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ggml-sycl.cpp
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//
// MIT license
// Copyright (C) 2024 Intel Corporation
// SPDX-License-Identifier: MIT
//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
#include <algorithm>
#include <assert.h>
#include <atomic>
#include <cinttypes>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <float.h>
#include <limits>
#include <stdint.h>
#include <stdio.h>
#include <vector>
#include <cmath>
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <stdlib.h>
#include <regex>
#include <sycl/sycl.hpp>
#include <sycl/half_type.hpp>
#include "ggml-sycl.h"
#include "ggml-impl.h"
#include "ggml-backend-impl.h"
#include "ggml-sycl/backend.hpp"
#include "ggml-sycl/presets.hpp"
#include "ggml-sycl/gemm.hpp"
static bool g_sycl_loaded = false;
static ggml_sycl_device_info ggml_sycl_init() {
ggml_sycl_device_info info = {};
info.device_count = dpct::dev_mgr::instance().device_count();
if (info.device_count == 0) {
GGML_LOG_ERROR("%s: failed to initialize: %s\n", GGML_SYCL_NAME, __func__);
return info;
}
GGML_ASSERT(info.device_count <= GGML_SYCL_MAX_DEVICES);
int64_t total_vram = 0;
/* This is a bit misleading; reserved for later */
// #if defined(SYCL_USE_XMX)
// GGML_LOG_INFO("%s: SYCL_USE_XMX: yes\n", __func__);
// #else
// GGML_LOG_INFO("%s: SYCL_USE_XMX: no\n", __func__);
// #endif
for (int i = 0; i < info.device_count; ++i) {
info.devices[i].vmm = 0;
dpct::device_info prop;
SYCL_CHECK(CHECK_TRY_ERROR(dpct::get_device_info(
prop, dpct::dev_mgr::instance().get_device(i))));
info.default_tensor_split[i] = total_vram;
total_vram += prop.get_global_mem_size();
info.devices[i].cc =
100 * prop.get_major_version() + 10 * prop.get_minor_version();
info.max_work_group_sizes[i] = prop.get_max_work_group_size();
}
for (int id = 0; id < info.device_count; ++id) {
info.default_tensor_split[id] /= total_vram;
}
return info;
}
const ggml_sycl_device_info & ggml_sycl_info() {
static ggml_sycl_device_info info = ggml_sycl_init();
return info;
}
void print_device_detail(int id, sycl::device &device, std::string device_type) {
dpct::device_info prop;
SYCL_CHECK(CHECK_TRY_ERROR(
dpct::get_device_info(prop, device)));
std::string version;
version += std::to_string(prop.get_major_version());
version += ".";
version += std::to_string(prop.get_minor_version());
device_type = std::regex_replace(device_type, std::regex("ext_oneapi_"), "");
std::string name = std::string(prop.get_name());
name = std::regex_replace(name, std::regex("\\(R\\)"), "");
name = std::regex_replace(name, std::regex("\\(TM\\)"), "");
auto global_mem_size = prop.get_global_mem_size()/1000000;
GGML_LOG_INFO("|%2d|%19s|%39s|%7s|%7d|%8d|%5d|%6luM|%21s|\n", id, device_type.c_str(),
name.c_str(), version.c_str(), prop.get_max_compute_units(),
prop.get_max_work_group_size(), prop.get_max_sub_group_size(),
global_mem_size, device.get_info<sycl::info::device::driver_version>().c_str());
}
void ggml_backend_sycl_print_sycl_devices() {
GGML_SYCL_DEBUG("[SYCL] call ggml_backend_sycl_print_sycl_devices\n");
int device_count = dpct::dev_mgr::instance().device_count();
std::map<std::string, size_t> DeviceNums;
GGML_LOG_INFO("Found %d SYCL devices:\n", device_count);
GGML_LOG_INFO(
"| | | | "
" |Max | |Max |Global | |\n");
GGML_LOG_INFO(
"| | | | "
" |compute|Max work|sub |mem | |\n");
GGML_LOG_INFO(
"|ID| Device Type| "
"Name|Version|units |group |group|size | Driver version|\n");
GGML_LOG_INFO(
"|--|-------------------|---------------------------------------|------"
"-|-------|--------|-----|-------|---------------------|\n");
for (int id = 0; id < device_count; ++id) {
sycl::device device = dpct::dev_mgr::instance().get_device(id);
std::string backend_type = get_device_backend_and_type(device);
int type_id = DeviceNums[backend_type]++;
std::stringstream device_type;
device_type << "[" << backend_type << ":" << std::to_string(type_id)
<< "]";
print_device_detail(id, device, device_type.str());
}
}
static inline int get_sycl_env(const char *env_name, int default_val) {
char *user_device_string = getenv(env_name);
int user_number = default_val;
unsigned n;
if (user_device_string != NULL &&
sscanf(user_device_string, " %u", &n) == 1) {
user_number = (int)n;
} else {
user_number = default_val;
}
return user_number;
}
static void ggml_check_sycl() try {
static bool initialized = false;
if (!initialized) {
GGML_SYCL_DEBUG("[SYCL] call ggml_check_sycl\n");
g_ggml_sycl_debug = get_sycl_env("GGML_SYCL_DEBUG", 0);
GGML_LOG_INFO("GGML_SYCL_DEBUG: %d\n", g_ggml_sycl_debug);
#if defined(GGML_SYCL_FORCE_MMQ)
GGML_LOG_INFO("GGML_SYCL_FORCE_MMQ: yes\n");
#else
GGML_LOG_INFO("GGML_SYCL_FORCE_MMQ: no\n");
#endif
#if defined(GGML_SYCL_F16)
GGML_LOG_INFO("GGML_SYCL_F16: yes\n");
#else
GGML_LOG_INFO("GGML_SYCL_F16: no\n");
#endif
/* NOT REMOVE, keep it for next optimize for XMX.
#if defined(SYCL_USE_XMX)
fprintf(stderr, "%s: SYCL_USE_XMX: yes\n", __func__);
#else
fprintf(stderr, "%s: SYCL_USE_XMX: no\n", __func__);
#endif
*/
if (CHECK_TRY_ERROR(g_all_sycl_device_count =
dpct::dev_mgr::instance().device_count()) != 0) {
initialized = true;
g_sycl_loaded = false;
return;
}
GGML_ASSERT(g_all_sycl_device_count <= GGML_SYCL_MAX_DEVICES);
initialized = true;
g_sycl_loaded = true;
ggml_backend_sycl_print_sycl_devices();
}
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
/*
device_index: device index from 0 to n (continue numbers).
It is used for device select/set in SYCL backend internal data structure.
*/
inline void check_allow_gpu_index(const int device_index) {
if (device_index >= ggml_sycl_info().device_count) {
char error_buf[256];
snprintf(
error_buf,
sizeof(error_buf),
"%s error: device_index:%d is out of range: [0-%d]",
__func__,
device_index,
ggml_sycl_info().device_count - 1);
GGML_LOG_ERROR("%s\n", error_buf);
assert(false);
}
}
GGML_API void ggml_backend_sycl_get_gpu_list(int *id_list, int max_len) try {
GGML_SYCL_DEBUG("[SYCL] call ggml_backend_sycl_get_gpu_list\n");
for(int i=0;i<max_len;i++) id_list[i] = -1;
for (int i=0;i< ggml_sycl_info().device_count;i++){
if (i>=max_len) break;
id_list[i] = i;
}
return;
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
// sycl buffer
struct ggml_backend_sycl_buffer_context {
int device;
void * dev_ptr = nullptr;
queue_ptr stream;
std::string name;
ggml_backend_sycl_buffer_context(int device, void * dev_ptr, queue_ptr stream) :
device(device), dev_ptr(dev_ptr), stream(stream) {
check_allow_gpu_index(device);
name = (GGML_SYCL_NAME + std::to_string(device));
}
~ggml_backend_sycl_buffer_context() {
if (dev_ptr != nullptr) {
ggml_sycl_set_device(device);
SYCL_CHECK(CHECK_TRY_ERROR(sycl::free(dev_ptr, *stream)));
}
}
};
static const char * ggml_backend_sycl_buffer_type_get_name(ggml_backend_buffer_type_t buft);
static bool ggml_backend_buffer_is_sycl(ggml_backend_buffer_t buffer) {
return buffer->buft->iface.get_name == ggml_backend_sycl_buffer_type_get_name;
}
static void
ggml_backend_sycl_buffer_free_buffer(ggml_backend_buffer_t buffer) try {
ggml_backend_sycl_buffer_context * ctx = ( ggml_backend_sycl_buffer_context *)buffer->context;
ggml_sycl_set_device(ctx->device);
delete ctx;
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void * ggml_backend_sycl_buffer_get_base(ggml_backend_buffer_t buffer) {
ggml_backend_sycl_buffer_context * ctx = ( ggml_backend_sycl_buffer_context *)buffer->context;
return ctx->dev_ptr;
}
static void
ggml_backend_sycl_buffer_init_tensor(ggml_backend_buffer_t buffer,
ggml_tensor *tensor) try {
ggml_backend_sycl_buffer_context * ctx = (ggml_backend_sycl_buffer_context *)buffer->context;
if (tensor->view_src != NULL) {
assert(tensor->view_src->buffer->buft == buffer->buft);
return;
}
if (ggml_is_quantized(tensor->type)) {
// initialize padding to 0 to avoid possible NaN values
size_t original_size = ggml_nbytes(tensor);
size_t padded_size = ggml_backend_buft_get_alloc_size(buffer->buft, tensor);
if (padded_size > original_size && tensor->view_src == nullptr) {
SYCL_CHECK(CHECK_TRY_ERROR(ctx->stream->memset(
(char *)tensor->data + original_size, 0,
padded_size - original_size).wait()));
}
}
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void ggml_backend_sycl_buffer_set_tensor(ggml_backend_buffer_t buffer,
ggml_tensor *tensor,
const void *data, size_t offset,
size_t size) try {
ggml_backend_sycl_buffer_context * ctx = ( ggml_backend_sycl_buffer_context *)buffer->context;
ggml_sycl_set_device(ctx->device);
auto stream = &(dpct::dev_mgr::instance().get_device(ctx->device).default_queue());
SYCL_CHECK(
CHECK_TRY_ERROR(dpct::dev_mgr::instance().get_device(ctx->device).queues_wait_and_throw()));
char* host_buf = (char*)malloc(size);
memcpy(host_buf, data, size);
SYCL_CHECK(
CHECK_TRY_ERROR((*stream).memcpy((char *)tensor->data + offset, host_buf, size)
.wait()));
free(host_buf);
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void ggml_backend_sycl_buffer_get_tensor(ggml_backend_buffer_t buffer,
const ggml_tensor *tensor,
void *data, size_t offset,
size_t size) try {
ggml_backend_sycl_buffer_context * ctx = ( ggml_backend_sycl_buffer_context *)buffer->context;
ggml_sycl_set_device(ctx->device);
auto stream = dpct::dev_mgr::instance().get_device(ctx->device).default_queue();
SYCL_CHECK(CHECK_TRY_ERROR(
stream.memcpy(data, (const char *)tensor->data + offset, size)
.wait()));
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
void dev2dev_memcpy(sycl::queue &q_dst, sycl::queue &q_src, void *ptr_dst,
const void *ptr_src, size_t size) {
char *host_buf = (char *)malloc(size);
q_src.memcpy(host_buf, (const char *)ptr_src, size).wait();
q_dst.memcpy((char *)ptr_dst, host_buf, size).wait();
free(host_buf);
}
static bool
ggml_backend_sycl_buffer_cpy_tensor(ggml_backend_buffer_t buffer,
const ggml_tensor *src,
ggml_tensor *dst) try {
if (ggml_backend_buffer_is_sycl(src->buffer)) {
ggml_backend_sycl_buffer_context * src_ctx = (ggml_backend_sycl_buffer_context *)src->buffer->context;
ggml_backend_sycl_buffer_context * dst_ctx = (ggml_backend_sycl_buffer_context *)dst->buffer->context;
ggml_sycl_set_device(src_ctx->device);
/*
DPCT1009:198: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
SYCL_CHECK(CHECK_TRY_ERROR(
dpct::dev_mgr::instance().get_device(src_ctx->device).queues_wait_and_throw()));
ggml_sycl_set_device(dst_ctx->device);
/*
DPCT1009:199: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
SYCL_CHECK(CHECK_TRY_ERROR(
dpct::dev_mgr::instance().get_device(dst_ctx->device).queues_wait_and_throw()));
/*
DPCT1009:200: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
queue_ptr stream_dst = dst_ctx->stream;
queue_ptr stream_src = src_ctx->stream;
size_t size = ggml_nbytes(src);
//todo. it's dirty solutino to walkaroud known issue:device2device cross GPUs.
dev2dev_memcpy(*stream_dst, *stream_src, dst->data, src->data, size);
//todo, it's known issue：error in device2device cross GPUs. reused when the issue is fixed. DON"T remove
#if 0
SYCL_CHECK(CHECK_TRY_ERROR((*stream).memcpy(
(char *)dst->data, (const char *)src->data, size).wait()));
/*
DPCT1009:201: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
SYCL_CHECK(CHECK_TRY_ERROR(
dpct::dev_mgr::instance().get_device(dst_ctx->device).queues_wait_and_throw()));
#endif
return true;
}
return false;
GGML_UNUSED(buffer);
} catch (const sycl::exception & exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__ << ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void ggml_backend_sycl_buffer_clear(ggml_backend_buffer_t buffer,
uint8_t value) try {
ggml_backend_sycl_buffer_context * ctx = ( ggml_backend_sycl_buffer_context *)buffer->context;
ggml_sycl_set_device(ctx->device);
queue_ptr stream = ctx->stream;
SYCL_CHECK(
CHECK_TRY_ERROR(dpct::get_current_device().queues_wait_and_throw()));
SYCL_CHECK(CHECK_TRY_ERROR((*stream)
.memset(ctx->dev_ptr, value, buffer->size)
.wait()));
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static const ggml_backend_buffer_i ggml_backend_sycl_buffer_interface = {
/* .free_buffer = */ ggml_backend_sycl_buffer_free_buffer,
/* .get_base = */ ggml_backend_sycl_buffer_get_base,
/* .init_tensor = */ ggml_backend_sycl_buffer_init_tensor,
/* .memset_tensor = */ NULL,
/* .set_tensor = */ ggml_backend_sycl_buffer_set_tensor,
/* .get_tensor = */ ggml_backend_sycl_buffer_get_tensor,
/* .cpy_tensor = */ ggml_backend_sycl_buffer_cpy_tensor,
/* .clear = */ ggml_backend_sycl_buffer_clear,
/* .reset = */ NULL,
};
// sycl buffer type
struct ggml_backend_sycl_buffer_type_context {
int device;
std::string name;
// each buffer type has its own stream
queue_ptr stream = nullptr;
};
static const char * ggml_backend_sycl_buffer_type_get_name(ggml_backend_buffer_type_t buft) {
ggml_backend_sycl_buffer_type_context * ctx = (ggml_backend_sycl_buffer_type_context *)buft->context;
return ctx->name.c_str();
}
static ggml_backend_buffer_t
ggml_backend_sycl_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft,
size_t size) try {
ggml_backend_sycl_buffer_type_context * buft_ctx = (ggml_backend_sycl_buffer_type_context *)buft->context;
ggml_sycl_set_device(buft_ctx->device);
const queue_ptr stream = buft_ctx->stream;
size = std::max(size, (size_t)1); // syclMalloc returns null for size 0
void * dev_ptr;
SYCL_CHECK(CHECK_TRY_ERROR(dev_ptr = (void *)sycl::malloc_device(
size, *stream)));
if (!dev_ptr) {
GGML_LOG_ERROR("%s: can't allocate %lu Bytes of memory on device\n", __func__, size);
return nullptr;
}
ggml_backend_sycl_buffer_context * ctx = new ggml_backend_sycl_buffer_context(buft_ctx->device, dev_ptr, buft_ctx->stream);
return ggml_backend_buffer_init(buft, ggml_backend_sycl_buffer_interface, ctx, size);
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static size_t ggml_backend_sycl_buffer_type_get_alignment(ggml_backend_buffer_type_t buft) {
return 128;
GGML_UNUSED(buft);
}
static size_t ggml_backend_sycl_buffer_type_get_max_size(ggml_backend_buffer_type_t buft) {
return dpct::get_current_device().get_max_mem_alloc_size();
GGML_UNUSED(buft);
}
static size_t ggml_backend_sycl_buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
size_t size = ggml_nbytes(tensor);
int64_t ne0 = tensor->ne[0];
if (ggml_is_quantized(tensor->type)) {
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
}
return size;
GGML_UNUSED(buft);
}
static const ggml_backend_buffer_type_i ggml_backend_sycl_buffer_type_interface = {
/* .get_name = */ ggml_backend_sycl_buffer_type_get_name,
/* .alloc_buffer = */ ggml_backend_sycl_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_sycl_buffer_type_get_alignment,
/* .get_max_size = */ ggml_backend_sycl_buffer_type_get_max_size,
/* .get_alloc_size = */ ggml_backend_sycl_buffer_type_get_alloc_size,
/* .is_host = */ NULL,
};
ggml_backend_buffer_type_t ggml_backend_sycl_buffer_type(int device) {
static std::mutex mutex;
std::lock_guard<std::mutex> lock(mutex);
GGML_SYCL_DEBUG("[SYCL] call ggml_backend_sycl_buffer_type\n");
auto dev_count = ggml_backend_sycl_get_device_count();
if (device>=dev_count or device<0) {
GGML_LOG_ERROR("ggml_backend_sycl_buffer_type error: device_index:%d is out of range [0, %d], miss to call ggml_backend_sycl_set_single_device()\n",
device, dev_count-1);
GGML_ASSERT(device<dev_count);
}
static struct ggml_backend_buffer_type ggml_backend_sycl_buffer_types[GGML_SYCL_MAX_DEVICES];
static bool ggml_backend_sycl_buffer_type_initialized = false;
if (!ggml_backend_sycl_buffer_type_initialized) {
for (int i = 0; i < dev_count; i++) {
auto & device_i = dpct::dev_mgr::instance().get_device(i);
queue_ptr stream = &(device_i.default_queue());
ggml_backend_sycl_buffer_types[i] = {
/* .iface = */ ggml_backend_sycl_buffer_type_interface,
/* .device = */ ggml_backend_reg_dev_get(ggml_backend_sycl_reg(), i),
/* .context = */ new ggml_backend_sycl_buffer_type_context{i, GGML_SYCL_NAME + std::to_string(i), stream},
};
}
ggml_backend_sycl_buffer_type_initialized = true;
}
return &ggml_backend_sycl_buffer_types[device];
}
ggml_backend_buffer_type_t ggml_backend_sycl_buffer_type(ggml_backend_sycl_context * ctx) {
GGML_SYCL_DEBUG("[SYCL] call ggml_backend_sycl_buffer_type\n");
int device = ctx->device;
if (device>=ggml_sycl_info().device_count or device<0) {
GGML_LOG_ERROR("ggml_backend_sycl_buffer_type error: device_index:%d is out of range [0, %d], miss to call ggml_backend_sycl_set_single_device()\n",
device, ggml_sycl_info().device_count-1);
GGML_ASSERT(device<ggml_sycl_info().device_count);
}
static struct ggml_backend_buffer_type ggml_backend_sycl_buffer_types[GGML_SYCL_MAX_DEVICES];
static bool ggml_backend_sycl_buffer_type_initialized = false;
if (!ggml_backend_sycl_buffer_type_initialized) {
for (int i = 0; i < ggml_sycl_info().device_count; i++) {
ggml_backend_sycl_buffer_types[i] = {
/* .iface = */ ggml_backend_sycl_buffer_type_interface,
/* .device = */ nullptr,
/* .context = */ new ggml_backend_sycl_buffer_type_context{i, GGML_SYCL_NAME + std::to_string(i), ctx->stream(i, 0)},
};
}
ggml_backend_sycl_buffer_type_initialized = true;
}
return &ggml_backend_sycl_buffer_types[device];
}
// sycl split buffer
static int64_t get_row_rounding(ggml_type type, const std::array<float, GGML_SYCL_MAX_DEVICES> & tensor_split) {
int64_t min_compute_capability = INT_MAX;
int64_t max_compute_capability = INT_MIN;
for (int i = 0; i < ggml_sycl_info().device_count; ++i) {
if (tensor_split[i] < (i + 1 < ggml_sycl_info().device_count ? tensor_split[i + 1] : 1.0f)) {
if (min_compute_capability > ggml_sycl_info().devices[i].cc) {
min_compute_capability = ggml_sycl_info().devices[i].cc;
}
if (max_compute_capability < ggml_sycl_info().devices[i].cc) {
max_compute_capability = ggml_sycl_info().devices[i].cc;
}
}
}
switch(type) {
case GGML_TYPE_Q4_0:
case GGML_TYPE_Q4_1:
return max_compute_capability >= VER_GEN9 ? 128 : 64;
case GGML_TYPE_Q5_0:
case GGML_TYPE_Q5_1:
case GGML_TYPE_Q8_0:
return 64;
case GGML_TYPE_F16:
case GGML_TYPE_F32:
return 1;
case GGML_TYPE_Q2_K:
case GGML_TYPE_Q3_K:
case GGML_TYPE_Q4_K:
case GGML_TYPE_Q5_K:
case GGML_TYPE_IQ2_XXS:
case GGML_TYPE_IQ2_XS:
case GGML_TYPE_IQ2_S:
case GGML_TYPE_IQ1_S:
case GGML_TYPE_IQ1_M:
case GGML_TYPE_IQ3_XXS:
case GGML_TYPE_IQ4_XS:
case GGML_TYPE_IQ4_NL:
return max_compute_capability >= VER_GEN9 ? 128 : 64;
case GGML_TYPE_IQ3_S:
return max_compute_capability >= VER_GEN9 ? 128 : 64;
case GGML_TYPE_Q6_K:
return 64;
default:
GGML_ABORT("fatal error");
}
}
static void get_row_split(int64_t * row_low, int64_t * row_high, const ggml_tensor * tensor, const std::array<float, GGML_SYCL_MAX_DEVICES> & tensor_split, int id) {
const int64_t nrows = ggml_nrows(tensor);
const int64_t rounding = get_row_rounding(tensor->type, tensor_split);
*row_low = id == 0 ? 0 : nrows*tensor_split[id];
*row_low -= *row_low % rounding;
if (id == ggml_sycl_info().device_count - 1) {
*row_high = nrows;
} else {
*row_high = nrows*tensor_split[id + 1];
*row_high -= *row_high % rounding;
}
}
static size_t ggml_nbytes_split(const struct ggml_tensor * tensor, int nrows_split) {
static_assert(GGML_MAX_DIMS == 4, "GGML_MAX_DIMS is not 4 - update this function");
return nrows_split*ggml_row_size(tensor->type, tensor->ne[0]);
}
struct ggml_backend_sycl_split_buffer_type_context {
std::array<float, GGML_SYCL_MAX_DEVICES> tensor_split;
};
struct ggml_backend_sycl_split_buffer_context {
~ggml_backend_sycl_split_buffer_context() try {
for (ggml_tensor_extra_gpu * extra : tensor_extras) {
for (int i = 0; i < ggml_sycl_info().device_count; ++i) {
for (int64_t is = 0; is < GGML_SYCL_MAX_STREAMS; ++is) {
if (extra->events[i][is] != nullptr) {
/*
DPCT1009:206: SYCL uses exceptions to report errors and
does not use the error codes. The original code was
commented out and a warning string was inserted. You
need to rewrite this code.
*/
SYCL_CHECK(CHECK_TRY_ERROR(
dpct::destroy_event(extra->events[i][is])));
}
}
if (extra->data_device[i] != nullptr) {
/*
DPCT1009:207: SYCL uses exceptions to report errors and does
not use the error codes. The original code was commented out
and a warning string was inserted. You need to rewrite this
code.
*/
ggml_sycl_set_device(i);
SYCL_CHECK(CHECK_TRY_ERROR(sycl::free(
extra->data_device[i], *(streams[i]))));
}
}
delete extra;
}
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
std::vector<ggml_tensor_extra_gpu *> tensor_extras;
std::vector<queue_ptr> streams;
};
static void ggml_backend_sycl_split_buffer_free_buffer(ggml_backend_buffer_t buffer) {
ggml_backend_sycl_split_buffer_context * ctx = (ggml_backend_sycl_split_buffer_context *)buffer->context;
delete ctx;
}
static void * ggml_backend_sycl_split_buffer_get_base(ggml_backend_buffer_t buffer) {
// the pointers are stored in the tensor extras, this is just a dummy address and never dereferenced
return (void *)0x1000;
GGML_UNUSED(buffer);
}
static void
ggml_backend_sycl_split_buffer_init_tensor(ggml_backend_buffer_t buffer,
ggml_tensor *tensor) try {
GGML_ASSERT(tensor->view_src == nullptr); // views of split tensors are not supported
ggml_backend_sycl_split_buffer_context * ctx = (ggml_backend_sycl_split_buffer_context *)buffer->context;
ggml_backend_sycl_split_buffer_type_context * buft_ctx = (ggml_backend_sycl_split_buffer_type_context *)buffer->buft->context;
const int64_t ne0 = tensor->ne[0];
ggml_tensor_extra_gpu * extra = new ggml_tensor_extra_gpu{};
ctx->tensor_extras.push_back(extra);
ctx->streams.push_back(&(dpct::get_current_device().default_queue()));
for (int i = 0; i < ggml_sycl_info().device_count; ++i) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, buft_ctx->tensor_split, i);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
size_t size = ggml_nbytes_split(tensor, nrows_split);
const size_t original_size = size;
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
// FIXME: do not crash if SYCL Buffer alloc fails
// currently, init_tensor cannot fail, it needs to be fixed in ggml-backend first
ggml_sycl_set_device(i);
const queue_ptr stream = ctx->streams[i];
char * buf;
/*
DPCT1009:208: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
SYCL_CHECK(CHECK_TRY_ERROR(buf = (char *)sycl::malloc_device(
size, *stream)));
if (!buf) {
char err_buf[1024];
snprintf(err_buf, 1023, "%s: can't allocate %lu Bytes of memory on device\n", __func__, size);
throw std::runtime_error(err_buf);
}
// set padding to 0 to avoid possible NaN values
if (size > original_size) {
/*
DPCT1009:209: SYCL uses exceptions to report errors and does not use
the error codes. The original code was commented out and a warning
string was inserted. You need to rewrite this code.
*/
SYCL_CHECK(CHECK_TRY_ERROR(
(*stream)
.memset(buf + original_size, 0, size - original_size)
.wait()));
}
extra->data_device[i] = buf;
for (int64_t is = 0; is < GGML_SYCL_MAX_STREAMS; ++is) {
/*
DPCT1009:210: SYCL uses exceptions to report errors and does not use
the error codes. The original code was commented out and a warning
string was inserted. You need to rewrite this code.
*/
SYCL_CHECK(
CHECK_TRY_ERROR(extra->events[i][is] = new sycl::event()));
}
}
tensor->extra = extra;
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void
ggml_backend_sycl_split_buffer_set_tensor(ggml_backend_buffer_t buffer,
ggml_tensor *tensor, const void *data,
size_t offset, size_t size) try {
// split tensors must always be set in their entirety at once
GGML_ASSERT(offset == 0);
GGML_ASSERT(size == ggml_nbytes(tensor));
ggml_backend_sycl_split_buffer_context * ctx = (ggml_backend_sycl_split_buffer_context *)buffer->context;
ggml_backend_sycl_split_buffer_type_context * buft_ctx = (ggml_backend_sycl_split_buffer_type_context *)buffer->buft->context;
const int64_t ne0 = tensor->ne[0];
const size_t nb1 = tensor->nb[1];
ggml_tensor_extra_gpu * extra = (ggml_tensor_extra_gpu *)tensor->extra;
for (int i = 0; i < ggml_sycl_info().device_count; ++i) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, buft_ctx->tensor_split, i);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
const size_t offset_split = row_low*nb1;
size_t size = ggml_nbytes_split(tensor, nrows_split);
const size_t original_size = size;
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
const char * buf_host = (const char *)data + offset_split;
/*
DPCT1009:211: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
ggml_sycl_set_device(i);
const queue_ptr stream = ctx->streams[i];
SYCL_CHECK(CHECK_TRY_ERROR(
(*stream)
.memcpy(extra->data_device[i], buf_host, original_size)
.wait()));
}
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void
ggml_backend_sycl_split_buffer_get_tensor(ggml_backend_buffer_t buffer,
const ggml_tensor *tensor, void *data,
size_t offset, size_t size) try {
// split tensors must always be set in their entirety at once
GGML_ASSERT(offset == 0);
GGML_ASSERT(size == ggml_nbytes(tensor));
ggml_backend_sycl_split_buffer_context * ctx = (ggml_backend_sycl_split_buffer_context *)buffer->context;
ggml_backend_sycl_split_buffer_type_context * buft_ctx = (ggml_backend_sycl_split_buffer_type_context *)buffer->buft->context;
const int64_t ne0 = tensor->ne[0];
const size_t nb1 = tensor->nb[1];
ggml_tensor_extra_gpu * extra = (ggml_tensor_extra_gpu *)tensor->extra;
for (int i = 0; i < ggml_sycl_info().device_count; ++i) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, buft_ctx->tensor_split, i);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
const size_t offset_split = row_low*nb1;
size_t size = ggml_nbytes_split(tensor, nrows_split);
const size_t original_size = size;
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
char * buf_host = (char *)data + offset_split;
/*
DPCT1009:212: SYCL uses exceptions to report errors and does not use the
error codes. The original code was commented out and a warning string
was inserted. You need to rewrite this code.
*/
ggml_sycl_set_device(i);
const queue_ptr stream = ctx->streams[i];
SYCL_CHECK(CHECK_TRY_ERROR(
(*stream)
.memcpy(buf_host, extra->data_device[i], original_size)
.wait()));
}
}
catch (sycl::exception const &exc) {
std::cerr << exc.what() << "Exception caught at file:" << __FILE__
<< ", line:" << __LINE__ << std::endl;
std::exit(1);
}
static void ggml_backend_sycl_split_buffer_clear(ggml_backend_buffer_t buffer, uint8_t value) {
GGML_UNUSED(buffer);
GGML_UNUSED(value);
}
static struct ggml_backend_buffer_i ggml_backend_sycl_split_buffer_interface = {
/* .free_buffer = */ ggml_backend_sycl_split_buffer_free_buffer,
/* .get_base = */ ggml_backend_sycl_split_buffer_get_base,
/* .init_tensor = */ ggml_backend_sycl_split_buffer_init_tensor,
/* .memset_tensor = */ NULL,
/* .set_tensor = */ ggml_backend_sycl_split_buffer_set_tensor,
/* .get_tensor = */ ggml_backend_sycl_split_buffer_get_tensor,
/* .cpy_tensor = */ NULL,
/* .clear = */ ggml_backend_sycl_split_buffer_clear,
/* .reset = */ NULL,
};
// sycl split buffer type
static const char * ggml_backend_sycl_split_buffer_type_get_name(ggml_backend_buffer_type_t buft) {
return GGML_SYCL_NAME "_Split";
GGML_UNUSED(buft);
}
static bool ggml_backend_buffer_is_sycl_split(ggml_backend_buffer_t buffer) {
return buffer->buft->iface.get_name == ggml_backend_sycl_split_buffer_type_get_name;
}
static ggml_backend_buffer_t ggml_backend_sycl_split_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
// since we don't know the exact split after rounding, we cannot allocate the device buffers at this point
// instead, we allocate them for each tensor separately in init_tensor
// however, the size still represents the maximum cumulative size of all the device buffers after the tensors are allocated,
// as returned by get_alloc_size. this limit is enforced during tensor allocation by ggml-alloc, so it must be correct.
ggml_backend_sycl_split_buffer_context * ctx = new ggml_backend_sycl_split_buffer_context();
return ggml_backend_buffer_init(buft, ggml_backend_sycl_split_buffer_interface, ctx, size);
}
static size_t ggml_backend_sycl_split_buffer_type_get_alignment(ggml_backend_buffer_type_t buft) {
return 128;
GGML_UNUSED(buft);
}
static size_t ggml_backend_sycl_split_buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
ggml_backend_sycl_split_buffer_type_context * ctx = (ggml_backend_sycl_split_buffer_type_context *)buft->context;
size_t total_size = 0;
const int64_t ne0 = tensor->ne[0];
for (int i = 0; i < ggml_sycl_info().device_count; ++i) {
int64_t row_low, row_high;
get_row_split(&row_low, &row_high, tensor, ctx->tensor_split, i);
int64_t nrows_split = row_high - row_low;
if (nrows_split == 0) {
continue;
}
total_size += ggml_nbytes_split(tensor, nrows_split);
// pad last row to a multiple of 512 elements to avoid out-of-bounds memory accesses
if (ne0 % MATRIX_ROW_PADDING != 0) {
total_size += ggml_row_size(tensor->type, MATRIX_ROW_PADDING - ne0 % MATRIX_ROW_PADDING);
}
}
return total_size;
}
static bool ggml_backend_sycl_split_buffer_type_is_host(ggml_backend_buffer_type_t buft) {
return false;
GGML_UNUSED(buft);
}
static ggml_backend_buffer_type_i ggml_backend_sycl_split_buffer_type_interface = {
/* .get_name = */ ggml_backend_sycl_split_buffer_type_get_name,
/* .alloc_buffer = */ ggml_backend_sycl_split_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_sycl_split_buffer_type_get_alignment,
/* .get_max_size = */ NULL, // defaults to SIZE_MAX
/* .get_alloc_size = */ ggml_backend_sycl_split_buffer_type_get_alloc_size,
/* .is_host = */ ggml_backend_sycl_split_buffer_type_is_host,
};
ggml_backend_buffer_type_t ggml_backend_sycl_split_buffer_type(const float * tensor_split) {
static std::mutex mutex;
std::lock_guard<std::mutex> lock(mutex);
GGML_SYCL_DEBUG("[SYCL] call ggml_backend_sycl_split_buffer_type\n");
ggml_check_sycl();
// FIXME: this is not thread safe
static std::map<std::array<float, GGML_SYCL_MAX_DEVICES>, struct ggml_backend_buffer_type> buft_map;
std::array<float, GGML_SYCL_MAX_DEVICES> tensor_split_arr = {};
bool all_zero = tensor_split == nullptr || std::all_of(tensor_split, tensor_split + GGML_SYCL_MAX_DEVICES, [](float x) { return x == 0.0f; });
if (all_zero) {
tensor_split_arr = ggml_sycl_info().default_tensor_split;
} else {