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llama.cpp
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Add c++ wrapper for backend. 

- a backend can be create with full C++
- update cpu traits
- update cpu_repack
- update cpu_amx to use it.
- extract GGML_LOG
- correct extra_buffer register order for GPU
This commit is contained in:
Djip007 2025-12-21 10:16:01 +01:00
parent 9e2e2198b0
commit c34d053d0a
13 changed files with 901 additions and 199 deletions
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2
ggml/include/ggml.h
View File

@ -705,7 +705,7 @@ extern "C" {
typedef uint8_t ggml_guid[16];
typedef ggml_guid * ggml_guid_t;
GGML_API bool ggml_guid_matches(ggml_guid_t guid_a, ggml_guid_t guid_b);
GGML_API bool ggml_guid_matches(const ggml_guid * guid_a, const ggml_guid * guid_b);
// misc

2
ggml/src/CMakeLists.txt
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@ -200,6 +200,8 @@ add_library(ggml-base
ggml.cpp
ggml-alloc.c
ggml-backend.cpp
ggml_cpp_wrapper.cpp
ggml_cpp_wrapper.h
ggml-opt.cpp
ggml-threading.cpp
ggml-threading.h

2
ggml/src/ggml-backend-impl.h
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@ -120,7 +120,7 @@ extern "C" {
};
struct ggml_backend {
ggml_guid_t guid;
const ggml_guid_t guid;
struct ggml_backend_i iface;
ggml_backend_dev_t device;
void * context;

132
ggml/src/ggml-cpu/amx/amx.cpp
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@ -35,111 +35,52 @@ class tensor_traits : public ggml::cpu::tensor_traits {
}
};
static ggml::cpu::tensor_traits * get_tensor_traits(ggml_backend_buffer_t, struct ggml_tensor *) {
static ggml::cpu::tensor_traits * get_tensor_traits(struct ggml_tensor *) {
static tensor_traits traits;
return &traits;
}
} // namespace ggml::cpu::amx
// AMX buffer interface
static void ggml_backend_amx_buffer_free_buffer(ggml_backend_buffer_t buffer) {
free(buffer->context);
}
namespace ggml::cpu::amx {
static void * ggml_backend_amx_buffer_get_base(ggml_backend_buffer_t buffer) {
return (void *) (buffer->context);
}
// AMX buffer
class buffer : public ggml::cpu::buffer {
public:
buffer(std::size_t size) : ggml::cpu::buffer(size) { }
static enum ggml_status ggml_backend_amx_buffer_init_tensor(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor) {
tensor->extra = (void *) ggml::cpu::amx::get_tensor_traits(buffer, tensor);
virtual ~buffer() { }
GGML_UNUSED(buffer);
return GGML_STATUS_SUCCESS;
}
static void ggml_backend_amx_buffer_memset_tensor(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor,
uint8_t value, size_t offset, size_t size) {
memset((char *) tensor->data + offset, value, size);
GGML_UNUSED(buffer);
}
static void ggml_backend_amx_buffer_set_tensor(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor,
const void * data, size_t offset, size_t size) {
if (qtype_has_amx_kernels(tensor->type)) {
GGML_LOG_DEBUG("%s: amx repack tensor %s of type %s\n", __func__, tensor->name, ggml_type_name(tensor->type));
ggml_backend_amx_convert_weight(tensor, data, offset, size);
} else {
memcpy((char *) tensor->data + offset, data, size);
ggml_status init_tensor(ggml_tensor& tensor) override {
tensor->extra = (void *) ggml::cpu::amx::get_tensor_traits(&tensor);
return GGML_STATUS_SUCCESS;
}
GGML_UNUSED(buffer);
}
/*
// need to figure what we need to do with buffer->extra.
static void ggml_backend_amx_buffer_get_tensor(ggml_backend_buffer_t buffer, const struct ggml_tensor * tensor, void * data, size_t offset, size_t size) {
GGML_ASSERT(!qtype_has_amx_kernels(tensor->type));
memcpy(data, (const char *)tensor->data + offset, size);
GGML_UNUSED(buffer);
}
static bool ggml_backend_amx_buffer_cpy_tensor(ggml_backend_buffer_t buffer, const struct ggml_tensor * src, struct ggml_tensor * dst) {
if (ggml_backend_buffer_is_host(src->buffer)) {
if (qtype_has_amx_kernels(src->type)) {
ggml_backend_amx_convert_weight(dst, src->data, 0, ggml_nbytes(dst));
void set_tensor(ggml_tensor & tensor, const void * data, std::size_t offset, std::size_t size) override {
if (qtype_has_amx_kernels(tensor.type)) {
GGML_LOG_DEBUG("%s: amx repack tensor %s of type %s\n", __func__, tensor.name, ggml_type_name(tensor.type));
ggml_backend_amx_convert_weight(&tensor, data, offset, size);
} else {
memcpy(dst->data, src->data, ggml_nbytes(src));
memcpy((char *) tensor.data + offset, data, size);
}
return true;
}
return false;
GGML_UNUSED(buffer);
}
*/
static void ggml_backend_amx_buffer_clear(ggml_backend_buffer_t buffer, uint8_t value) {
memset(buffer->context, value, buffer->size);
}
static ggml_backend_buffer_i ggml_backend_amx_buffer_interface = {
/* .free_buffer = */ ggml_backend_amx_buffer_free_buffer,
/* .get_base = */ ggml_backend_amx_buffer_get_base,
/* .init_tensor = */ ggml_backend_amx_buffer_init_tensor,
/* .memset_tensor = */ ggml_backend_amx_buffer_memset_tensor,
/* .set_tensor = */ ggml_backend_amx_buffer_set_tensor,
/* .get_tensor = */ nullptr,
/* .cpy_tensor = */ nullptr,
/* .clear = */ ggml_backend_amx_buffer_clear,
/* .reset = */ nullptr,
};
static const char * ggml_backend_amx_buffer_type_get_name(ggml_backend_buffer_type_t buft) {
return "AMX";
class extra_buffer_type : ggml::cpu::extra_buffer_type {
GGML_UNUSED(buft);
}
static ggml_backend_buffer_t ggml_backend_amx_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
void * data = ggml_aligned_malloc(size);
if (data == NULL) {
fprintf(stderr, "%s: failed to allocate buffer of size %zu\n", __func__, size);
return NULL;
const std::string& get_name() override {
static const std::string name {"AMX"};
return name;
}
return ggml_backend_buffer_init(buft, ggml_backend_amx_buffer_interface, data, size);
}
ggml::cpp::backend::buffer* alloc_buffer(std::size_t size) override {
return new buffer(size);
}
static size_t ggml_backend_amx_buffer_type_get_alignment(ggml_backend_buffer_type_t buft) {
return TENSOR_ALIGNMENT;
std::size_t get_alloc_size(const ggml_tensor& tensor) override {
return ggml_backend_amx_get_alloc_size(&tensor);
}
GGML_UNUSED(buft);
}
namespace ggml::cpu::amx {
class extra_buffer_type : ggml::cpu::extra_buffer_type {
bool supports_op(ggml_backend_dev_t, const struct ggml_tensor * op) override {
if (op->op != GGML_OP_MUL_MAT) {
return false;
@ -198,12 +139,6 @@ class extra_buffer_type : ggml::cpu::extra_buffer_type {
};
} // namespace ggml::cpu::amx
static size_t ggml_backend_amx_buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
return ggml_backend_amx_get_alloc_size(tensor);
GGML_UNUSED(buft);
}
#define ARCH_GET_XCOMP_PERM 0x1022
#define ARCH_REQ_XCOMP_PERM 0x1023
#define XFEATURE_XTILECFG 17
@ -224,24 +159,11 @@ static bool ggml_amx_init() {
}
ggml_backend_buffer_type_t ggml_backend_amx_buffer_type() {
static struct ggml_backend_buffer_type ggml_backend_buffer_type_amx = {
/* .iface = */ {
/* .get_name = */ ggml_backend_amx_buffer_type_get_name,
/* .alloc_buffer = */ ggml_backend_amx_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_amx_buffer_type_get_alignment,
/* .get_max_size = */ nullptr, // defaults to SIZE_MAX
/* .get_alloc_size = */ ggml_backend_amx_buffer_type_get_alloc_size,
/* .is_host = */ nullptr,
},
/* .device = */ ggml_backend_reg_dev_get(ggml_backend_cpu_reg(), 0),
/* .context = */ new ggml::cpu::amx::extra_buffer_type(),
};
static auto* buffer_type = ggml::cpu::c_wrapper(new ggml::cpu::amx::extra_buffer_type());
if (!ggml_amx_init()) {
return nullptr;
}
return &ggml_backend_buffer_type_amx;
return buffer_type;
}
#endif // defined(__AMX_INT8__) && defined(__AVX512VNNI__)

84
ggml/src/ggml-cpu/repack.cpp
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@ -4720,54 +4720,42 @@ static const ggml::cpu::tensor_traits * ggml_repack_get_optimal_repack_type(cons
return nullptr;
}
static enum ggml_status ggml_backend_cpu_repack_buffer_init_tensor(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor) {
tensor->extra = (void *) const_cast<ggml::cpu::tensor_traits *>(ggml_repack_get_optimal_repack_type(tensor));
namespace ggml::cpu::repack {
GGML_UNUSED(buffer);
return GGML_STATUS_SUCCESS;
}
class buffer : public ggml::cpu::buffer {
public:
buffer(std::size_t size) : ggml::cpu::buffer(size) { }
static void ggml_backend_cpu_repack_buffer_set_tensor(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor,
const void * data, size_t offset, size_t size) {
GGML_ASSERT(offset == 0);
GGML_ASSERT(size == ggml_nbytes(tensor));
virtual ~buffer() { }
auto tensor_traits = (ggml::cpu::repack::tensor_traits_base *) tensor->extra;
auto OK = tensor_traits->repack(tensor, data, size);
GGML_ASSERT(OK == 0);
GGML_UNUSED(buffer);
}
static const char * ggml_backend_cpu_repack_buffer_type_get_name(ggml_backend_buffer_type_t buft) {
return "CPU_REPACK";
GGML_UNUSED(buft);
}
static ggml_backend_buffer_t ggml_backend_cpu_repack_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
ggml_backend_buffer_t buffer = ggml_backend_buft_alloc_buffer(ggml_backend_cpu_buffer_type(), size);
if (buffer == nullptr) {
return nullptr;
ggml_status init_tensor(ggml_tensor & tensor) override {
tensor.extra = (void *) const_cast<ggml::cpu::tensor_traits *>(ggml_repack_get_optimal_repack_type(&tensor));
return GGML_STATUS_SUCCESS;
}
buffer->buft = buft;
buffer->iface.init_tensor = ggml_backend_cpu_repack_buffer_init_tensor;
buffer->iface.set_tensor = ggml_backend_cpu_repack_buffer_set_tensor;
buffer->iface.get_tensor = nullptr;
buffer->iface.cpy_tensor = nullptr;
return buffer;
}
void set_tensor(ggml_tensor & tensor, const void * data, std::size_t offset, std::size_t size) override {
GGML_ASSERT(offset == 0);
GGML_ASSERT(size == ggml_nbytes(&tensor));
static size_t ggml_backend_cpu_repack_buffer_type_get_alignment(ggml_backend_buffer_type_t buft) {
return TENSOR_ALIGNMENT;
auto tensor_traits = (ggml::cpu::repack::tensor_traits_base *) tensor.extra;
auto OK = tensor_traits->repack(&tensor, data, size);
GGML_UNUSED(buft);
}
GGML_ASSERT(OK == 0);
}
};
class extra_buffer_type : public ggml::cpu::extra_buffer_type {
public:
const std::string& get_name() override {
static const std::string name {"CPU_REPACK"};
return name;
}
ggml::cpp::backend::buffer* alloc_buffer(std::size_t size) override {
return new buffer(size);
}
namespace ggml::cpu::repack {
class extra_buffer_type : ggml::cpu::extra_buffer_type {
bool supports_op(ggml_backend_dev_t, const struct ggml_tensor * op) override {
if ( op->op == GGML_OP_MUL_MAT &&
op->src[0]->buffer &&
@ -4816,18 +4804,6 @@ class extra_buffer_type : ggml::cpu::extra_buffer_type {
} // namespace ggml::cpu::repack
ggml_backend_buffer_type_t ggml_backend_cpu_repack_buffer_type(void) {
static struct ggml_backend_buffer_type ggml_backend_cpu_buffer_type_repack = {
/* .iface = */ {
/* .get_name = */ ggml_backend_cpu_repack_buffer_type_get_name,
/* .alloc_buffer = */ ggml_backend_cpu_repack_buffer_type_alloc_buffer,
/* .get_alignment = */ ggml_backend_cpu_repack_buffer_type_get_alignment,
/* .get_max_size = */ nullptr, // defaults to SIZE_MAX
/* .get_alloc_size = */ nullptr, // defaults to ggml_nbytes
/* .is_host = */ nullptr,
},
/* .device = */ ggml_backend_reg_dev_get(ggml_backend_cpu_reg(), 0),
/* .context = */ new ggml::cpu::repack::extra_buffer_type(),
};
return &ggml_backend_cpu_buffer_type_repack;
static auto* buffer_type = ggml::cpu::c_wrapper(new ggml::cpu::repack::extra_buffer_type());
return buffer_type;
}

74
ggml/src/ggml-cpu/traits.cpp
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@ -2,11 +2,85 @@
#include "ggml-backend-impl.h"
#include "ggml-backend.h"
#include "ggml-cpu.h"
#include <new>
namespace ggml::cpu {
buffer::buffer(std::size_t size) : m_size(size) {
m_data = new (std::align_val_t(32)) uint8_t[m_size];
GGML_ASSERT(m_data);
}
buffer::~buffer() {
delete [] m_data;
}
void* buffer::get_base() {
return m_data;
}
void buffer::memset_tensor(ggml_tensor & tensor, uint8_t value, std::size_t offset, std::size_t size) {
GGML_ASSERT(value == 0);
memset((uint8_t *) tensor.data + offset, value, size);
}
void buffer::get_tensor(const ggml_tensor &, void *, std::size_t, std::size_t size) {
GGML_ASSERT(size == 0);
}
void buffer::clear(uint8_t value) {
memset(m_data, value, m_size);
}
tensor_traits::~tensor_traits() {}
extra_buffer_type::~extra_buffer_type() {}
namespace {
const char *buffer_type_get_name (ggml_backend_buffer_type_t buft) {
auto& ctx = *((extra_buffer_type*) (buft->context));
return ctx.get_name().c_str();
}
std::size_t buffer_type_get_alignment (ggml_backend_buffer_type_t buft) {
auto& ctx = *((extra_buffer_type*) (buft->context));
return ctx.get_alignment();
}
std::size_t buffer_type_get_max_size (ggml_backend_buffer_type_t buft) {
auto& ctx = *((extra_buffer_type*) (buft->context));
return ctx.get_max_size();
}
std::size_t buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
auto& ctx = *((extra_buffer_type*) (buft->context));
return ctx.get_alloc_size(*tensor);
}
bool buffer_type_is_host(ggml_backend_buffer_type_t /*buft*/) {
return false;
}
ggml_backend_buffer_t buffer_type_alloc_buffer (ggml_backend_buffer_type_t buft, std::size_t size) {
auto& ctx = *((extra_buffer_type*) (buft->context));
return c_wrapper(buft, ctx.alloc_buffer(size), size);
}
}
ggml_backend_buffer_type_t c_wrapper(extra_buffer_type* ctx) {
if (!ctx) { return nullptr; }
return new ggml_backend_buffer_type {
/* .iface = */ {
/* .get_name = */ buffer_type_get_name,
/* .alloc_buffer = */ buffer_type_alloc_buffer,
/* .get_alignment = */ buffer_type_get_alignment,
/* .get_max_size = */ buffer_type_get_max_size,
/* .get_alloc_size = */ buffer_type_get_alloc_size,
/* .is_host = */ buffer_type_is_host,
},
/* .device = */ ggml_backend_reg_dev_get(ggml_backend_cpu_reg(), 0),
/* .context = */ ctx,
};
}
} // namespace ggml::cpu
bool ggml_cpu_extra_compute_forward(struct ggml_compute_params * params, struct ggml_tensor * op) {

27
ggml/src/ggml-cpu/traits.h
View File

@ -4,7 +4,9 @@
#include "ggml.h"
#ifdef __cplusplus
# include "ggml_cpp_wrapper.h"
# include <vector>
# include <string>
extern "C" {
#endif
@ -24,12 +26,37 @@ class tensor_traits {
virtual bool compute_forward(struct ggml_compute_params * params, struct ggml_tensor * op) = 0;
};
// a simple buffer for cpu
class buffer : public ggml::cpp::backend::buffer {
public:
buffer(std::size_t size);
virtual ~buffer();
void* get_base() override;
void memset_tensor(ggml_tensor & tensor, uint8_t value, std::size_t offset, std::size_t size) override;
void get_tensor(const ggml_tensor &, void *, std::size_t, std::size_t size) override;
void clear(uint8_t value) override;
protected:
const std::size_t m_size;
uint8_t* m_data;
};
class extra_buffer_type {
public:
virtual ~extra_buffer_type();
// the base buffer_type fct
virtual const std::string& get_name() = 0;
virtual ggml::cpp::backend::buffer* alloc_buffer(std::size_t size) = 0;
virtual std::size_t get_alignment() { return TENSOR_ALIGNMENT; }
virtual std::size_t get_max_size() { return SIZE_MAX; }
virtual std::size_t get_alloc_size(const ggml_tensor& tensor) { return ggml_nbytes(&tensor); }
// the extra fct
virtual bool supports_op(ggml_backend_dev_t dev, const struct ggml_tensor * op) = 0;
virtual tensor_traits * get_tensor_traits(const struct ggml_tensor * op) = 0;
};
ggml_backend_buffer_type_t c_wrapper(extra_buffer_type* ctx);
} // namespace ggml::cpu
// implemented in ggml-cpu.cpp.

35
ggml/src/ggml-impl.h
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@ -4,6 +4,7 @@
#include "ggml.h"
#include "gguf.h"
#include "ggml-log.h"
#include <assert.h>
#include <math.h>
@ -105,40 +106,6 @@ static inline bool ggml_impl_is_view(const struct ggml_tensor * t) {
static inline float ggml_compute_softplus_f32(float input) {
return (input > 20.0f) ? input : logf(1 + expf(input));
}
//
// logging
//
GGML_ATTRIBUTE_FORMAT(2, 3)
GGML_API void ggml_log_internal (enum ggml_log_level level, const char * format, ...);
GGML_API void ggml_log_callback_default(enum ggml_log_level level, const char * text, void * user_data);
#define GGML_LOG(...) ggml_log_internal(GGML_LOG_LEVEL_NONE , __VA_ARGS__)
#define GGML_LOG_INFO(...) ggml_log_internal(GGML_LOG_LEVEL_INFO , __VA_ARGS__)
#define GGML_LOG_WARN(...) ggml_log_internal(GGML_LOG_LEVEL_WARN , __VA_ARGS__)
#define GGML_LOG_ERROR(...) ggml_log_internal(GGML_LOG_LEVEL_ERROR, __VA_ARGS__)
#define GGML_LOG_DEBUG(...) ggml_log_internal(GGML_LOG_LEVEL_DEBUG, __VA_ARGS__)
#define GGML_LOG_CONT(...) ggml_log_internal(GGML_LOG_LEVEL_CONT , __VA_ARGS__)
#define GGML_DEBUG 0
#if (GGML_DEBUG >= 1)
#define GGML_PRINT_DEBUG(...) GGML_LOG_DEBUG(__VA_ARGS__)
#else
#define GGML_PRINT_DEBUG(...)
#endif
#if (GGML_DEBUG >= 5)
#define GGML_PRINT_DEBUG_5(...) GGML_LOG_DEBUG(__VA_ARGS__)
#else
#define GGML_PRINT_DEBUG_5(...)
#endif
#if (GGML_DEBUG >= 10)
#define GGML_PRINT_DEBUG_10(...) GGML_LOG_DEBUG(__VA_ARGS__)
#else
#define GGML_PRINT_DEBUG_10(...)
#endif
// tensor params

48
ggml/src/ggml-log.h Normal file
View File

@ -0,0 +1,48 @@
#pragma once
#include "ggml.h"
// GGML internal header
#ifdef __cplusplus
extern "C" {
#endif
//
// logging: implemented in ggml.c
//
GGML_ATTRIBUTE_FORMAT(2, 3)
GGML_API void ggml_log_internal (enum ggml_log_level level, const char * format, ...);
GGML_API void ggml_log_callback_default(enum ggml_log_level level, const char * text, void * user_data);
#define GGML_LOG(...) ggml_log_internal(GGML_LOG_LEVEL_NONE , __VA_ARGS__)
#define GGML_LOG_INFO(...) ggml_log_internal(GGML_LOG_LEVEL_INFO , __VA_ARGS__)
#define GGML_LOG_WARN(...) ggml_log_internal(GGML_LOG_LEVEL_WARN , __VA_ARGS__)
#define GGML_LOG_ERROR(...) ggml_log_internal(GGML_LOG_LEVEL_ERROR, __VA_ARGS__)
#define GGML_LOG_DEBUG(...) ggml_log_internal(GGML_LOG_LEVEL_DEBUG, __VA_ARGS__)
#define GGML_LOG_CONT(...) ggml_log_internal(GGML_LOG_LEVEL_CONT , __VA_ARGS__)
#define GGML_DEBUG 0
#if (GGML_DEBUG >= 1)
#define GGML_PRINT_DEBUG(...) GGML_LOG_DEBUG(__VA_ARGS__)
#else
#define GGML_PRINT_DEBUG(...)
#endif
#if (GGML_DEBUG >= 5)
#define GGML_PRINT_DEBUG_5(...) GGML_LOG_DEBUG(__VA_ARGS__)
#else
#define GGML_PRINT_DEBUG_5(...)
#endif
#if (GGML_DEBUG >= 10)
#define GGML_PRINT_DEBUG_10(...) GGML_LOG_DEBUG(__VA_ARGS__)
#else
#define GGML_PRINT_DEBUG_10(...)
#endif
#ifdef __cplusplus
}
#endif

2
ggml/src/ggml.c
View File

@ -492,7 +492,7 @@ void ggml_fp32_to_bf16_row(const float * x, ggml_bf16_t * y, int64_t n) {
}
}
bool ggml_guid_matches(ggml_guid_t guid_a, ggml_guid_t guid_b) {
bool ggml_guid_matches(const ggml_guid * guid_a, const ggml_guid * guid_b) {
return memcmp(guid_a, guid_b, sizeof(ggml_guid)) == 0;
}

532
ggml/src/ggml_cpp_wrapper.cpp Normal file
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@ -0,0 +1,532 @@
#include "ggml_cpp_wrapper.h"
#include "ggml-backend-impl.h"
#include "ggml.h"
#include <cstdlib>
#include <map>
#include <memory>
namespace ggml::cpp::backend {
// TODO: voir si on ne cree pas une fontion static plutot que friend.
ggml_backend_buffer_type_t* backend_dev_get_extra_bufts(ggml_backend_dev_t device) {
auto& ctx = *((ggml::cpp::backend::device*) (device->context));
if (ctx.m_ggml_extra_buffers_type.size() == 0) { // need init of extra buffer wrappers
for (auto* buft : ctx.m_extra_buffers_type) {
auto* c_buft = c_wrapper(device, buft);
ctx.m_ggml_extra_buffers_type.push_back(c_buft);
}
ctx.m_ggml_extra_buffers_type.push_back(nullptr);
}
return ctx.m_ggml_extra_buffers_type.data();
}
namespace { // unnamed namespace
//=========================================================
// les wrappper pour ggml_backend_buffer
void buffer_free_buffer(ggml_backend_buffer_t buf) {
auto* ctx = (ggml::cpp::backend::buffer*) (buf->context);
delete ctx;
// delete buf; NO => deleted by the core.
}
void * buffer_get_base(ggml_backend_buffer_t buf) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
return ctx.get_base();
}
ggml_status buffer_init_tensor(ggml_backend_buffer_t buf, ggml_tensor * tensor) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
return ctx.init_tensor(*tensor);
}
void buffer_memset_tensor(ggml_backend_buffer_t buf, ggml_tensor * tensor, uint8_t value, size_t offset, size_t size) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
ctx.memset_tensor(*tensor, value, offset, size);
}
void buffer_set_tensor(ggml_backend_buffer_t buf, ggml_tensor * tensor, const void * data, size_t offset, size_t size) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
ctx.set_tensor(*tensor, data, offset, size);
}
void buffer_get_tensor(ggml_backend_buffer_t buf, const ggml_tensor * tensor, void * data, size_t offset, size_t size) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
ctx.get_tensor(*tensor, data, offset, size);
}
bool buffer_cpy_tensor(ggml_backend_buffer_t buf, const ggml_tensor * src, ggml_tensor * dst) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
return ctx.cpy_tensor(*src, *dst);
}
void buffer_clear(ggml_backend_buffer_t buf, uint8_t value) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
ctx.clear(value);
}
void buffer_reset(ggml_backend_buffer_t buf) {
auto& ctx = *((ggml::cpp::backend::buffer*) (buf->context));
ctx.reset();
}
//=========================================================
// wrapppers for ggml_backend_buffer_type
const char *buffer_type_get_name (ggml_backend_buffer_type_t buft) {
auto& ctx = *((ggml::cpp::backend::buffer_type*) (buft->context));
return ctx.get_name().c_str();
}
std::size_t buffer_type_get_alignment (ggml_backend_buffer_type_t buft) {
auto& ctx = *((ggml::cpp::backend::buffer_type*) (buft->context));
return ctx.get_alignment();
}
std::size_t buffer_type_get_max_size (ggml_backend_buffer_type_t buft) {
auto& ctx = *((ggml::cpp::backend::buffer_type*) (buft->context));
return ctx.get_max_size();
}
std::size_t buffer_type_get_alloc_size(ggml_backend_buffer_type_t buft, const ggml_tensor * tensor) {
auto& ctx = *((ggml::cpp::backend::buffer_type*) (buft->context));
return ctx.get_alloc_size(*tensor);
}
bool buffer_type_is_host (ggml_backend_buffer_type_t buft) {
auto& ctx = *((ggml::cpp::backend::buffer_type*) (buft->context));
return ctx.is_host();
}
ggml_backend_buffer_t buffer_type_alloc_buffer (ggml_backend_buffer_type_t buft, std::size_t size) {
auto& ctx = *((ggml::cpp::backend::buffer_type*) (buft->context));
return c_wrapper(buft, ctx.alloc_buffer(size), size);
}
//=========================================================
// wrapppers for ggml_backend
const char * backend_get_name(ggml_backend_t bkd) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
return ctx.get_name().c_str();
}
void backend_free(ggml_backend_t backend) {
auto* ctx = (ggml::cpp::backend::backend*) (backend->context);
delete ctx;
delete backend;
}
void backend_set_tensor_async(ggml_backend_t bkd, ggml_tensor * tensor, const void * data, std::size_t offset, std::size_t size) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
ctx.set_tensor_async(*tensor, data, offset, size);
}
void backend_get_tensor_async(ggml_backend_t bkd, const ggml_tensor * tensor, void * data, std::size_t offset, std::size_t size) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
ctx.get_tensor_async(*tensor, data, offset, size);
}
bool backend_cpy_tensor_async(ggml_backend_t backend_src, ggml_backend_t backend_dst, const ggml_tensor * src, ggml_tensor * dst) {
auto& ctx = *((ggml::cpp::backend::backend*) (backend_dst->context));
return ctx.cpy_tensor_async(backend_src, *src, *dst);
}
void backend_synchronize(ggml_backend_t bkd) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
ctx.synchronize();
}
enum ggml_status backend_graph_compute(ggml_backend_t bkd, ggml_cgraph * cgraph) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
return ctx.graph_compute(*cgraph);
}
void backend_event_record(ggml_backend_t bkd, ggml_backend_event_t evt) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
ctx.event_record(*((event*) evt));
}
void backend_event_wait (ggml_backend_t bkd, ggml_backend_event_t evt) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
ctx.event_wait(*((event*) evt));
}
void backend_set_n_threads(ggml_backend_t bkd, int n_threads) {
auto& ctx = *((ggml::cpp::backend::backend*) (bkd->context));
ctx.set_n_threads(n_threads);
}
//=========================================================
// wrapppers for ggml_backend_device
const char * device_get_name(ggml_backend_dev_t dev) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return ctx.get_name().c_str();
}
const char * device_get_description(ggml_backend_dev_t dev) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return ctx.get_description().c_str();
}
void device_get_memory(ggml_backend_dev_t dev, std::size_t * free, std::size_t * total) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
ctx.get_memory(*free, *total);
}
enum ggml_backend_dev_type device_get_type(ggml_backend_dev_t dev) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return ctx.get_type();
}
void device_get_props(ggml_backend_dev_t dev, struct ggml_backend_dev_props * props) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
props->name = ctx.get_name().c_str();
props->description = ctx.get_description().c_str();
ctx.get_memory(props->memory_free, props->memory_total);
props->type = ctx.get_type();
props->caps.async = ctx.caps_async();
props->caps.host_buffer = ctx.caps_host_buffer();
props->caps.buffer_from_host_ptr = ctx.caps_buffer_from_host_ptr();
props->caps.events = ctx.caps_events();
}
ggml_backend_t device_init_backend(ggml_backend_dev_t dev, const char * params) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return c_wrapper(dev, &ctx.init_backend(params?params:""));
}
ggml_backend_buffer_type_t device_get_buffer_type(ggml_backend_dev_t dev) {
// Note: nothing to delete it.
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return c_wrapper(dev, &ctx.get_buffer_type());
}
ggml_backend_buffer_type_t device_get_host_buffer_type(ggml_backend_dev_t dev) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
auto* bft = ctx.get_host_buffer_type();
if (bft) {
return c_wrapper(dev, bft);
}
return nullptr;
}
ggml_backend_buffer_t device_buffer_from_host_ptr(ggml_backend_dev_t dev, void * ptr, std::size_t size, std::size_t max_tensor_size) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
auto* bft = ctx.get_from_host_ptr_buffer_type();
if (!bft) { return nullptr; }
auto* buf = bft->register_buffer(ptr, size, max_tensor_size);
if (!buf) { return nullptr; }
// comment / ou memoriser ce wrapper, il n'y a pas de "delete"
auto * ggml_buf_type = c_wrapper(dev, bft);
return c_wrapper(ggml_buf_type, buf, size);
}
bool device_supports_op(ggml_backend_dev_t dev, const ggml_tensor * op) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return ctx.supports_op(*op);
}
bool device_supports_buft(ggml_backend_dev_t dev, ggml_backend_buffer_type_t buft) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return ctx.supports_buft(buft /*->context*/);
}
bool device_offload_op(ggml_backend_dev_t dev, const ggml_tensor * op) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
return ctx.offload_op(*op);
}
ggml_backend_event_t device_event_new (ggml_backend_dev_t dev) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
auto* evt = ctx.event_new();
if (!evt) { return nullptr; }
return new ggml_backend_event {
dev,
evt,
};
}
void device_event_free(ggml_backend_dev_t /*dev*/, ggml_backend_event_t evt_c) {
auto* evt_cpp = (event*)(evt_c->context);
delete evt_cpp;
delete evt_c;
}
void device_event_synchronize(ggml_backend_dev_t dev, ggml_backend_event_t evt_c) {
auto& ctx = *((ggml::cpp::backend::device*) (dev->context));
auto* evt_cpp = (event*)(evt_c->context);
ctx.event_synchronize(*evt_cpp);
}
//=========================================================
// wrapppers for ggml_backend_reg
const char * reg_get_name(ggml_backend_reg_t reg) {
auto& ctx = *((ggml::cpp::backend::reg*) (reg->context));
return ctx.get_name().c_str();
}
std::size_t reg_get_device_count(ggml_backend_reg_t reg) {
auto& ctx = *((ggml::cpp::backend::reg*) (reg->context));
return ctx.get_device_count();
}
ggml_backend_dev_t reg_get_device(ggml_backend_reg_t reg, std::size_t index) {
auto& ctx = *((ggml::cpp::backend::reg*) (reg->context));
return c_wrapper(reg, &ctx.get_device(index));
}
void * reg_get_proc_address(ggml_backend_reg_t /*reg*/, const char * cname) {
const auto name = std::string(cname);
if (name == "ggml_backend_set_n_threads") {
return (void *)backend_set_n_threads;
}
if (name == "ggml_backend_dev_get_extra_bufts") {
return (void*) backend_dev_get_extra_bufts;
}
return nullptr;
}
}
// les destructeurs...
buffer::~buffer() {}
buffer_type::~buffer_type() {}
event::~event() {}
backend::backend(device& dev): m_device(dev) {}
backend::~backend() { }
device::~device() {
// TODO: il faut detruire des wrapper des buffer_type???
}
reg::~reg() {}
// non virtual fct:
void device::register_extra_buffer_type(buffer_type* buft) {
GGML_ASSERT(m_ggml_extra_buffers_type.size() == 0); // pas encore initialisé!
m_extra_buffers_type.push_back(buft);
}
//=========================================================
// the wrappers
ggml_backend_buffer_t c_wrapper(ggml_backend_buffer_type_t buft, buffer* ctx, std::size_t size) {
if (!ctx) { return nullptr; }
return new ggml_backend_buffer {
/* .interface = */ {
/* .free_buffer = */ buffer_free_buffer,
/* .get_base = */ buffer_get_base,
/* .init_tensor = */ buffer_init_tensor,
/* .memset_tensor = */ buffer_memset_tensor,
/* .set_tensor = */ buffer_set_tensor,
/* .get_tensor = */ buffer_get_tensor,
/* .cpy_tensor = */ buffer_cpy_tensor,
/* .clear = */ buffer_clear,
/* .reset = */ buffer_reset,
},
/* .buft = */ buft,
/* .context = */ ctx,
/* .size = */ size,
/* .usage = */ GGML_BACKEND_BUFFER_USAGE_ANY
};
}
struct buffer_type_deleter {
void operator()(ggml_backend_buffer_type* c_buffer_type) {
delete (c_buffer_type);
}
};
typedef std::unique_ptr<ggml_backend_buffer_type, buffer_type_deleter> c_buffer_type_ptr;
ggml_backend_buffer_type_t c_wrapper(ggml_backend_dev_t device, buffer_type* ctx) {
// the ctx have to be "static".
static std::map<buffer_type*, c_buffer_type_ptr> map;
if (!ctx) { return nullptr; }
auto it = map.find(ctx);
// add new wrapper if not find.
if (it == map.end()) {
auto* wrapper = new ggml_backend_buffer_type {
/* .iface = */ {
/* .get_name = */ buffer_type_get_name,
/* .alloc_buffer = */ buffer_type_alloc_buffer,
/* .get_alignment = */ buffer_type_get_alignment,
/* .get_max_size = */ buffer_type_get_max_size,
/* .get_alloc_size = */ buffer_type_get_alloc_size,
/* .is_host = */ buffer_type_is_host,
},
/* .device = */ device,
/* .context = */ ctx,
};
map[ctx] = c_buffer_type_ptr(wrapper);
return wrapper;
}
return it->second.get();
}
ggml_backend_t c_wrapper(ggml_backend_dev_t device, backend* ctx) {
if (!ctx) { return nullptr; }
auto& dev = *((ggml::cpp::backend::device*) (device->context));
return new ggml_backend {
/* .guid = */ const_cast<ggml_guid_t>(ctx->get_guid()),
/* .iface = */ {
/* .get_name = */ backend_get_name,
/* .free = */ backend_free,
/* .set_tensor_async = */ dev.caps_async() ? backend_set_tensor_async : nullptr,
/* .get_tensor_async = */ dev.caps_async() ? backend_get_tensor_async : nullptr,
/* .cpy_tensor_async = */ dev.caps_async() ? backend_cpy_tensor_async : nullptr,
/* .synchronize = */ dev.caps_async() ? backend_synchronize : nullptr,
/* .graph_plan_create = */ nullptr,
/* .graph_plan_free = */ nullptr,
/* .graph_plan_update = */ nullptr,
/* .graph_plan_compute = */ nullptr,
/* .graph_compute = */ backend_graph_compute,
/* .event_record = */ dev.caps_events() ? backend_event_record : nullptr,
/* .event_wait = */ dev.caps_events() ? backend_event_wait : nullptr,
/* .graph_optimize = */ nullptr,
},
/* .device = */ device,
/* .context = */ ctx
};
}
struct device_deleter {
void operator()(ggml_backend_device* c_device) {
delete (c_device);
}
};
typedef std::unique_ptr<ggml_backend_device, device_deleter> c_device_ptr;
ggml_backend_dev_t c_wrapper(ggml_backend_reg_t reg, device* ctx) {
// the ctx have to be "static" / "per backend_register"
static std::map<device*, c_device_ptr> map;
if (!ctx) { return nullptr; }
auto it = map.find(ctx);
if (it == map.end()) {
auto* wrapper = new ggml_backend_device {
/* .iface = */{
/* .get_name = */ device_get_name,
/* .get_description = */ device_get_description,
/* .get_memory = */ device_get_memory,
/* .get_type = */ device_get_type,
/* .get_props = */ device_get_props,
/* .init_backend = */ device_init_backend,
/* .get_buffer_type = */ device_get_buffer_type,
/* .get_host_buffer_type = */ ctx->caps_host_buffer() ? device_get_host_buffer_type : nullptr,
/* .buffer_from_host_ptr = */ ctx->caps_buffer_from_host_ptr() ? device_buffer_from_host_ptr : nullptr,
/* .supports_op = */ device_supports_op,
/* .supports_buft = */ device_supports_buft,
/* .offload_op = */ device_offload_op,
/* .event_new = */ ctx->caps_events() ? device_event_new : nullptr,
/* .event_free = */ ctx->caps_events() ? device_event_free : nullptr,
/* .event_synchronize = */ ctx->caps_events() ? device_event_synchronize : nullptr,
},
/* .reg = */ reg,
/* .context = */ ctx,
};
map[ctx] = c_device_ptr(wrapper);
return wrapper;
}
return it->second.get();
}
struct register_deleter {
void operator()(ggml_backend_reg_t c_register) {
delete (c_register);
}
};
typedef std::unique_ptr<ggml_backend_reg, register_deleter> c_register_ptr;
ggml_backend_reg_t c_wrapper(reg* ctx) {
// the ctx have to be static.
static std::map<reg*, c_register_ptr> map;
if (!ctx) { return nullptr; }
auto it = map.find(ctx);
if (it == map.end()) {
auto* wrapper = new ggml_backend_reg {
/* .api_version = */ GGML_BACKEND_API_VERSION,
/* .iface = */ {
/* .get_name = */ reg_get_name,
/* .get_device_count = */ reg_get_device_count,
/* .get_device = */ reg_get_device,
/* .get_proc_address = */ reg_get_proc_address,
},
/* .context = */ ctx,
};
map[ctx] = c_register_ptr(wrapper);
//map[ctx] = wrapper;
return wrapper;
}
return it->second.get();
//return it->second;
}
}
// for simple CPU buffer:
namespace ggml::cpp::backend::cpu {
// buffer
class buffer : public ggml::cpp::backend::buffer {
uint8_t* m_data = nullptr;
const std::size_t m_size;
public:
buffer(std::size_t size, std::size_t alignment): m_size(size) {
m_data = new (std::align_val_t(alignment)) uint8_t[m_size];
}
buffer(void* ptr, std::size_t /*size*/): m_size(0) {
m_data = (uint8_t*) ptr;
}
virtual ~buffer() {
if (m_size>0 && m_data) {
delete[] m_data;
}
m_data = nullptr;
}
void* get_base() override {
return m_data;
}
void memset_tensor(ggml_tensor & tensor, uint8_t value, std::size_t offset, std::size_t size) override {
memset((uint8_t *) tensor.data + offset, value, size);
}
void set_tensor(ggml_tensor & tensor, const void * data, std::size_t offset, std::size_t size) override {
memcpy((uint8_t *)tensor.data + offset, data, size);
}
void get_tensor(const ggml_tensor & tensor, void * data, std::size_t offset, std::size_t size) override {
memcpy(data, (uint8_t *)tensor.data + offset, size);
}
bool cpy_tensor (const ggml_tensor & src, ggml_tensor & dst) override {
if (ggml_backend_buffer_is_host(src.buffer)) {
memcpy(dst.data, src.data, ggml_nbytes(&src));
return true;
}
return false;
}
void clear (uint8_t value) override {
memset(m_data, value, m_size);
}
};
// buffer_type
class buffer_type : public ggml::cpp::backend::buffer_type {
const std::string m_name;
const std::size_t m_alignment;
const bool m_from_ptr;
public:
buffer_type(const std::string& name, bool from_ptr, std::size_t alignment) :
m_name(name), m_alignment(alignment), m_from_ptr(from_ptr)
{}
virtual ~buffer_type() {}
const std::string& get_name() override {
return m_name;
}
buffer* alloc_buffer(std::size_t size) override {
GGML_ASSERT(!m_from_ptr && "buffer type not for allocatable buffer");
return new buffer(size, m_alignment);
}
std::size_t get_alignment() override {
return m_alignment;
}
bool is_host() override {
return true;
}
buffer* register_buffer(void * ptr, std::size_t size, std::size_t /*max_tensor_size*/) override {
GGML_ASSERT(m_from_ptr && "buffer type not for ptr memory");
GGML_ASSERT((uintptr_t)ptr % m_alignment == 0 && "buffer pointer must be aligned");
return new buffer(ptr, size);
}
};
}
namespace ggml::cpp::backend {
buffer_type* new_cpu_buffer_type(
const std::string& name,
bool from_ptr,
std::size_t alignment
) {
return new ggml::cpp::backend::cpu::buffer_type(name, from_ptr, alignment);
}
}

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#pragma once
#ifndef __cplusplus
#error "This header is for C++ only"
#endif
#include "ggml.h"
#include "ggml-impl.h"
#include "ggml-backend.h"
#include <string>
#include <cstddef>
namespace ggml::cpp::backend {
class buffer { // ggml_backend_buffer_t
public:
virtual ~buffer();
virtual void* get_base() = 0;
virtual ggml_status init_tensor(ggml_tensor& /*tensor*/) { return GGML_STATUS_SUCCESS; }
virtual void memset_tensor( ggml_tensor & tensor, uint8_t value, std::size_t offset, std::size_t size) = 0;
virtual void set_tensor ( ggml_tensor & tensor, const void * data, std::size_t offset, std::size_t size) = 0;
virtual void get_tensor (const ggml_tensor & tensor, void * data, std::size_t offset, std::size_t size) = 0;
virtual bool cpy_tensor (const ggml_tensor & /*src*/, ggml_tensor & /*dst*/) { return false; }
virtual void clear (uint8_t value) = 0;
virtual void reset () {}
};
class buffer_type { // ggml_backend_buffer_type_t
public:
virtual ~buffer_type();
virtual const std::string& get_name() = 0;
virtual buffer* alloc_buffer(std::size_t size) = 0;
virtual std::size_t get_alignment() { return TENSOR_ALIGNMENT; }
virtual std::size_t get_max_size() { return SIZE_MAX; }
virtual std::size_t get_alloc_size(const ggml_tensor& tensor) { return ggml_nbytes(&tensor); }
virtual bool is_host() { return false; }
// for pointer from memory pointer:
virtual buffer* register_buffer(void * /*ptr*/, std::size_t /*size*/, std::size_t /*max_tensor_size*/) { return nullptr; }
};
// TODO: manage event
class event {
public:
virtual ~event();
};
// TODO: manage graph
//class graph_plan {
//public:
// virtual ~graph_plan();
//};
class device;
class backend { // ggml_backend_t
backend() = delete;
public:
backend(device& dev);
virtual ~backend();
virtual const std::string& get_name() = 0;
virtual const ggml_guid* get_guid() = 0;
// need => device::caps_async() {return true;}
virtual void set_tensor_async( ggml_tensor & tensor, const void * data, size_t offset, size_t size) { ggml_backend_tensor_set(&tensor, data, offset, size); }
virtual void get_tensor_async(const ggml_tensor & tensor, void * data, size_t offset, size_t size) { ggml_backend_tensor_get(&tensor, data, offset, size); }
virtual bool cpy_tensor_async(ggml_backend_t /*backend_src*/,/* ggml_backend_t backend_dst==this,*/ const ggml_tensor & /*src*/, ggml_tensor & /*dst*/) { return false; }
virtual void synchronize() {}
// TODO: manage graph
//virtual graph_plan& graph_plan_create(const ggml_cgraph & cgraph);
//virtual void graph_plan_free(graph_plan& plan);
//virtual void graph_plan_update(graph_plan& plan, const ggml_cgraph & cgraph);
//virtual enum ggml_status graph_plan_compute(graph_plan& plan);
virtual enum ggml_status graph_compute(ggml_cgraph & cgraph) = 0;
// need => device::caps_events() { return true; }
virtual void event_record (event & /*event*/) { GGML_ASSERT(false); }
virtual void event_wait (event & /*event*/) { GGML_ASSERT(false); }
// the extra functions:
virtual void set_n_threads(int /*n_threads*/) { }
protected:
device& m_device;
};
class device { // ggml_backend_dev_t
protected:
friend ggml_backend_buffer_type_t* backend_dev_get_extra_bufts(ggml_backend_dev_t device);
std::vector<buffer_type*> m_extra_buffers_type;
std::vector<ggml_backend_buffer_type_t> m_ggml_extra_buffers_type;
public:
virtual ~device();
virtual const std::string& get_name() = 0;
virtual const std::string& get_description() = 0;
virtual void get_memory(std::size_t & free, std::size_t & total) = 0;
virtual enum ggml_backend_dev_type get_type() = 0;
virtual backend& init_backend(const std::string& params) = 0;
virtual buffer_type& get_buffer_type() = 0;
virtual buffer_type* get_host_buffer_type() { return nullptr; }
virtual buffer_type* get_from_host_ptr_buffer_type() { return nullptr; }
virtual bool supports_op(const ggml_tensor & op) = 0;
virtual bool supports_buft(ggml_backend_buffer_type_t buft) = 0;
virtual bool offload_op(const ggml_tensor & /*op*/) { return false; }
// event => caps_events() { return true; }
virtual event* event_new() { return nullptr; }
virtual void event_synchronize(event& /*event*/) { GGML_ASSERT(false); }
//void get_props(struct ggml_backend_dev_props * props); ggml_backend_dev_caps
virtual bool caps_async() { return false; }
virtual bool caps_host_buffer() { return get_host_buffer_type() != nullptr; }
virtual bool caps_buffer_from_host_ptr() { return get_from_host_ptr_buffer_type() != nullptr; }
virtual bool caps_events() { return false; }
protected:
void register_extra_buffer_type(buffer_type* buft);
};
class reg { // ggml_backend_reg_t
public:
virtual ~reg();
virtual const std::string& get_name() = 0;
virtual std::size_t get_device_count() = 0;
virtual device& get_device(std::size_t index) = 0;
};
ggml_backend_buffer_t c_wrapper(ggml_backend_buffer_type_t buft, buffer* ctx, std::size_t size);
ggml_backend_buffer_type_t c_wrapper(ggml_backend_dev_t device, buffer_type* ctx);
ggml_backend_t c_wrapper(ggml_backend_dev_t device, backend* ctx);
ggml_backend_dev_t c_wrapper(ggml_backend_reg_t reg, device* ctx);
ggml_backend_reg_t c_wrapper(reg* ctx);
// for simple cpu buffer:
buffer_type* new_cpu_buffer_type(
const std::string& name,
bool from_ptr=false,
std::size_t alignment = TENSOR_ALIGNMENT
);
}

6
src/llama-model.cpp
View File

@ -268,9 +268,6 @@ static buft_list_t make_gpu_buft_list(ggml_backend_dev_t dev, llama_split_mode s
}
}
// add the device default buffer type
buft_list.emplace_back(dev, ggml_backend_dev_buffer_type(dev));
// add the device extra buffer type (if any)
ggml_backend_reg_t reg = ggml_backend_dev_backend_reg(dev);
auto ggml_backend_dev_get_extra_bufts_fn = (ggml_backend_dev_get_extra_bufts_t)
@ -284,6 +281,9 @@ static buft_list_t make_gpu_buft_list(ggml_backend_dev_t dev, llama_split_mode s
}
}
// add the device default buffer type
buft_list.emplace_back(dev, ggml_backend_dev_buffer_type(dev));
return buft_list;
}