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ktransformers/kt-kernel/bench/bench_linear.py
2025-12-17 19:46:32 +08:00

123 lines
4.1 KiB
Python

#!/usr/bin/env python
# coding=utf-8
"""
Description :
Author : chenht2022
Date : 2024-07-25 10:31:59
Version : 1.0.0
LastEditors : chenht2022
LastEditTime : 2024-08-06 10:35:35
Copyright (c) 2024 by KVCache.AI, All Rights Reserved.
"""
import os, sys
import time
sys.path.append(os.path.dirname(__file__) + "/../build")
from kt_kernel import kt_kernel_ext
import torch
input_size = 16384
output_size = 5120
stride = 16
group_max_len = 1024
layer_num = 10
qlen = 1
CPUInfer = kt_kernel_ext.CPUInfer(64)
warm_up_iter = 1000
test_iter = 10000
def bench_linear(quant_mode: str):
with torch.inference_mode(mode=True):
hidden_type = 30 # ggml_type::GGML_TYPE_BF16
if quant_mode == "fp32":
proj_type = 0 # ggml_type::GGML_TYPE_F32
bytes_per_elem = 4.000000
elif quant_mode == "fp16":
proj_type = 1 # ggml_type::GGML_TYPE_F16
bytes_per_elem = 2.000000
elif quant_mode == "bf16":
proj_type = 30 # ggml_type::GGML_TYPE_BF16
bytes_per_elem = 2.000000
elif quant_mode == "q8_0":
proj_type = 8 # ggml_type::GGML_TYPE_Q8_0
bytes_per_elem = 1.062500
elif quant_mode == "q6_k":
proj_type = 14 # ggml_type::GGML_TYPE_Q6_K
bytes_per_elem = 0.820312
elif quant_mode == "q5_k_m":
proj_type = 13 # ggml_type::GGML_TYPE_Q5_K
bytes_per_elem = 0.687500
elif quant_mode == "q4_k_m":
proj_type = 12 # ggml_type::GGML_TYPE_Q4_K
bytes_per_elem = 0.562500
elif quant_mode == "q3_k_m":
proj_type = 11 # ggml_type::GGML_TYPE_Q3_K
bytes_per_elem = 0.429688
elif quant_mode == "q2_k":
proj_type = 10 # ggml_type::GGML_TYPE_Q2_K
bytes_per_elem = 0.328125
elif quant_mode == "iq3_xs":
proj_type = 21 # ggml_type::GGML_TYPE_IQ3_S
bytes_per_elem = 0.429688
elif quant_mode == "iq2_xxs":
proj_type = 16 # ggml_type::GGML_TYPE_IQ2_XXS
bytes_per_elem = 0.257812
else:
assert False
linears = []
projs = []
for _ in range(layer_num):
proj = torch.randn((output_size, input_size), dtype=torch.float32, device="cuda").to("cpu").contiguous()
config = kt_kernel_ext.linear.LinearConfig(
input_size, output_size, stride, group_max_len, proj.data_ptr(), proj_type, hidden_type
)
linear = kt_kernel_ext.linear.Linear(config)
projs.append(proj)
linears.append(linear)
input = torch.randn((layer_num, qlen, input_size), dtype=torch.bfloat16, device="cuda").to("cpu").contiguous()
output = torch.empty((layer_num, qlen, output_size), dtype=torch.bfloat16, device="cuda").to("cpu").contiguous()
# warm up
for i in range(warm_up_iter):
CPUInfer.submit(
linears[i % layer_num].forward(qlen, input[i % layer_num].data_ptr(), output[i % layer_num].data_ptr())
)
CPUInfer.sync()
# test
start = time.perf_counter()
for i in range(test_iter):
CPUInfer.submit(
linears[i % layer_num].forward(qlen, input[i % layer_num].data_ptr(), output[i % layer_num].data_ptr())
)
CPUInfer.sync()
end = time.perf_counter()
total_time = end - start
print("Quant mode: ", quant_mode)
print("Time(s): ", total_time)
print("Iteration: ", test_iter)
print("Time(us) per iteration: ", total_time / test_iter * 1000000)
print(
"Bandwidth: ",
input_size * output_size * bytes_per_elem * test_iter / total_time / 1000 / 1000 / 1000,
"GB/s",
)
print("")
bench_linear("fp32")
bench_linear("fp16")
bench_linear("bf16")
bench_linear("q8_0")
bench_linear("q6_k")
bench_linear("q5_k_m")
bench_linear("q4_k_m")
bench_linear("q3_k_m")
bench_linear("q2_k")
# Not supported on __x86_64__
# bench_linear("iq3_xs")
# bench_linear("iq2_xxs")