CPU: Map Dot2D to MKL SGEMM

src/ngraph/CMakeLists.txt

@@ -98,16 +98,17 @@ include_directories(
     "${EIGEN_INCLUDE_DIR}"
     )
 
-if(LLVM_INCLUDE_DIR)
-    include_directories(SYSTEM ${LLVM_INCLUDE_DIR})
-    link_directories(${LLVM_LIB_DIR})
+if(LLVM_INCLUDE_DIR AND MKLDNN_INCLUDE_DIR)
+    include_directories(SYSTEM ${LLVM_INCLUDE_DIR} ${MKLDNN_INCLUDE_DIR})
+    link_directories(${LLVM_LIB_DIR} ${MKLDNN_LIB_DIR})
     # Add sources for the CPU backend
     # and all its dependencies
     set(SRC ${SRC}
         codegen/compiler.cpp
         runtime/cpu/call_frame.cpp
-        runtime/cpu/cpu_manager.cpp
         runtime/cpu/cpu_backend.cpp
+        runtime/cpu/cpu_manager.cpp
+        runtime/cpu/cpu_kernels.cpp
         runtime/cpu/emitter.cpp
         runtime/cpu/external_function.cpp
         )
@@ -132,8 +133,10 @@ if (APPLE)
     set_property(TARGET ngraph PROPERTY PREFIX "lib")
     set_property(TARGET ngraph PROPERTY OUTPUT_NAME "ngraph.so")
     set_property(TARGET ngraph PROPERTY SUFFIX "")
-else()
-    include_directories("${MKLDNN_INCLUDE_DIR}")
+endif()
+
+if(MKLDNN_LIB_DIR)
+    target_link_libraries(ngraph LINK_PRIVATE mkldnn)
 endif()
 
 #-----------------------------------------------------------------------------------------------
@@ -194,3 +197,7 @@ add_dependencies(ngraph eigen)
 if(NOT LLVM_PACKAGED AND LLVM_INCLUDE_DIR)
     add_dependencies(ngraph ext_llvm)
 endif()
+
+if(MKLDNN_INCLUDE_DIR)
+    add_dependencies(ngraph ext_mkldnn)
+endif()

src/ngraph/runtime/cpu/cpu_kernels.cpp

+// ----------------------------------------------------------------------------
+// Copyright 2017 Nervana Systems Inc.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// ----------------------------------------------------------------------------
+
+#include "ngraph/runtime/cpu/cpu_kernels.hpp"

src/ngraph/runtime/cpu/cpu_kernels.hpp

+// ----------------------------------------------------------------------------
+// Copyright 2017 Nervana Systems Inc.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// ----------------------------------------------------------------------------
+
+#pragma once
+
+#include "ngraph/types/element_type.hpp"
+
+// CBLAS types and wrappers
+
+namespace cblas
+{
+    enum class Layout
+    {
+        RowMajor = 101,
+        ColMajor = 102
+    };
+
+    enum class Transpose
+    {
+        None = 111,
+        Transpose = 112,
+        ConjTrans = 113
+    };
+
+    enum class UpperLower
+    {
+        Upper = 121,
+        Lower = 122
+    };
+
+    enum class Diag
+    {
+        NonUnit = 131,
+        Unit = 132
+    };
+
+    enum class Side
+    {
+        Left = 141,
+        Right = 142
+    };
+
+    enum class Storage
+    {
+        Packed = 151
+    };
+
+    enum class Ident
+    {
+        AMatrix = 161,
+        BMatrix = 162
+    };
+
+    enum class Offset
+    {
+        RowOffset = 171,
+        ColOffset = 172,
+        FixOffset = 173
+    };
+
+    extern "C" {
+    void cblas_sgemm(const Layout layout,
+                     const Transpose TransA,
+                     const Transpose TransB,
+                     const ngraph::element::Int64::type M,
+                     const ngraph::element::Int64::type N,
+                     const ngraph::element::Int64::type K,
+                     const ngraph::element::Float32::type alpha,
+                     const ngraph::element::Float32::type* A,
+                     const ngraph::element::Int64::type lda,
+                     const ngraph::element::Float32::type* B,
+                     const ngraph::element::Int64::type ldb,
+                     const ngraph::element::Float32::type beta,
+                     ngraph::element::Float32::type* C,
+                     const ngraph::element::Int64::type ldc);
+    }
+}

src/ngraph/runtime/cpu/emitter.cpp

@@ -17,6 +17,7 @@
 #include <typeindex>
 #include <unordered_map>
 #include <vector>
+#include <algorithm>
 
 #include "ngraph/descriptor/layout/dense_tensor_view_layout.hpp"
 #include "ngraph/node.hpp"
@@ -177,6 +178,28 @@ void Emitter::EMITTER_DECL(EmitDot)
         auto arg1_layout = inputs[1].get_layout<DenseTensorViewLayout>();
         auto out_layout = outputs[0].get_layout<DenseTensorViewLayout>();
 
+        // Emit an MKL SGEMM call if possible
+        if (arg0_element_type == ngraph::element::Float32::element_type())
+        {
+            TU +=
+                "    {\n"
+                "        auto arg0 = call_frame->get_tensor_view_data<" +
+                element_type_names[TI(arg0_element_type)] + ">(" + to_string(inputs[0].get_index()) +
+                ");\n"
+                "        auto arg1 = call_frame->get_tensor_view_data<" +
+                element_type_names[TI(arg0_element_type)] + ">(" + to_string(inputs[1].get_index()) +
+                ");\n"
+                "        auto out  = call_frame->get_tensor_view_data<" +
+                element_type_names[TI(arg0_element_type)] + ">(" + to_string(outputs[0].get_index()) +
+                ");\n"
+                "        cblas::cblas_sgemm(cblas::Layout::RowMajor, cblas::Transpose::None, cblas::Transpose::None, " +
+                to_string(arg0_shape[0]) + ", " + to_string(arg1_shape[1]) + ", " + to_string(arg0_shape[1]) + ",\n"
+                "        1.0f, arg0, " + to_string(max(1UL, arg0_shape[1])) + ", arg1, " + to_string(max(1UL, arg1_shape[1])) + ", 0.0f,\n"
+                "        out, " + to_string(max(1UL, arg1_shape[1])) + ");\n"
+                "    }\n";
+        }
+        else
+        {
             TU +=
                 "    {\n"
                 "        auto arg0 = call_frame->get_tensor_view_data<" +
@@ -202,6 +225,7 @@ void Emitter::EMITTER_DECL(EmitDot)
                 ");\n"
                 "    }\n";
         }
+    }
     else
     {
         throw ngraph_error("Dot product not implemented for given inputs");

src/ngraph/runtime/cpu/external_function.cpp

@@ -195,9 +195,10 @@ void ExternalFunction::compile(FunctionMap& function_map)
 #include <Eigen/Dense>
 
 #include "ngraph/descriptor/layout/dense_tensor_view_layout.hpp"
+#include "ngraph/runtime/tensor_view_info.hpp"
 #include "ngraph/runtime/cpu/call_frame.hpp"
+#include "ngraph/runtime/cpu/cpu_kernels.hpp"
 #include "ngraph/runtime/cpu/eigen_utils.hpp"
-#include "ngraph/runtime/tensor_view_info.hpp"
 
 void *__dso_handle = 0;