mirror of https://github.com/hpcaitech/ColossalAI
542 lines
18 KiB
Python
542 lines
18 KiB
Python
# Adapted from AutoGPTQ auto_gptq: https://github.com/PanQiWei/AutoGPTQ
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import torch
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import triton
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import triton.language as tl
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from auto_gptq.nn_modules.triton_utils import custom_autotune
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@triton.jit
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def tanh(x):
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# Tanh is just a scaled sigmoid
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return 2 * tl.sigmoid(2 * x) - 1
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@triton.jit
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def cosh(x):
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exp_x = tl.exp(x)
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return (exp_x + 1.0 / exp_x) * 0.5
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# a Triton implementation of the most used activations
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# See for instance http://arxiv.org/abs/1606.08415 for an overview
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# ReLU
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@triton.jit
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def relu(x):
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"""
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ReLU_ activation function
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.. _ReLU: https://pytorch.org/docs/stable/generated/torch.nn.ReLU.html
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"""
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return tl.where(x >= 0, x, 0.0)
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@triton.jit
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def squared_relu(x):
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"""
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Squared ReLU activation, as proposed in the Primer_ paper.
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.. _Primer: https://arxiv.org/abs/2109.08668
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"""
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x_sq = x * x
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return tl.where(x > 0.0, x_sq, 0.0)
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@triton.jit
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def star_relu(x):
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"""
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Star ReLU activation, as proposed in the "MetaFormer Baselines for Vision"_ paper.
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.. _ "MetaFormer Baselines for Vision": https://arxiv.org/pdf/2210.13452.pdf
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"""
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x_sq = x * x
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return 0.8944 * tl.where(x > 0.0, x_sq, 0.0) - 0.4472
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# Leaky ReLU
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@triton.jit
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def leaky_relu(x):
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"""
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LeakyReLU_ activation
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.. _LeakyReLU: https://pytorch.org/docs/stable/generated/torch.nn.LeakyReLU.html
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"""
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return tl.where(x >= 0.0, x, 0.01 * x)
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@triton.jit
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def gelu(x):
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"""
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GeLU_ activation - Gaussian error linear unit
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.. _GeLU: https://arxiv.org/pdf/1606.08415.pdf
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"""
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return 0.5 * x * (1 + tanh(_kAlpha * (x + 0.044715 * x * x * x)))
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@triton.jit
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def smelu(x):
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"""
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SmeLU_ activation - Smooth ReLU with beta=2.0
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.. _SmeLU: https://arxiv.org/pdf/2202.06499.pdf
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"""
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beta = 2.0
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relu = tl.where(x >= beta, x, 0.0)
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return tl.where(tl.abs(x) <= beta, (x + beta) * (x + beta) / (4.0 * beta), relu)
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@triton.jit
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def silu(x):
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return x * tl.sigmoid(x)
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@custom_autotune.autotune(
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configs=[
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 256, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 128, "BLOCK_SIZE_N": 128, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 128, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 128, "BLOCK_SIZE_N": 32, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 64, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 128, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=2, num_warps=8
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 64, "BLOCK_SIZE_K": 64, "GROUP_SIZE_M": 8}, num_stages=3, num_warps=8
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),
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triton.Config(
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{"BLOCK_SIZE_M": 32, "BLOCK_SIZE_N": 32, "BLOCK_SIZE_K": 128, "GROUP_SIZE_M": 8}, num_stages=2, num_warps=4
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),
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],
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key=["M", "N", "K"],
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nearest_power_of_two=True,
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prune_configs_by={
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"early_config_prune": custom_autotune.matmul248_kernel_config_pruner,
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"perf_model": None,
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"top_k": None,
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},
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)
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@triton.jit
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def cai_gptq_matmul_248_kernel(
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a_ptr,
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b_ptr,
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c_ptr,
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scales_ptr,
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zeros_ptr,
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bias_ptr,
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residual_ptr,
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M,
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N,
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K,
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bits,
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maxq,
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gptq_group_size,
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stride_am,
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stride_ak,
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stride_bk,
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stride_bn,
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stride_cm,
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stride_cn,
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stride_scales,
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stride_zeros,
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QKV_FUSED: tl.constexpr,
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ADD_BIAS: tl.constexpr,
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ADD_RESIDUAL: tl.constexpr,
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ACT_TYPE: tl.constexpr,
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BLOCK_SIZE_M: tl.constexpr,
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BLOCK_SIZE_N: tl.constexpr,
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BLOCK_SIZE_K: tl.constexpr,
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GROUP_SIZE_M: tl.constexpr,
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):
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"""
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Compute the matrix multiplication C = A x B.
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A is of shape (M, K) float16
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B is of shape (K//8, N) int32
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C is of shape (M, N) float16
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scales is of shape (G, N) float16
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zeros is of shape (G, N) float16
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"""
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infearure_per_bits = 32 // bits
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pid = tl.program_id(axis=0)
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NK = K
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num_pid_m = tl.cdiv(M, BLOCK_SIZE_M)
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num_pid_n = tl.cdiv(N, BLOCK_SIZE_N)
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num_pid_k = tl.cdiv(NK, BLOCK_SIZE_K)
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qkv_offset = pid // (num_pid_m * num_pid_n)
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pid = pid % (num_pid_m * num_pid_n)
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num_pid_in_group = GROUP_SIZE_M * num_pid_n
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group_id = pid // num_pid_in_group
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first_pid_m = group_id * GROUP_SIZE_M
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group_size_m = min(num_pid_m - first_pid_m, GROUP_SIZE_M)
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pid_m = first_pid_m + (pid % group_size_m)
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pid_n = (pid % num_pid_in_group) // group_size_m
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offs_am = pid_m * BLOCK_SIZE_M + tl.arange(0, BLOCK_SIZE_M)
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offs_bn = pid_n * BLOCK_SIZE_N + tl.arange(0, BLOCK_SIZE_N)
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offs_k = tl.arange(0, BLOCK_SIZE_K)
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# offs_bk = offs_k + qkv_offset * NK
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a_ptrs = a_ptr + (offs_am[:, None] * stride_am + offs_k[None, :] * stride_ak) # (BLOCK_SIZE_M, BLOCK_SIZE_K)
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a_mask = offs_am[:, None] < M
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# b_ptrs is set up such that it repeats elements along the K axis 8 times
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b_ptrs = (
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b_ptr
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+ qkv_offset * N * NK // infearure_per_bits
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+ ((offs_k[:, None] // infearure_per_bits) * stride_bk + offs_bn[None, :] * stride_bn)
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) # (BLOCK_SIZE_K, BLOCK_SIZE_N)
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# g_ptrs = g_ptr + offs_k
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# shifter is used to extract the N bits of each element in the 32-bit word from B
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scales_ptrs = scales_ptr + qkv_offset * NK * N // gptq_group_size + offs_bn[None, :]
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zeros_ptrs = (
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zeros_ptr
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+ qkv_offset * NK * N // gptq_group_size // infearure_per_bits
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+ (offs_bn[None, :] // infearure_per_bits)
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)
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shifter = (offs_k % infearure_per_bits) * bits
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zeros_shifter = (offs_bn % infearure_per_bits) * bits
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accumulator = tl.zeros((BLOCK_SIZE_M, BLOCK_SIZE_N), dtype=tl.float32)
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g_idx_base = tl.arange(0, BLOCK_SIZE_K)
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g_idx_base = g_idx_base // gptq_group_size
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g_idx = g_idx_base
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# tl.device_print("gidx, ", g_idx)
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scales = tl.load(scales_ptrs + g_idx[:, None] * stride_scales) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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zeros = tl.load(zeros_ptrs + g_idx[:, None] * stride_zeros) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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zeros = (zeros >> zeros_shifter[None, :]) & maxq
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zeros = zeros + 1
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for k in range(0, num_pid_k):
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# g_idx = tl.load(g_ptrs)
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# if (k + 1) * BLOCK_SIZE_K > currend_group_end:
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scales = tl.load(scales_ptrs + g_idx[:, None] * stride_scales) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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zeros = tl.load(zeros_ptrs + g_idx[:, None] * stride_zeros) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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zeros = (zeros >> zeros_shifter[None, :]) & maxq
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zeros = zeros + 1
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# Fetch scales and zeros; these are per-outfeature and thus reused in the inner loop
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a = tl.load(a_ptrs, mask=a_mask, other=0.0) # (BLOCK_SIZE_M, BLOCK_SIZE_K)
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b = tl.load(b_ptrs) # (BLOCK_SIZE_K, BLOCK_SIZE_N), but repeated
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# Now we need to unpack b (which is N-bit values) into 32-bit values
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b = (b >> shifter[:, None]) & maxq # Extract the N-bit values
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b = (b - zeros).to(tl.float16) * scales # Scale and shift
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accumulator += tl.dot(a, b)
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a_ptrs += BLOCK_SIZE_K
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b_ptrs += (BLOCK_SIZE_K // infearure_per_bits) * stride_bk
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g_idx = g_idx_base + ((k + 1) * BLOCK_SIZE_K) // gptq_group_size
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# if (k + 2) * BLOCK_SIZE_K > currend_group_end:
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c_ptrs = c_ptr + qkv_offset * M * N + stride_cm * offs_am[:, None] + stride_cn * offs_bn[None, :]
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c_mask = (offs_am[:, None] < M) & (offs_bn[None, :] < N)
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if ADD_BIAS:
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bias_mask = offs_bn < N
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offs_bn += qkv_offset * N
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bias_ptrs = bias_ptr + stride_cn * offs_bn
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bias = tl.load(bias_ptrs, mask=bias_mask, other=0.0) # (BLOCK_SIZE_M, BLOCK_SIZE_K)
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accumulator += bias[None, :]
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if ACT_TYPE == 1:
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accumulator = relu(accumulator)
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elif ACT_TYPE == 2:
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accumulator = gelu(accumulator)
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elif ACT_TYPE == 3:
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accumulator = silu(accumulator)
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if ADD_RESIDUAL:
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residual_ptrs = residual_ptr + stride_cm * offs_am[:, None] + stride_cn * offs_bn[None, :]
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res = tl.load(residual_ptrs, mask=c_mask, other=0.0)
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accumulator += res
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tl.store(c_ptrs, accumulator, mask=c_mask)
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@custom_autotune.autotune(
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configs=[
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 256, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 128, "BLOCK_SIZE_N": 128, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 128, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 128, "BLOCK_SIZE_N": 32, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 64, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=4, num_warps=4
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 128, "BLOCK_SIZE_K": 32, "GROUP_SIZE_M": 8}, num_stages=2, num_warps=8
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),
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triton.Config(
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{"BLOCK_SIZE_M": 64, "BLOCK_SIZE_N": 64, "BLOCK_SIZE_K": 64, "GROUP_SIZE_M": 8}, num_stages=3, num_warps=8
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),
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triton.Config(
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{"BLOCK_SIZE_M": 32, "BLOCK_SIZE_N": 32, "BLOCK_SIZE_K": 128, "GROUP_SIZE_M": 8}, num_stages=2, num_warps=4
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),
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],
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key=["M", "N", "K"],
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nearest_power_of_two=True,
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prune_configs_by={
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"early_config_prune": custom_autotune.matmul248_kernel_config_pruner,
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"perf_model": None,
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"top_k": None,
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},
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)
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@triton.jit
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def cai_gptq_idx_matmul_248_kernel(
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a_ptr,
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b_ptr,
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c_ptr,
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scales_ptr,
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zeros_ptr,
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idx_ptr,
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bias_ptr,
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residual_ptr,
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M,
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N,
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K,
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bits,
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maxq,
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gptq_group_size,
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stride_am,
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stride_ak,
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stride_bk,
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stride_bn,
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stride_cm,
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stride_cn,
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stride_scales,
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stride_zeros,
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QKV_FUSED: tl.constexpr,
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ADD_BIAS: tl.constexpr,
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ADD_RESIDUAL: tl.constexpr,
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ACT_TYPE: tl.constexpr,
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BLOCK_SIZE_M: tl.constexpr,
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BLOCK_SIZE_N: tl.constexpr,
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BLOCK_SIZE_K: tl.constexpr,
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GROUP_SIZE_M: tl.constexpr,
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):
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"""
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Compute the matrix multiplication C = A x B.
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A is of shape (M, K) float16
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B is of shape (K//8, N) int32
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C is of shape (M, N) float16
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scales is of shape (G, N) float16
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zeros is of shape (G, N) float16
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"""
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infearure_per_bits = 32 // bits
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pid = tl.program_id(axis=0)
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NK = K
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# if QKV_FUSED:
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# NK = K//3
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# else:
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# NK = K
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# NK = K
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num_pid_m = tl.cdiv(M, BLOCK_SIZE_M)
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num_pid_n = tl.cdiv(N, BLOCK_SIZE_N)
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num_pid_k = tl.cdiv(NK, BLOCK_SIZE_K)
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qkv_offset = pid // (num_pid_m * num_pid_n)
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pid = pid % (num_pid_m * num_pid_n)
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num_pid_in_group = GROUP_SIZE_M * num_pid_n
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group_id = pid // num_pid_in_group
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first_pid_m = group_id * GROUP_SIZE_M
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group_size_m = min(num_pid_m - first_pid_m, GROUP_SIZE_M)
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pid_m = first_pid_m + (pid % group_size_m)
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pid_n = (pid % num_pid_in_group) // group_size_m
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offs_am = pid_m * BLOCK_SIZE_M + tl.arange(0, BLOCK_SIZE_M)
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offs_bn = pid_n * BLOCK_SIZE_N + tl.arange(0, BLOCK_SIZE_N)
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offs_k = tl.arange(0, BLOCK_SIZE_K)
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# offs_bk = offs_k + qkv_offset * NK
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a_ptrs = a_ptr + (offs_am[:, None] * stride_am + offs_k[None, :] * stride_ak) # (BLOCK_SIZE_M, BLOCK_SIZE_K)
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a_mask = offs_am[:, None] < M
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# b_ptrs is set up such that it repeats elements along the K axis 8 times
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b_ptrs = (
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b_ptr
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+ qkv_offset * N * NK // infearure_per_bits
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+ ((offs_k[:, None] // infearure_per_bits) * stride_bk + offs_bn[None, :] * stride_bn)
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) # (BLOCK_SIZE_K, BLOCK_SIZE_N)
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# g_ptrs = g_ptr + offs_k
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# shifter is used to extract the N bits of each element in the 32-bit word from B
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scales_ptrs = scales_ptr + qkv_offset * NK * N // gptq_group_size + offs_bn[None, :]
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zeros_ptrs = (
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zeros_ptr
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+ qkv_offset * NK * N // gptq_group_size // infearure_per_bits
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+ (offs_bn[None, :] // infearure_per_bits)
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)
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shifter = (offs_k % infearure_per_bits) * bits
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zeros_shifter = (offs_bn % infearure_per_bits) * bits
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accumulator = tl.zeros((BLOCK_SIZE_M, BLOCK_SIZE_N), dtype=tl.float32)
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g_ptrs = idx_ptr + offs_k
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g_idx = tl.load(g_ptrs)
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# tl.device_print("gidx, ", g_idx)
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zeros_ptrs = zeros_ptr + (offs_bn[None, :] // infearure_per_bits)
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scales = tl.load(scales_ptrs + g_idx[:, None] * stride_scales) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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for k in range(0, num_pid_k):
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g_idx = tl.load(g_ptrs)
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scales = tl.load(scales_ptrs + g_idx[:, None] * stride_scales) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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zeros = tl.load(zeros_ptrs + g_idx[:, None] * stride_zeros) # (BLOCK_SIZE_K, BLOCK_SIZE_N,)
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zeros = (zeros >> zeros_shifter[None, :]) & maxq
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zeros = zeros + 1
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# Fetch scales and zeros; these are per-outfeature and thus reused in the inner loop
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a = tl.load(a_ptrs, mask=a_mask, other=0.0) # (BLOCK_SIZE_M, BLOCK_SIZE_K)
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b = tl.load(b_ptrs) # (BLOCK_SIZE_K, BLOCK_SIZE_N), but repeated
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# Now we need to unpack b (which is N-bit values) into 32-bit values
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b = (b >> shifter[:, None]) & maxq # Extract the N-bit values
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b = (b - zeros).to(tl.float16) * scales # Scale and shift
|
|
accumulator += tl.dot(a, b)
|
|
|
|
a_ptrs += BLOCK_SIZE_K
|
|
b_ptrs += (BLOCK_SIZE_K // infearure_per_bits) * stride_bk
|
|
g_ptrs += BLOCK_SIZE_K
|
|
|
|
c_ptrs = c_ptr + qkv_offset * M * N + stride_cm * offs_am[:, None] + stride_cn * offs_bn[None, :]
|
|
c_mask = (offs_am[:, None] < M) & (offs_bn[None, :] < N)
|
|
|
|
if ADD_BIAS:
|
|
bias_mask = offs_bn < N
|
|
offs_bn += qkv_offset * N
|
|
bias_ptrs = bias_ptr + stride_cn * offs_bn
|
|
bias = tl.load(bias_ptrs, mask=bias_mask, other=0.0) # (BLOCK_SIZE_M, BLOCK_SIZE_K)
|
|
accumulator += bias[None, :]
|
|
|
|
if ACT_TYPE == 1:
|
|
accumulator = relu(accumulator)
|
|
elif ACT_TYPE == 2:
|
|
accumulator = gelu(accumulator)
|
|
elif ACT_TYPE == 3:
|
|
accumulator = silu(accumulator)
|
|
|
|
if ADD_RESIDUAL:
|
|
residual_ptrs = residual_ptr + stride_cm * offs_am[:, None] + stride_cn * offs_bn[None, :]
|
|
res = tl.load(residual_ptrs, mask=c_mask, other=0.0)
|
|
accumulator += res
|
|
|
|
tl.store(c_ptrs, accumulator, mask=c_mask)
|
|
|
|
|
|
def gptq_fused_linear_triton(
|
|
input,
|
|
qweight,
|
|
scales,
|
|
qzeros,
|
|
bias,
|
|
residual,
|
|
bits,
|
|
maxq,
|
|
gptq_group_size,
|
|
qkv_fused,
|
|
add_bias,
|
|
add_residual,
|
|
g_idx=None,
|
|
act_type=0,
|
|
):
|
|
# print("gptq fused ", qkv_fused, add_bias, add_residual)
|
|
assert input.is_cuda, "input is not in cuda"
|
|
assert qweight.is_cuda, "qweight is not in cuda"
|
|
assert scales.is_cuda, "scales is not in cuda"
|
|
assert qzeros.is_cuda, "qzeros is not in cuda"
|
|
|
|
with torch.cuda.device(input.device):
|
|
if qkv_fused:
|
|
grid = lambda META: (
|
|
triton.cdiv(input.shape[0], META["BLOCK_SIZE_M"])
|
|
* triton.cdiv(qweight.shape[1], META["BLOCK_SIZE_N"])
|
|
* 3,
|
|
)
|
|
output = torch.empty((input.shape[0] * 3, qweight.shape[1]), device=input.device, dtype=torch.float16)
|
|
else:
|
|
grid = lambda META: (
|
|
triton.cdiv(input.shape[0], META["BLOCK_SIZE_M"]) * triton.cdiv(qweight.shape[1], META["BLOCK_SIZE_N"]),
|
|
)
|
|
output = torch.empty((input.shape[0], qweight.shape[1]), device=input.device, dtype=torch.float16)
|
|
# print("dtype, ", qweight.dtype, output.dtype, scales.dtype, qzeros.dtype, bias.dtype, residual.dtype)
|
|
if g_idx is None:
|
|
cai_gptq_matmul_248_kernel[grid](
|
|
input,
|
|
qweight,
|
|
output,
|
|
scales,
|
|
qzeros,
|
|
bias,
|
|
residual,
|
|
input.shape[0],
|
|
qweight.shape[1],
|
|
input.shape[1],
|
|
bits,
|
|
maxq,
|
|
gptq_group_size,
|
|
input.stride(0),
|
|
input.stride(1),
|
|
qweight.stride(0),
|
|
qweight.stride(1),
|
|
output.stride(0),
|
|
output.stride(1),
|
|
scales.stride(0),
|
|
qzeros.stride(0),
|
|
QKV_FUSED=qkv_fused,
|
|
ADD_BIAS=add_bias,
|
|
ADD_RESIDUAL=add_residual,
|
|
ACT_TYPE=act_type,
|
|
)
|
|
else:
|
|
cai_gptq_idx_matmul_248_kernel[grid](
|
|
input,
|
|
qweight,
|
|
output,
|
|
scales,
|
|
qzeros,
|
|
g_idx,
|
|
bias,
|
|
residual,
|
|
input.shape[0],
|
|
qweight.shape[1],
|
|
input.shape[1],
|
|
bits,
|
|
maxq,
|
|
gptq_group_size,
|
|
input.stride(0),
|
|
input.stride(1),
|
|
qweight.stride(0),
|
|
qweight.stride(1),
|
|
output.stride(0),
|
|
output.stride(1),
|
|
scales.stride(0),
|
|
qzeros.stride(0),
|
|
QKV_FUSED=qkv_fused,
|
|
ADD_BIAS=add_bias,
|
|
ADD_RESIDUAL=add_residual,
|
|
ACT_TYPE=act_type,
|
|
)
|
|
if qkv_fused:
|
|
return output.view(3, input.shape[0], qweight.shape[1])
|
|
else:
|
|
return output
|