427 lines
12 KiB
Python
427 lines
12 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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from threading import Lock
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import pytest
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import torch
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import vllm.lora.ops.torch_ops as torch_ops
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import vllm.lora.ops.triton_ops as triton_ops
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from vllm.lora.ops.triton_ops import LoRAKernelMeta
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from vllm.lora.ops.triton_ops.utils import _LORA_A_PTR_DICT, _LORA_B_PTR_DICT
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from vllm.platforms import current_platform
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from .utils import PunicaTensors, assert_close, generate_data_for_nslices
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@pytest.fixture(autouse=True)
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def reset_device(reset_default_device):
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pass
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# Utility shrink and expand operations used as reference implementations.
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def sgmv_shrink_for_nslices(
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nslices: int, inputs_tensor: torch.Tensor,
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lora_weights_lst: list[torch.Tensor], out_tensor: torch.Tensor,
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b_seq_start_loc: torch.Tensor, seq_len_tensor: torch.Tensor,
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prompt_lora_mapping: torch.Tensor, batches: int, max_seq_length: int,
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num_tokens: int, scaling: float):
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"""
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Wrapper around torch_ops.sgmv_shrink that handles any nslices.
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"""
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for index in range(nslices):
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torch_ops.sgmv_shrink(
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inputs_tensor,
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lora_weights_lst[index],
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out_tensor[index],
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b_seq_start_loc,
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seq_len_tensor,
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prompt_lora_mapping,
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batches,
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max_seq_length,
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num_tokens,
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scaling,
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)
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def sgmv_expand_for_nslices(nslices: int, hidden_size: int,
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inputs_tensor: torch.Tensor,
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lora_weights_lst: list[torch.Tensor],
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out_tensor: torch.Tensor,
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b_seq_start_loc: torch.Tensor,
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seq_len_tensor: torch.Tensor,
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prompt_lora_mapping: torch.Tensor, batches: int,
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max_seq_length: int, num_tokens: int,
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add_inputs: bool) -> None:
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"""
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Wrapper around torch_ops.sgmv_expand that handles any nslices.
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"""
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if nslices == 1:
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# Verify the torch's sgmv_expand op
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torch_ops.sgmv_expand(
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inputs_tensor[0],
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lora_weights_lst[0],
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out_tensor,
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b_seq_start_loc,
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seq_len_tensor,
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prompt_lora_mapping,
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batches,
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max_seq_length,
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num_tokens,
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add_inputs=add_inputs,
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)
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else:
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slice_offset = 0
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for index in range(nslices):
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lora_weights = lora_weights_lst[index]
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torch_ops.sgmv_expand_slice(
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inputs_tensor[index],
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lora_weights,
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out_tensor,
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b_seq_start_loc,
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seq_len_tensor,
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prompt_lora_mapping,
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batches,
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max_seq_length,
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num_tokens,
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slice_offset,
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hidden_size,
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add_inputs=add_inputs,
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)
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slice_offset += hidden_size
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_dict_lock = Lock()
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def check_lora_shrink_kernel(batches: int, num_loras: int, rank: int,
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hidden_size: int, nslices: int,
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dtype: torch.dtype, device: str, seq_length: int,
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scaling: float):
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"""
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Compare outputs of torch_ops.sgmv_shrink and triton_ops.lora_shrink
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kernels.
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"""
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data: PunicaTensors = generate_data_for_nslices(
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batches,
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hidden_size,
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num_loras,
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rank,
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seq_length,
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nslices,
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dtype,
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"shrink",
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device,
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)
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max_seq_length, token_nums = data.meta()
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# Setup metadata information for SGMV and reference kernels
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sgmv_meta_args = (data.b_seq_start_loc, data.seq_len_tensor,
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data.prompt_lora_mapping, batches, max_seq_length,
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token_nums)
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# Setup metadata information for the LoRA kernel.
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lora_meta = LoRAKernelMeta.make(max_loras=num_loras,
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max_num_tokens=token_nums,
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device='cuda')
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lora_meta.prepare_tensors(data.token_lora_mapping)
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ref_out_tensor = data.ref_out_tensor
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out_tensor = data.our_out_tensor.clone()
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# Preventing cache error pointer.
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with _dict_lock:
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# lora_shrink kernel
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_LORA_A_PTR_DICT.clear()
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triton_ops.lora_shrink(
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data.inputs_tensor,
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data.lora_weights,
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out_tensor,
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*lora_meta.meta_args(token_nums=token_nums),
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scaling,
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)
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# Reference
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sgmv_shrink_for_nslices(
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nslices,
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data.inputs_tensor,
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data.lora_weights,
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ref_out_tensor,
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*sgmv_meta_args,
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scaling,
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)
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assert_close(out_tensor, ref_out_tensor)
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def check_lora_expand_kernel(batches: int, num_loras: int, rank: int,
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hidden_size: int, nslices: int,
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dtype: torch.dtype, device: str, seq_length: int,
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add_inputs: bool):
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"""
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Compare outputs of torch_ops.sgmv_expand and triton_ops.lora_expand
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kernels.
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"""
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data: PunicaTensors = generate_data_for_nslices(
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batches,
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hidden_size,
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num_loras,
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rank,
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seq_length,
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nslices,
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dtype,
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"expand",
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device,
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)
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max_seq_length, token_nums = data.meta()
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# Setup metadata information for SGMV and reference kernels
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sgmv_meta_args = (data.b_seq_start_loc, data.seq_len_tensor,
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data.prompt_lora_mapping, batches, max_seq_length,
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token_nums)
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# Setup metadata information for the LoRA kernel.
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lora_meta = LoRAKernelMeta.make(max_loras=num_loras,
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max_num_tokens=token_nums,
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device='cuda')
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lora_meta.prepare_tensors(data.token_lora_mapping)
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# Setup output tensors
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ref_out_tensor = data.ref_out_tensor
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out_tensor = data.our_out_tensor.clone()
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with _dict_lock:
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# lora_expand kernel
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_LORA_B_PTR_DICT.clear()
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triton_ops.lora_expand(data.inputs_tensor,
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data.lora_weights,
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out_tensor,
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*lora_meta.meta_args(token_nums=token_nums),
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offset_start=0,
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add_inputs=add_inputs)
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# Reference
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sgmv_expand_for_nslices(nslices,
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hidden_size,
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data.inputs_tensor,
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data.lora_weights,
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ref_out_tensor,
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*sgmv_meta_args,
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add_inputs=add_inputs)
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assert_close(out_tensor, ref_out_tensor)
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# Tests
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# We test the punica kernels along 2 verticals mainly.
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# 1. Variations in hidden_dim size
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# 2. Variations in all other parameters like (batch_size, max_rank, num_loras
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# etc.)
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# We have collected the hidden_sizes included in the LoRA models
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# currently supported by vLLM. It tests whether the corresponding Triton
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# kernel can run normally when tensor parallelism is set to
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# [1, 2, 4, 8, 16, 32, 64].
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HIDDEN_SIZES = [
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128,
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256,
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512,
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896,
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1024,
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1152,
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1216,
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1280,
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1536,
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1664,
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2048,
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2240,
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2304,
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2368,
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2432,
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2560,
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2752,
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3072,
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3328,
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3456,
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3584,
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3712,
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4096,
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4480,
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4608,
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4736,
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4864,
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5120,
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5504,
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5632,
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5888,
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6144,
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6400,
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6848,
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6912,
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7168,
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7424,
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8192,
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8960,
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9216,
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9472,
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10240,
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11008,
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11264,
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13824,
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14336,
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14784,
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14848,
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15360,
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18944,
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22016,
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22528,
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24576,
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27392,
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27648,
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29568,
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29696,
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32000,
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32256,
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32512,
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32768,
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33024,
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36864,
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43264,
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49152,
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49408,
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60544,
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60672,
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64000,
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64256,
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102400,
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102656,
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128000,
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128256,
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]
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#The size of TP
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divisibility = [1, 2, 8, 16, 64]
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all_hidden_size = []
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for div in divisibility:
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for hidden_size in HIDDEN_SIZES:
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all_hidden_size.append(hidden_size // div)
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HIDDEN_SIZES = list(set(all_hidden_size))
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# Test params that focuses on hidden_size variation.
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hs_test_params = {
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"hidden_sizes": HIDDEN_SIZES,
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"batches": [4],
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"num_loras": [4],
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"max_ranks": [32],
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}
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# General tests params that tests for variations in all dimensions
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# except hidden_size.
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test_params = {
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"hidden_sizes": [2049],
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"batches": [1, 4, 16, 32],
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"num_loras": [1, 8, 32, 128],
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"max_ranks": [1, 4, 8, 16, 32, 64, 128, 256],
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}
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DTYPES = [torch.float16, torch.bfloat16]
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DEVICES = [f"cuda:{0}"]
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SEED = [0]
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@pytest.mark.parametrize("batches", test_params['batches'])
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@pytest.mark.parametrize("num_loras", test_params['num_loras'])
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@pytest.mark.parametrize("rank", test_params['max_ranks'])
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@pytest.mark.parametrize("hidden_size", test_params['hidden_sizes'])
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@pytest.mark.parametrize("nslices", [1, 2, 3])
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@pytest.mark.parametrize("dtype", DTYPES)
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@pytest.mark.parametrize("device", DEVICES)
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@pytest.mark.parametrize("seed", SEED)
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@pytest.mark.parametrize("op_type", ["shrink", "expand"])
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def test_kernels(
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batches: int,
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num_loras: int,
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rank: int,
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hidden_size: int,
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nslices: int,
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dtype: torch.dtype,
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device: str,
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seed: int,
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op_type: str,
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):
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"""
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Tests LoRA kernels.
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"""
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torch.set_default_device(device)
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current_platform.seed_everything(seed)
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if op_type == "shrink":
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check_lora_shrink_kernel(batches=batches,
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num_loras=num_loras,
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rank=rank,
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hidden_size=hidden_size,
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nslices=nslices,
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dtype=dtype,
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device=device,
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seq_length=128,
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scaling=0.5)
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else:
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check_lora_expand_kernel(batches=batches,
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num_loras=num_loras,
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rank=rank,
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hidden_size=hidden_size,
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nslices=nslices,
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dtype=dtype,
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device=device,
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seq_length=128,
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add_inputs=True)
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@pytest.mark.parametrize("batches", hs_test_params['batches'])
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@pytest.mark.parametrize("num_loras", hs_test_params['num_loras'])
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@pytest.mark.parametrize("rank", hs_test_params['max_ranks'])
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@pytest.mark.parametrize("hidden_size", hs_test_params['hidden_sizes'])
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@pytest.mark.parametrize("nslices", [1, 2, 3])
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@pytest.mark.parametrize("dtype", DTYPES)
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@pytest.mark.parametrize("device", DEVICES)
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@pytest.mark.parametrize("seed", SEED)
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@pytest.mark.parametrize("op_type", ["shrink", "expand"])
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def test_kernels_hidden_size(
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batches: int,
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num_loras: int,
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rank: int,
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hidden_size: int,
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nslices: int,
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dtype: torch.dtype,
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device: str,
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seed: int,
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op_type: str,
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):
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"""
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Tests SGMV and LoRA kernels.
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"""
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torch.set_default_device(device)
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current_platform.seed_everything(seed)
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if op_type == "shrink":
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check_lora_shrink_kernel(batches=batches,
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num_loras=num_loras,
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rank=rank,
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hidden_size=hidden_size,
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nslices=nslices,
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dtype=dtype,
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device=device,
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seq_length=128,
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scaling=0.5)
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else:
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check_lora_expand_kernel(batches=batches,
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num_loras=num_loras,
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rank=rank,
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hidden_size=hidden_size,
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nslices=nslices,
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dtype=dtype,
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device=device,
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seq_length=128,
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add_inputs=True)
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