328 lines
10 KiB
Python
328 lines
10 KiB
Python
import unittest
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from typing import Optional
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import sgl_kernel # noqa: F401
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import torch
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import torch.nn.functional as F
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from utils import parametrize, precision
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from sglang.test.test_utils import CustomTestCase
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causal_conv1d_weight_pack = torch.ops.sgl_kernel.causal_conv1d_weight_pack
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causal_conv1d_fwd = torch.ops.sgl_kernel.causal_conv1d_fwd_cpu
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causal_conv1d_update = torch.ops.sgl_kernel.causal_conv1d_update_cpu
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torch.manual_seed(1234)
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PAD_SLOT_ID = -1
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def causal_conv1d_ref(
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x: torch.Tensor,
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weight: torch.Tensor,
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bias: Optional[torch.Tensor] = None,
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initial_states: Optional[torch.Tensor] = None,
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return_final_states: bool = False,
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final_states_out: Optional[torch.Tensor] = None,
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activation: Optional[str] = "silu",
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):
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"""
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x: (batch, dim, seqlen)
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weight: (dim, width)
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bias: (dim,)
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initial_states: (batch, dim, width - 1)
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final_states_out: (batch, dim, width - 1)
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out: (batch, dim, seqlen)
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"""
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if activation not in [None, "silu", "swish"]:
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raise NotImplementedError("activation must be None, silu, or swish")
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dtype_in = x.dtype
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x = x.to(weight.dtype)
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seqlen = x.shape[-1]
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dim, width = weight.shape
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if initial_states is None:
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out = F.conv1d(x, weight.unsqueeze(1), bias, padding=width - 1, groups=dim)
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else:
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x = torch.cat([initial_states, x], dim=-1)
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out = F.conv1d(x, weight.unsqueeze(1), bias, padding=0, groups=dim)
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out = out[..., :seqlen]
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if return_final_states:
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final_states = F.pad(x, (width - 1 - x.shape[-1], 0)).to(
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dtype_in
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) # (batch, dim, width - 1)
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if final_states_out is not None:
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final_states_out.copy_(final_states)
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else:
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final_states_out = final_states
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out = (out if activation is None else F.silu(out)).to(dtype=dtype_in)
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return (out, None) if not return_final_states else (out, final_states_out)
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def causal_conv1d_update_ref(
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x, conv_state, weight, bias=None, activation=None, cache_seqlens=None
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):
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"""
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x: (batch, dim) or (batch, dim, seqlen)
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conv_state: (batch, dim, state_len), where state_len >= width - 1
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weight: (dim, width)
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bias: (dim,)
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cache_seqlens: (batch,), dtype int32.
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If not None, the conv_state is treated as a circular buffer.
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The conv_state will be updated by copying x to the
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conv_state starting at the index
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@cache_seqlens % state_len before performing the convolution.
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out: (batch, dim) or (batch, dim, seqlen)
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"""
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if activation not in [None, "silu", "swish"]:
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raise NotImplementedError("activation must be None, silu, or swish")
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x = x.unsqueeze(-1)
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batch, dim, seqlen = x.shape
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width = weight.shape[1]
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state_len = conv_state.shape[-1]
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x_new = torch.cat([conv_state, x], dim=-1)
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conv_state.copy_(x_new[:, :, -state_len:])
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out = F.conv1d(x_new, weight.unsqueeze(1), bias, padding=0, groups=dim)[
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:, :, -seqlen:
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]
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out = out.squeeze(-1)
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return out if activation is None else F.silu(out)
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class TestCausalConv1d(CustomTestCase):
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activation = "silu"
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@parametrize(
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batch=[1, 1024],
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dim=[96, 512],
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seqlen=[2, 36],
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width=[4],
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has_bias=[True, False],
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has_initial_state=[True, False],
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)
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def test_causal_conv1d(
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self,
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batch,
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dim,
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seqlen,
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width,
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has_bias,
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has_initial_state,
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dtype=torch.bfloat16,
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prepack=True,
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):
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x = torch.randn(batch, seqlen, dim).to(dtype).transpose_(-1, -2)
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weight = torch.randn(dim, width).to(dtype)
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bias = torch.randn(dim).to(dtype) if has_bias else None
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if has_initial_state:
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initial_states = torch.randn(batch, dim, width - 1, dtype=dtype)
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has_initial_state_tensor = torch.ones(batch, dtype=torch.bool)
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else:
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initial_states = None
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has_initial_state_tensor = None
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packed_weight = causal_conv1d_weight_pack(weight) if prepack else weight
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out_ref, final_states_ref = causal_conv1d_ref(
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x,
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weight,
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bias,
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initial_states,
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return_final_states=has_initial_state,
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activation=self.activation,
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)
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out = causal_conv1d_fwd(
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x,
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packed_weight,
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bias,
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initial_states,
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None,
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None,
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has_initial_state_tensor,
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self.activation in ["silu"],
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PAD_SLOT_ID,
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prepack,
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)
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atol = rtol = precision[dtype]
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torch.testing.assert_close(out_ref, out, atol=atol, rtol=rtol)
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torch.testing.assert_close(
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final_states_ref, initial_states, atol=atol, rtol=rtol
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)
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@parametrize(
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batch=[11],
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dim=[96],
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max_seqlen=[66],
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width=[4],
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)
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def test_causal_conv1d_varlen(
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self,
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batch,
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dim,
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max_seqlen,
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width,
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has_bias=False,
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dtype=torch.bfloat16,
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prepack=False,
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):
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total_entries = batch + 3
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seqlens = torch.randint(1, max_seqlen, (batch + 1,))
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seqlens[0] = 0
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# 1 or 2 must test
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seqlens[-2] = 2
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query_start_loc = torch.cumsum(seqlens, dim=0).to(torch.int32)
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seqlen = query_start_loc[-1].item()
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x = torch.randn(seqlen, dim, dtype=dtype).transpose_(-1, -2)
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weight = torch.randn(dim, width, dtype=dtype)
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bias = torch.randn(dim, dtype=dtype) if has_bias else None
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final_states = torch.randn(total_entries, dim, width - 1, dtype=dtype)
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final_states_ref = final_states.clone()
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has_initial_states = torch.randint(0, 2, (batch,), dtype=torch.bool).fill_(
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False
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)
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state_indices = torch.randperm(total_entries, dtype=torch.int32)[:batch]
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out_ref = []
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out_ref_b = []
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return_final_states = final_states is not None
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splits = torch.split(x, seqlens[1:].tolist(), dim=1)
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for i, x_s in enumerate(splits):
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out_ref_b.append(
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causal_conv1d_ref(
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x_s.unsqueeze(0),
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weight,
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bias,
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activation=self.activation,
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return_final_states=return_final_states,
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final_states_out=(
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final_states_ref[state_indices[i]].unsqueeze(0)
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if return_final_states
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else None
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),
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initial_states=(
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final_states_ref[state_indices[i]].unsqueeze(0)
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if has_initial_states[i]
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else None
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),
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)
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)
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out_ref.append(torch.cat([t[0] for t in out_ref_b], dim=2))
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out_ref_tensor = torch.cat(out_ref, dim=0).squeeze(0)
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out = causal_conv1d_fwd(
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x,
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weight,
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bias,
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final_states,
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query_start_loc,
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state_indices,
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has_initial_states,
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self.activation in ["silu"],
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PAD_SLOT_ID,
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prepack,
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)
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atol = rtol = precision[dtype]
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torch.testing.assert_close(out_ref_tensor, out, atol=atol, rtol=rtol)
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torch.testing.assert_close(final_states_ref, final_states, atol=atol, rtol=rtol)
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@parametrize(
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batch=[11],
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dim=[32, 64, 96],
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width=[4],
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)
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def test_causal_conv1d_update(
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self, batch, dim, width, has_bias=False, dtype=torch.bfloat16, prepack=True
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):
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x = torch.randn(batch, dim).to(dtype)
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conv_state = torch.randn(batch, dim, width - 1, dtype=dtype)
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weight = torch.randn(dim, width).to(dtype)
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bias = torch.randn(dim).to(dtype) if has_bias else None
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packed_weight = causal_conv1d_weight_pack(weight) if prepack else weight
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conv_state_ref = conv_state.clone()
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out_ref = causal_conv1d_update_ref(
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x, conv_state_ref, weight, bias, activation=self.activation
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)
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cache_seqlens = None
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conv_state_indices = None
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out = causal_conv1d_update(
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x,
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conv_state,
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packed_weight,
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bias,
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self.activation in ["silu"],
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cache_seqlens,
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conv_state_indices,
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PAD_SLOT_ID,
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prepack,
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)
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atol = rtol = precision[dtype]
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torch.testing.assert_close(out_ref, out, atol=atol, rtol=rtol)
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torch.testing.assert_close(conv_state_ref, conv_state, atol=atol, rtol=rtol)
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@parametrize(
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batch=[7],
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dim=[96],
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width=[4],
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)
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def test_causal_conv1d_update_with_batch_gather(
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self, batch, dim, width, has_bias=False, dtype=torch.bfloat16, prepack=True
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):
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total_entries = batch + 3
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x = torch.randn(batch, dim).to(dtype=dtype)
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conv_state_indices = torch.randperm(total_entries)[:batch].to(dtype=torch.int32)
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conv_state = torch.randn(total_entries, dim, width - 1, dtype=dtype)
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weight = torch.randn(dim, width).to(dtype=dtype)
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bias = torch.randn(dim).to(dtype=dtype) if has_bias else None
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conv_state_ref = conv_state[conv_state_indices, :]
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packed_weight = causal_conv1d_weight_pack(weight) if prepack else weight
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out_ref = causal_conv1d_update_ref(
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x, conv_state_ref, weight, bias, activation=self.activation
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)
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cache_seqlens = None
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out = causal_conv1d_update(
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x,
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conv_state,
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packed_weight,
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bias,
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self.activation in ["silu"],
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cache_seqlens,
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conv_state_indices,
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PAD_SLOT_ID,
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prepack,
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)
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atol = rtol = precision[dtype]
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torch.testing.assert_close(out_ref, out, atol=atol, rtol=rtol)
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torch.testing.assert_close(
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conv_state_ref, conv_state[conv_state_indices, :], atol=atol, rtol=rtol
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)
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if __name__ == "__main__":
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unittest.main()
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