88 lines
3.0 KiB
Python
88 lines
3.0 KiB
Python
import unittest
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import torch
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from utils import precision
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from sglang.test.test_utils import CustomTestCase
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torch.manual_seed(1234)
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def fix_query_key_value_ordering_reshape_cat(
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mixed_qkvz, mixed_ba, num_k_heads, num_v_heads, attn_tp_size, head_k_dim, head_v_dim
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):
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new_tensor_shape_qkvz = mixed_qkvz.size()[:-1] + (
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num_k_heads // attn_tp_size,
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(
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head_k_dim
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+ head_k_dim
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+ (head_v_dim + head_v_dim) * num_v_heads // num_k_heads
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),
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)
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new_tensor_shape_ba = mixed_ba.size()[:-1] + (
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num_k_heads // attn_tp_size,
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2 * num_v_heads // num_k_heads,
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)
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mixed_qkvz = mixed_qkvz.view(*new_tensor_shape_qkvz)
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mixed_ba = mixed_ba.view(*new_tensor_shape_ba)
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split_arg_list_qkvz = [
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head_k_dim,
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head_k_dim,
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(num_v_heads // num_k_heads * head_v_dim),
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(num_v_heads // num_k_heads * head_v_dim),
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]
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split_arg_list_ba = [
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num_v_heads // num_k_heads,
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num_v_heads // num_k_heads,
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]
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# [b, sq, ng, (hn + hn + np/ng * hn + np/ng + np/ng)]
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# --> [b, sq, ng, hn], [b, sq, ng, hn], [b, sq, ng, np/ng * hn], [b, sq, ng, np/ng * hn], [b, sq, ng, np/ng], [b, sq, ng, np/ng]
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query, key, value, z = torch.split(mixed_qkvz, split_arg_list_qkvz, dim=2)
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b, a = torch.split(mixed_ba, split_arg_list_ba, dim=2)
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# [b, sq, ng, np/ng * hn] -> [b, sq, np, hn]
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value = value.reshape(value.size(0), -1, head_v_dim)
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z = z.reshape(z.size(0), -1, head_v_dim)
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b = b.reshape(b.size(0), num_v_heads // attn_tp_size)
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a = a.reshape(a.size(0), num_v_heads // attn_tp_size)
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query, key, value = map(lambda x: x.reshape(x.shape[0], -1), (query, key, value))
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mixed_qkv = torch.cat((query, key, value), dim=-1)
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return mixed_qkv, z, b, a
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class TestQwen3(CustomTestCase):
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def test_fused_qkvzba_split_reshape_cat(self):
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mixed_qkvz = torch.rand(1024, 12288, dtype=torch.bfloat16)
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mixed_ba = torch.rand(1024, 64, dtype=torch.bfloat16)
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head_k_dim = 128
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head_v_dim = 128
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num_v_heads = 32
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num_k_heads = 16
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attn_tp_size = 1
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mixed_qkv_ref, z_ref, b_ref, a_ref = fix_query_key_value_ordering_reshape_cat(
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mixed_qkvz,
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mixed_ba,
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num_k_heads,
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num_v_heads,
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attn_tp_size,
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head_k_dim,
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head_v_dim,
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)
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num_heads_qk = num_k_heads // attn_tp_size
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num_heads_v = num_v_heads // attn_tp_size
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mixed_qkv, z, b, a = torch.ops.sgl_kernel.fused_qkvzba_split_reshape_cat_cpu(
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mixed_qkvz, mixed_ba, num_heads_qk, num_heads_v, head_k_dim, head_v_dim
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)
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atol = rtol = precision[mixed_qkv.dtype]
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torch.testing.assert_close(mixed_qkv, mixed_qkv_ref, atol=atol, rtol=rtol)
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torch.testing.assert_close(z, z_ref, atol=atol, rtol=rtol)
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torch.testing.assert_close(b, b_ref, atol=atol, rtol=rtol)
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torch.testing.assert_close(a, a_ref, atol=atol, rtol=rtol)
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if __name__ == "__main__":
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unittest.main()
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