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52 lines
1.8 KiB
52 lines
1.8 KiB
1 month ago
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import unittest
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from tinygrad import Device, dtypes, Tensor
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from tinygrad.device import Buffer
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from tinygrad.ops import view_supported_devices
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@unittest.skipIf(Device.DEFAULT not in view_supported_devices, "subbuffer not supported")
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class TestSubBuffer(unittest.TestCase):
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def setUp(self):
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self.buf = Buffer(Device.DEFAULT, 10, dtypes.uint8).ensure_allocated()
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self.buf.copyin(memoryview(bytearray(range(10))))
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def test_subbuffer(self):
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vbuf = self.buf.view(2, dtypes.uint8, offset=3).ensure_allocated()
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tst = vbuf.as_buffer().tolist()
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assert tst == [3, 4]
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def test_subbuffer_cast(self):
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# NOTE: bitcast depends on endianness
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vbuf = self.buf.view(2, dtypes.uint16, offset=3).ensure_allocated()
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tst = vbuf.as_buffer().cast("H").tolist()
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assert tst == [3|(4<<8), 5|(6<<8)]
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def test_subbuffer_double(self):
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vbuf = self.buf.view(4, dtypes.uint8, offset=3).ensure_allocated()
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vvbuf = vbuf.view(2, dtypes.uint8, offset=1).ensure_allocated()
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tst = vvbuf.as_buffer().tolist()
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assert tst == [4, 5]
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def test_subbuffer_len(self):
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vbuf = self.buf.view(5, dtypes.uint8, 2).ensure_allocated()
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mv = vbuf.as_buffer()
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assert len(mv) == 5
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mv = vbuf.as_buffer(allow_zero_copy=True)
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assert len(mv) == 5
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def test_subbuffer_used(self):
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t = Tensor.arange(0, 10, dtype=dtypes.uint8).realize()
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# TODO: why does it needs contiguous
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vt = t[2:4].contiguous().realize()
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out = (vt + 100).tolist()
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assert out == [102, 103]
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@unittest.skipIf(Device.DEFAULT not in {"CUDA", "NV", "AMD"}, "only NV, AMD, CUDA")
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def test_subbuffer_transfer(self):
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t = Tensor.arange(0, 10, dtype=dtypes.uint8).realize()
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vt = t[2:5].contiguous().realize()
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out = vt.to(f"{Device.DEFAULT}:1").realize().tolist()
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assert out == [2, 3, 4]
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if __name__ == '__main__':
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unittest.main()
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