ViperEkura
4244df2785
- drop the fused kernel; forward/backward are quantize + a pre-quantized GEMM - rename module fp8_mm -> fp8_ops (mm.cu -> ops.cu) - kernels/launchers fp8_gemm_kernel / launch_fp8_gemm; drop PqTraits/gather_trans/pack_fp8x4_vector - remove the in-kernel transposed-operand branches (TransA/TransB) - backward: quantize g once (amax_g here), explicit fp8 transposes, fast non-transposed GEMMs (dX = g@w^T, dW = g^T@x^T) - each pass uses a single FP8 format (E4M3 fwd / E5M2 bwd)
98 lines
2.8 KiB
CMake
98 lines
2.8 KiB
CMake
cmake_minimum_required(VERSION 3.18)
|
|
project(astrai_kernels LANGUAGES CUDA CXX)
|
|
|
|
set(CMAKE_CXX_STANDARD 17)
|
|
set(CMAKE_CXX_STANDARD_REQUIRED ON)
|
|
set(CMAKE_CUDA_STANDARD 17)
|
|
|
|
find_package(CUDAToolkit REQUIRED)
|
|
|
|
if(NOT DEFINED TORCH_HOME)
|
|
set(TORCH_HOME "$ENV{TORCH_HOME}")
|
|
endif()
|
|
if(NOT TORCH_HOME)
|
|
message(FATAL_ERROR "TORCH_HOME must point at the torch install dir (site-packages/torch)")
|
|
endif()
|
|
|
|
if(NOT DEFINED PYTHON_INCLUDE_DIR)
|
|
set(PYTHON_INCLUDE_DIR "/usr/include/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}")
|
|
endif()
|
|
|
|
if(NOT DEFINED ASTRAI_CUDA_ARCH)
|
|
if(DEFINED ENV{ASTRAI_CUDA_ARCH})
|
|
set(ASTRAI_CUDA_ARCH "$ENV{ASTRAI_CUDA_ARCH}")
|
|
else()
|
|
set(ASTRAI_CUDA_ARCH 80)
|
|
endif()
|
|
endif()
|
|
|
|
set(TORCH_LIB_DIR "${TORCH_HOME}/lib")
|
|
set(CUDA_LIB_DIR "/usr/local/cuda/lib64")
|
|
|
|
set(CXX_FLAGS -O3 -funroll-loops)
|
|
set(NVCC_FLAGS -O3
|
|
--expt-relaxed-constexpr
|
|
--use_fast_math
|
|
"--ptxas-options=-O3,-v"
|
|
--extra-device-vectorization
|
|
--threads=16)
|
|
|
|
set(TORCH_LIBS
|
|
"${TORCH_LIB_DIR}/libtorch_python.so"
|
|
"${TORCH_LIB_DIR}/libtorch_cuda.so"
|
|
"${TORCH_LIB_DIR}/libc10_cuda.so"
|
|
"${TORCH_LIB_DIR}/libtorch_cpu.so"
|
|
"${TORCH_LIB_DIR}/libtorch.so"
|
|
"${TORCH_LIB_DIR}/libc10.so"
|
|
CUDA::cudart)
|
|
|
|
set(CMAKE_CUDA_ARCHITECTURES "${ASTRAI_CUDA_ARCH}")
|
|
|
|
# Kernel registry — parallel lists of module names (.so / pybind names,
|
|
# globally unique across families) and their per-family source paths under
|
|
# kernels/. `loader.py` auto-discovers the .so files in astrai/extension/lib/,
|
|
# so this CMake registry is the single place to register a new kernel.
|
|
set(KERNEL_NAMES
|
|
attn_decode
|
|
attn_prefill
|
|
attn_paged_decode
|
|
attn_paged_prefill
|
|
rotary_emb
|
|
fp8_ops
|
|
)
|
|
set(KERNEL_SRCS
|
|
attention/decode.cu
|
|
attention/prefill.cu
|
|
attention/paged_decode.cu
|
|
attention/paged_prefill.cu
|
|
rotary/rotary_emb.cu
|
|
fp8/ops.cu
|
|
)
|
|
|
|
list(LENGTH KERNEL_NAMES _kernel_count)
|
|
math(EXPR _kernel_last "${_kernel_count} - 1")
|
|
foreach(i RANGE ${_kernel_last})
|
|
list(GET KERNEL_NAMES ${i} name)
|
|
list(GET KERNEL_SRCS ${i} src)
|
|
add_library(${name} MODULE "${CMAKE_CURRENT_SOURCE_DIR}/kernels/${src}")
|
|
|
|
target_compile_definitions(${name} PRIVATE TORCH_EXTENSION_NAME=${name})
|
|
|
|
target_include_directories(${name} PRIVATE
|
|
"${TORCH_HOME}/include"
|
|
"${TORCH_HOME}/include/torch/csrc/api/include"
|
|
"${PYTHON_INCLUDE_DIR}")
|
|
|
|
target_link_libraries(${name} PRIVATE ${TORCH_LIBS})
|
|
target_link_options(${name} PRIVATE "-Wl,-rpath,${TORCH_LIB_DIR}")
|
|
|
|
target_compile_options(${name} PRIVATE
|
|
$<$<COMPILE_LANGUAGE:CXX>:${CXX_FLAGS}>
|
|
$<$<COMPILE_LANGUAGE:CUDA>:${NVCC_FLAGS}>)
|
|
|
|
set_target_properties(${name} PROPERTIES
|
|
PREFIX ""
|
|
SUFFIX ".${PY_SOABI}.so"
|
|
LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/../astrai/extension/lib")
|
|
endforeach()
|