add amx kernel for gemm (ggml-org#8998)

add intel amx isa detection

add vnni kernel for gemv cases

add vnni and amx kernel support for block_q8_0

code cleanup

fix packing B issue

enable openmp

fine tune amx kernel

switch to aten parallel pattern

add error message for nested parallelism

code cleanup

add f16 support in ggml-amx

add amx kernels for QK_K quant formats: Q4_K, Q5_K, Q6_K and IQ4_XS

update CMakeList

update README

fix some compilation warning

fix compiler warning when amx is not enabled

minor change

ggml-ci

move ggml_amx_init from ggml.c to ggml-amx/mmq.cpp

ggml-ci

update CMakeLists with -mamx-tile, -mamx-int8 and -mamx-bf16

ggml-ci

add amx as an ggml-backend

update header file, the old path for immintrin.h has changed to ggml-cpu-impl.h

minor change

update CMakeLists.txt

minor change

apply weight prepacking in set_tensor method in ggml-backend

fix compile error

ggml-ci

minor change

ggml-ci

update CMakeLists.txt

ggml-ci

add march dependency

minor change

ggml-ci

change ggml_backend_buffer_is_host to return false for amx backend

ggml-ci

fix supports_op

use device reg for AMX backend

ggml-ci

minor change

ggml-ci

minor change

fix rebase

set .buffer_from_host_ptr to be false for AMX backend

Author: mingfeima

CMakeLists.txt

@@ -88,6 +88,10 @@ if (NOT DEFINED GGML_LLAMAFILE)
     set(GGML_LLAMAFILE_DEFAULT ON)
 endif()
 
+if (NOT DEFINED GGML_AMX)
+    set(GGML_AMX ON)
+endif()
+
 if (NOT DEFINED GGML_CUDA_GRAPHS)
     set(GGML_CUDA_GRAPHS_DEFAULT ON)
 endif()

Makefile

@@ -93,11 +93,6 @@ GGML_METAL := 1
 DEPRECATE_WARNING := 1
 endif
 
-ifdef LLAMA_OPENMP
-GGML_OPENMP := 1
-DEPRECATE_WARNING := 1
-endif
-
 ifdef LLAMA_RPC
 GGML_RPC := 1
 DEPRECATE_WARNING := 1
@@ -584,6 +579,11 @@ ifndef GGML_NO_LLAMAFILE
 	OBJ_GGML    += ggml/src/llamafile/sgemm.o
 endif
 
+ifndef GGML_NO_AMX
+	MK_CPPFLAGS += -DGGML_USE_AMX
+	OBJ_GGML    += ggml/src/ggml-amx.o ggml/src/ggml-amx/mmq.o
+endif
+
 ifdef GGML_RPC
 	MK_CPPFLAGS += -DGGML_USE_RPC
 	OBJ_GGML    += ggml/src/ggml-rpc.o
@@ -1086,6 +1086,19 @@ ggml/src/llamafile/sgemm.o: \
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 endif # GGML_NO_LLAMAFILE
 
+ifndef GGML_NO_AMX
+ggml/src/ggml-amx.o: \
+	ggml/src/ggml-amx.cpp \
+	ggml/include/ggml-amx.h
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+
+ggml/src/ggml-amx/mmq.o: \
+	ggml/src/ggml-amx/mmq.cpp \
+	ggml/src/ggml-amx/mmq.h \
+	ggml/include/ggml.h
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+endif
+
 ifdef GGML_RPC
 ggml/src/ggml-rpc.o: \
 	ggml/src/ggml-rpc.cpp \
@@ -1237,6 +1250,7 @@ clean:
 	rm -vrf ggml/src/ggml-metal-embed.metal
 	rm -vrf ggml/src/ggml-cuda/*.o
 	rm -vrf ggml/src/ggml-cuda/template-instances/*.o
+	rm -vrf ggml/src/ggml-amx/*.o
 	rm -rvf $(BUILD_TARGETS)
 	rm -rvf $(TEST_TARGETS)
 	rm -f vulkan-shaders-gen ggml/src/ggml-vulkan-shaders.hpp ggml/src/ggml-vulkan-shaders.cpp

README.md

@@ -63,7 +63,7 @@ variety of hardware - locally and in the cloud.
 
 - Plain C/C++ implementation without any dependencies
 - Apple silicon is a first-class citizen - optimized via ARM NEON, Accelerate and Metal frameworks
-- AVX, AVX2 and AVX512 support for x86 architectures
+- AVX, AVX2, AVX512 and AMX support for x86 architectures
 - 1.5-bit, 2-bit, 3-bit, 4-bit, 5-bit, 6-bit, and 8-bit integer quantization for faster inference and reduced memory use
 - Custom CUDA kernels for running LLMs on NVIDIA GPUs (support for AMD GPUs via HIP and Moore Threads MTT GPUs via MUSA)
 - Vulkan and SYCL backend support

ggml/CMakeLists.txt

@@ -99,6 +99,9 @@ option(GGML_AVX512      "ggml: enable AVX512"           OFF)
 option(GGML_AVX512_VBMI "ggml: enable AVX512-VBMI"      OFF)
 option(GGML_AVX512_VNNI "ggml: enable AVX512-VNNI"      OFF)
 option(GGML_AVX512_BF16 "ggml: enable AVX512-BF16"      OFF)
+option(GGML_AMX_TILE    "ggml: enable AMX-TILE"         OFF)
+option(GGML_AMX_INT8    "ggml: enable AMX-INT8"         OFF)
+option(GGML_AMX_BF16    "ggml: enable AMX-BF16"         OFF)
 option(GGML_FMA         "ggml: enable FMA"              ${INS_ENB})
 if (NOT MSVC)
     option(GGML_F16C    "ggml: enable F16C"             ${INS_ENB}) # in MSVC F16C is implied with AVX2/AVX512
@@ -158,6 +161,7 @@ set   (GGML_METAL_MACOSX_VERSION_MIN "" CACHE STRING
 set   (GGML_METAL_STD "" CACHE STRING       "ggml: metal standard version (-std flag)")
 option(GGML_OPENMP                          "ggml: use OpenMP"                                ON)
 option(GGML_RPC                             "ggml: use RPC"                                   OFF)
+option(GGML_AMX                             "ggml: use AMX"                                   OFF)
 option(GGML_SYCL                            "ggml: use SYCL"                                  OFF)
 option(GGML_SYCL_F16                        "ggml: use 16 bit floats for sycl calculations"   OFF)
 set   (GGML_SYCL_TARGET "INTEL" CACHE STRING

ggml/include/ggml-amx.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "ggml.h"
+#include "ggml-backend.h"
+
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+// buffer_type API
+GGML_API ggml_backend_buffer_type_t ggml_backend_amx_buffer_type(void);
+
+GGML_API bool ggml_backend_is_amx(ggml_backend_t backend);
+
+// backend API
+GGML_API ggml_backend_t ggml_backend_amx_init(void);
+
+GGML_API void ggml_backend_amx_set_n_threads(ggml_backend_t backend_amx, int n_threads);
+
+GGML_API ggml_backend_reg_t ggml_backend_amx_reg(void);
+
+#ifdef  __cplusplus
+}
+#endif

ggml/include/ggml.h

@@ -2488,6 +2488,7 @@ extern "C" {
     GGML_API int ggml_cpu_has_avx512_vbmi(void);
     GGML_API int ggml_cpu_has_avx512_vnni(void);
     GGML_API int ggml_cpu_has_avx512_bf16(void);
+    GGML_API int ggml_cpu_has_amx_int8   (void);
     GGML_API int ggml_cpu_has_fma        (void);
     GGML_API int ggml_cpu_has_neon       (void);
     GGML_API int ggml_cpu_has_sve        (void);

ggml/src/CMakeLists.txt

@@ -267,6 +267,26 @@ if (GGML_LLAMAFILE)
     set(GGML_SOURCES_LLAMAFILE llamafile/sgemm.cpp)
 endif()
 
+if (GGML_AMX)
+    if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 11.0)
+    else()
+        set(GGML_AMX OFF)
+        message(WARNING "AMX requires gcc version > 11.0. Turning off GGML_AMX.")
+    endif()
+
+    if (GGML_AMX)
+        message(STATUS "Using AMX")
+
+        list(APPEND GGML_CDEF_PUBLIC GGML_USE_AMX)
+
+        file(GLOB   GGML_HEADERS_AMX "ggml-amx/*.h")
+        list(APPEND GGML_HEADERS_AMX "../include/ggml-amx.h")
+
+        file(GLOB   GGML_SOURCES_AMX "ggml-amx/*.cpp")
+        list(APPEND GGML_SOURCES_AMX "ggml-amx.cpp")
+    endif()
+endif()
+
 if (GGML_CUDA)
     cmake_minimum_required(VERSION 3.18)  # for CMAKE_CUDA_ARCHITECTURES
 
@@ -1180,6 +1200,18 @@ elseif (CMAKE_OSX_ARCHITECTURES STREQUAL "x86_64" OR CMAKE_GENERATOR_PLATFORM_LW
                 add_compile_definitions($<$<COMPILE_LANGUAGE:C>:__AVX512BF16__>)
                 add_compile_definitions($<$<COMPILE_LANGUAGE:CXX>:__AVX512BF16__>)
             endif()
+            if (GGML_AMX_TILE)
+                add_compile_definitions($<$<COMPILE_LANGUAGE:C>:__AMX_TILE__>)
+                add_compile_definitions($<$<COMPILE_LANGUAGE:CXX>:__AMX_TILE__>)
+            endif()
+            if (GGML_AMX_INT8)
+                add_compile_definitions($<$<COMPILE_LANGUAGE:C>:__AMX_INT8__>)
+                add_compile_definitions($<$<COMPILE_LANGUAGE:CXX>:__AMX_INT8__>)
+            endif()
+            if (GGML_AMX_BF16)
+                add_compile_definitions($<$<COMPILE_LANGUAGE:C>:__AMX_BF16__>)
+                add_compile_definitions($<$<COMPILE_LANGUAGE:CXX>:__AMX_BF16__>)
+            endif()
         elseif (GGML_AVX2)
             list(APPEND ARCH_FLAGS /arch:AVX2)
         elseif (GGML_AVX)
@@ -1215,6 +1247,15 @@ elseif (CMAKE_OSX_ARCHITECTURES STREQUAL "x86_64" OR CMAKE_GENERATOR_PLATFORM_LW
         if (GGML_AVX512_BF16)
             list(APPEND ARCH_FLAGS -mavx512bf16)
         endif()
+        if (GGML_AMX_TILE)
+            list(APPEND ARCH_FLAGS -mamx-tile)
+        endif()
+        if (GGML_AMX_INT8)
+            list(APPEND ARCH_FLAGS -mamx-int8)
+        endif()
+        if (GGML_AMX_BF16)
+            list(APPEND ARCH_FLAGS -mamx-bf16)
+        endif()
     endif()
 elseif (${CMAKE_SYSTEM_PROCESSOR} MATCHES "ppc64")
     message(STATUS "PowerPC detected")
@@ -1340,6 +1381,7 @@ add_library(ggml
             ${GGML_SOURCES_ROCM}      ${GGML_HEADERS_ROCM}
             ${GGML_SOURCES_BLAS}      ${GGML_HEADERS_BLAS}
             ${GGML_SOURCES_LLAMAFILE} ${GGML_HEADERS_LLAMAFILE}
+            ${GGML_SOURCES_AMX}       ${GGML_HEADERS_AMX}
             ${GGML_SOURCES_CANN}      ${GGML_HEADERS_CANN}
             ggml-aarch64.c            ggml-aarch64.h
             )