better hash

Author: wejoncy

onnxruntime/core/providers/coreml/builders/model_builder.cc

@@ -391,7 +391,7 @@ void CreateEmptyFile(const std::string& filename) {
 #endif  // defined(COREML_ENABLE_MLPROGRAM)
 
 std::string GetModelOutputPath(const CoreMLOptions& coreml_options,
-                               const std::vector<std::string>& onnx_input_names) {
+                               const std::string& graph_name) {
   std::string path;
   if (coreml_options.ModelCachePath().empty()) {
     // path is used to create the ML Package directory for ML Program, and for the model directly otherwise.
@@ -400,14 +400,11 @@ std::string GetModelOutputPath(const CoreMLOptions& coreml_options,
       path += ".model.mlmodel";
     }
   } else {
-    // input names in onnx are unique. so we can use them as the key in the cache.
-    std::string inputs_collections = std::accumulate(
-        onnx_input_names.begin(), onnx_input_names.end(), std::string(),
-        [](const std::string& a, const std::string& b) { return a + "," + b; });
-    std::hash<std::string> hasher;
-    // different subgraph has different folders. so we need to hash the inputs.
-    path = std::string(coreml_options.ModelCachePath()) +
-           "/" + std::to_string(hasher(inputs_collections));
+    // graph_name is uniquely generated by
+    // onnxruntime/core/providers/coreml/coreml_execution_provider.cc::gen_metadef_name
+    // int metadef_id = metadef_id_generator_.GenerateId(graph_viewer, model_hash);
+    // MakeString(COREML, "_", model_hash, "_", metadef_id);.
+    path = std::string(coreml_options.ModelCachePath()) + "/" + graph_name;
     if (!coreml_options.CreateMLProgram()) {
       ORT_THROW_IF_ERROR(Env::Default().CreateFolder(path));
       path += "/mlmodel";
@@ -427,7 +424,7 @@ ModelBuilder::ModelBuilder(const GraphViewer& graph_viewer, const logging::Logge
       coreml_version_(coreml_version),
       coreml_options_(coreml_options),
       create_ml_program_(coreml_options.CreateMLProgram()),
-      model_output_path_(GetModelOutputPath(coreml_options, onnx_input_names)),
+      model_output_path_(GetModelOutputPath(coreml_options, graph_viewer.Name())),
       onnx_input_names_(std::move(onnx_input_names)),
       onnx_output_names_(std::move(onnx_output_names)),
       coreml_model_(std::make_unique<CoreML::Specification::Model>()) {

onnxruntime/core/providers/coreml/coreml_execution_provider.cc

@@ -18,6 +18,7 @@
 #include "core/providers/coreml/model/host_utils.h"
 #include "core/providers/coreml/model/model.h"
 #include "core/providers/coreml/shape_utils.h"
+#include "core/graph/model.h"
 
 namespace onnxruntime {
 
@@ -57,7 +58,11 @@ CoreMLExecutionProvider::GetCapability(const onnxruntime::GraphViewer& graph_vie
       [&]() {
         HashValue model_hash;
         int metadef_id = metadef_id_generator_.GenerateId(graph_viewer, model_hash);
-        return MakeString(COREML, "_", model_hash, "_", metadef_id);
+        std::string user_provide_hash;
+        if (graph_viewer.GetGraph().GetModel().MetaData().count("model_hash") > 0) {
+          user_provide_hash = graph_viewer.GetGraph().GetModel().MetaData().at("model_hash");
+        }
+        return MakeString(user_provide_hash, "_", COREML, "_", model_hash, "_", metadef_id);
       };
 
   result = utils::CreateSupportedPartitions(graph_viewer, supported_nodes, {},