).shard(self.devices_2, axis=0)
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w = Tensor([[1.,2.],[3.,4.]]).shard(self.devices_2, axis=None)
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result = f(x, w)
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# CALL output should inherit axis=0 from the sharded input
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self.assertEqual(result.uop.axis, 0)
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# reduce on the sharded axis should remove it
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self.assertIsNone(result.sum().uop.axis)
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def test_call_axis_shard_inside(self):
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@function
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def f(x:Tensor, w:Tensor) -> Tensor:
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return x.shard(self.devices_2, axis=0) @ w.shard(self.devices_2, axis=None)
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x = Tensor([[1.,0.],[0.,1.],[1.,1.],[0.,0.]])
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w = Tensor([[1.,2.],[3.,4.]])
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result = f(x, w)
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self.assertEqual(result.uop.axis, 0)
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np.testing.assert_allclose(result.numpy(), x.numpy() @ w.numpy())
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def test_data_parallel_backward(self):
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@function
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def f(x:Tensor, w:Tensor) -> Tensor: return x @ w
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x = Tensor([[1.,0.],[0.,1.],[1.,1.],[0.,0.]], requires_grad=True).shard(self.devices_2, axis=0)
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w = Tensor([[1.,2.],[3.,4.]], requires_grad=True).shard(self.devices_2, axis=None)
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w.realize()
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f(x, w).sum().backward()
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# d/dx = ones @ w^T = [[1,3],[1,3],[1,3],[1,3]], but sum so ones(4,2) @ w^T? no:
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# L = sum(x @ w), dL/dx = ones(4,2) @ w^T... actually dL/d(xw) = ones(4,2), dL/dx = ones(4,2) @ w^T
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np.testing.assert_allclose(x.grad.numpy(), np.ones((4,2)) @ np.array([[1,3],[2,4]]))
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def test_data_parallel_backward_4(self):
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devices_4 = tuple(f"CPU:{i}" for i in range(4))
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@function
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def f(x:Tensor, w:Tensor) -> Tensor: return x @ w
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x = Tensor(np.arange(16).reshape(8,2).astype(np.float32), requires_grad=True).shard(devices_4, axis=0)
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w = Tensor([[1.,2.],[3.,4.]], requires_grad=True).shard(devices_4, axis=None)
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w.realize()
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f(x, w).sum().backward()
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np.testing.assert_allclose(x.grad.numpy(), np.ones((8,2)) @ np.array([[1,3],[2,4]]))
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def test_data_parallel_backward_implicit(self):
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devices_4 = tuple(f"CPU:{i}" for i in range(4))
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w = Tensor([[1.,2.],[3.,4.]], requires_grad=True).shard(devices_4, axis=None)
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w.realize()
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@function
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def f(x:Tensor) -> Tensor: return x @ w
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x = Tensor(np.arange(16).reshape(8,2).astype(np.float32), requires_grad=True).shard(devices_4, axis=0)
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f(x).sum().backward()
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np.testing.assert_allclose(x.grad.numpy(), np.ones((8,2)) @ np.array([[1,3],[2,4]]))
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def test_data_parallel_backward_twice(self):
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devices_4 = tuple(f"CPU:{i}" for i in range(4))
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w = Tensor([[1.,2.],[3.,4.]], requires_grad=True).shard(devices_4, axis=None)
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w.realize()
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# pre-init grads like the training loop does
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w.grad = w.zeros_like().contiguous().realize()
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@function
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def f(x:Tensor) -> Tensor: return x @ w
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expected = np.ones((8,2)) @ np.array([[1,3],[2,4]])
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for _ in range(2):
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x = Tensor(np.arange(16).reshape(8,2).astype(np.float32), requires_grad=True).shard(devices_4, axis=0)
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f(x).sum().backward()
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np.testing.assert_allclose(x.grad.numpy(), expected)
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if __name__ == '__main__':
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unittest.main()
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