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// NOLINT
#pragma once
#ifdef USE_XPU
#include <c10/xpu/XPUFunctions.h>
#include <level_zero/ze_api.h>
#include <sycl/sycl.hpp>
#include <fstream>
#include <iostream>
#include <string>
#define ZE_CHECK(status) \
{ \
if (status != ZE_RESULT_SUCCESS) { \
std::stringstream ss; \
ss << "L0 runtime error: " << std::hex << std::uppercase << status; \
throw std::runtime_error(ss.str()); \
} \
}
static ze_module_handle_t create_module(
ze_context_handle_t context,
ze_device_handle_t device,
const uint8_t* binary_ptr,
size_t binary_size) {
const char* build_flags = "";
const ze_module_format_t format = ZE_MODULE_FORMAT_IL_SPIRV;
ze_module_desc_t module_description = {};
module_description.stype = ZE_STRUCTURE_TYPE_MODULE_DESC;
module_description.format = format;
module_description.inputSize = binary_size;
module_description.pInputModule = (uint8_t*)binary_ptr;
module_description.pBuildFlags = build_flags;
ze_module_build_log_handle_t buildlog = nullptr;
ze_module_handle_t module = nullptr;
auto context_initial = context;
auto device_initial = device;
auto error_no = ZE_RESULT_SUCCESS;
error_no =
zeModuleCreate(context, device, &module_description, &module, &buildlog);
if (error_no != ZE_RESULT_SUCCESS) {
size_t szLog = 0;
ZE_CHECK(zeModuleBuildLogGetString(buildlog, &szLog, nullptr));
char* strLog = (char*)malloc(szLog);
ZE_CHECK(zeModuleBuildLogGetString(buildlog, &szLog, strLog));
std::cerr << "L0 build module failed. Log: " << strLog << std::endl;
free(strLog);
}
if (buildlog) {
ZE_CHECK(zeModuleBuildLogDestroy(buildlog));
}
ZE_CHECK(error_no);
return module;
}
ze_kernel_handle_t create_function(
ze_module_handle_t module,
ze_kernel_flags_t flag,
const std::string& func_name) {
ze_kernel_handle_t kernel = nullptr;
ze_kernel_desc_t kernel_description = {};
kernel_description.stype = ZE_STRUCTURE_TYPE_KERNEL_DESC;
kernel_description.pNext = nullptr;
kernel_description.flags = flag;
kernel_description.pKernelName = func_name.c_str();
assert(module);
ZE_CHECK(zeKernelCreate(module, &kernel_description, &kernel));
return kernel;
}
static ze_module_handle_t loadModule(std::string& spv_path) {
sycl::device& sycl_device =
c10::xpu::get_raw_device(c10::xpu::current_device());
auto sycl_context =
sycl_device.get_platform().ext_oneapi_get_default_context();
auto l0_device =
sycl::get_native<sycl::backend::ext_oneapi_level_zero>(sycl_device);
auto l0_context =
sycl::get_native<sycl::backend::ext_oneapi_level_zero>(sycl_context);
std::ifstream IFS(spv_path.c_str(), std::ios::binary);
std::ostringstream OSS;
OSS << IFS.rdbuf();
std::string data(OSS.str());
return create_module(
l0_context,
l0_device,
reinterpret_cast<const uint8_t*>(data.c_str()),
data.size());
}
static std::unique_ptr<sycl::kernel> getKernel(
ze_module_handle_t l0_module,
const char* kernel_name) {
assert(l0_module);
assert(kernel_name);
auto l0_kernel =
create_function(l0_module, ZE_KERNEL_FLAG_FORCE_RESIDENCY, kernel_name);
sycl::device& sycl_device =
c10::xpu::get_raw_device(c10::xpu::current_device());
auto sycl_context =
sycl_device.get_platform().ext_oneapi_get_default_context();
auto mod = sycl::make_kernel_bundle<
sycl::backend::ext_oneapi_level_zero,
sycl::bundle_state::executable>(
{l0_module, sycl::ext::oneapi::level_zero::ownership::transfer},
sycl_context);
auto fun = sycl::make_kernel<sycl::backend::ext_oneapi_level_zero>(
{mod, l0_kernel, sycl::ext::oneapi::level_zero::ownership::transfer},
sycl_context);
return std::make_unique<sycl::kernel>(fun);
}
[[maybe_unused]] static std::unique_ptr<sycl::kernel> loadKernel(
std::string filePath,
const std::string& funcName,
uint32_t sharedMemBytes,
const std::optional<std::string>& binDir = std::nullopt) {
if (binDir) {
std::filesystem::path p1{*binDir};
std::filesystem::path p2{filePath};
filePath = (p1 / p2.filename()).string();
}
auto mod = loadModule(filePath);
return getKernel(mod, funcName.c_str());
}
[[maybe_unused]] static void launchKernel(
std::unique_ptr<sycl::kernel>& kernel_ptr,
uint32_t grid_x,
uint32_t grid_y,
uint32_t grid_z,
uint32_t num_warps,
uint32_t shared_memory,
void** params,
sycl::queue* queue_ptr) {
std::string kernel_name =
kernel_ptr->get_info<sycl::info::kernel::function_name>();
// Currently threads_per_warp is hard code to 32 from torch.compile to triton
// stack.
int threads_per_warp = 32;
uint32_t num_params = kernel_ptr->get_info<sycl::info::kernel::num_args>();
size_t global_range_x = grid_x * threads_per_warp * num_warps;
size_t global_range_y = grid_y;
size_t global_range_z = grid_z;
size_t local_range_x = num_warps * threads_per_warp;
size_t local_range_y = 1;
size_t local_range_z = 1;
sycl::range<3> global_range(global_range_z, global_range_y, global_range_x);
sycl::range<3> local_range(local_range_z, local_range_y, local_range_x);
sycl::nd_range<3> parallel_work_size(global_range, local_range);
if (shared_memory) {
// num_params from sycl info = user provided args + shared_memroy_buffer
num_params -= 1;
}
// Submit the imported kernel.
auto cgf = [&](sycl::handler& cgh) {
for (uint32_t i = 0; i < num_params; ++i) {
cgh.set_arg(i, *(static_cast<void**>(params[i])));
}
if (shared_memory > 0) {
constexpr int dimensions = 1;
using share_mem_t = sycl::local_accessor<int8_t, dimensions>;
share_mem_t local_buffer = share_mem_t(shared_memory, cgh);
cgh.set_arg(num_params, local_buffer);
cgh.parallel_for(parallel_work_size, *kernel_ptr);
} else {
cgh.parallel_for(parallel_work_size, *kernel_ptr);
}
};
auto event = queue_ptr->submit(cgf);
}
#endif
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