feat: pass task-specific config to backend

flutter/assets/tasks.pbtxt

@@ -247,4 +247,12 @@ task {
     id: "stable_diffusion"
     name: "StableDiffusion"
   }
+  custom_config {
+    id: "stable_diffusion_seed"
+    value: "633994880"
+  }
+  custom_config {
+    id: "stable_diffusion_num_steps"
+    value: "20"
+  }
 }

flutter/cpp/binary/main.cc

@@ -132,7 +132,7 @@ int Main(int argc, char *argv[]) {
   command_line += " " + backend_name + " " + benchmark_id;
 
   // Command Line Flags for mlperf.
-  std::string mode, scenario = "SingleStream", output_dir;
+  std::string mode, scenario = "SingleStream", output_dir, custom_config;
   int min_query_count = 100, min_duration_ms = 100,
       max_duration_ms = 10 * 60 * 1000,
       single_stream_expected_latency_ns = 1000000;
@@ -157,8 +157,9 @@ int Main(int argc, char *argv[]) {
                         "A hint used by the loadgen to pre-generate "
                         "enough samples to meet the minimum test duration."),
        Flag::CreateFlag("output_dir", &output_dir,
-                        "The output directory of mlperf.", Flag::kRequired)});
-
+                        "The output directory of mlperf.", Flag::kRequired),
+       Flag::CreateFlag("custom_config", &custom_config,
+                        "Custom config in form key1:val1,key2:val2.")});
   // Command Line Flags for backend.
   std::unique_ptr<Backend> backend;
   std::unique_ptr<Dataset> dataset;
@@ -207,9 +208,8 @@ int Main(int argc, char *argv[]) {
             }
           }
         }
-
         SettingList setting_list =
-            createSettingList(backend_setting, benchmark_id);
+            CreateSettingList(backend_setting, custom_config, benchmark_id);
 
         ExternalBackend *external_backend = new ExternalBackend(
             model_file_path, lib_path, setting_list, native_lib_path);

flutter/cpp/proto/mlperf_task.proto

@@ -31,7 +31,7 @@ message MLPerfConfig {
 // Config of the mlperf tasks.
 // A task is basically a combination of models and a dataset.
 //
-// Next ID: 11
+// Next ID: 12
 message TaskConfig {
   // Must be unique in one task file. Ex: image_classification
   // used to match backend settings
@@ -52,6 +52,7 @@ message TaskConfig {
   required string scenario = 7;
   required DatasetConfig datasets = 8;
   required ModelConfig model = 9;
+  repeated CustomConfig custom_config = 11;
 }
 
 // Datasets for a task
@@ -107,3 +108,14 @@ message ModelConfig {
   // Number of detection classes if applicable
   optional int32 num_classes = 6;
 }
+
+// CustomConfig are task specific configuration.
+// The TaskConfig.CustomConfig will be converted to
+// BenchmarkSetting.CustomSetting and passed to the backend.
+// To avoid name collision, the id should be prefixed with TaskConfig.id.
+message CustomConfig {
+  // Id of this config.
+  required string id = 1;
+  // Value of this config.
+  required string value = 2;
+}

flutter/cpp/proto/test.cc

@@ -139,9 +139,11 @@ int test_proto() {
   std::list<std::string> benchmarks;
   benchmarks.push_back("image_classification");
   benchmarks.push_back("image_classification_offline");
+  std::string custom_config = "key1:val1,key2:val2";
   for (auto benchmark_id : benchmarks) {
     // Convert to SettingList
-    SettingList setting_list = createSettingList(backend_setting, benchmark_id);
+    SettingList setting_list =
+        CreateSettingList(backend_setting, custom_config, benchmark_id);
 
     std::cout << "SettingList for " << benchmark_id << ":\n";
     dumpSettingList(setting_list);

flutter/cpp/utils.cc

@@ -125,22 +125,61 @@ mlperf_backend_configuration_t CppToCSettings(const SettingList &settings) {
   return c_settings;
 }
 
-SettingList createSettingList(const BackendSetting &backend_setting,
-                              std::string benchmark_id) {
+// Split the string by a given delimiter
+std::vector<std::string> _splitString(const std::string &str, char delimiter) {
+  std::vector<std::string> tokens;
+  std::stringstream ss(str);
+  std::string token;
+  while (std::getline(ss, token, delimiter)) {
+    tokens.push_back(token);
+  }
+  return tokens;
+}
+
+// Parse the key:value string list
+std::unordered_map<std::string, std::string> _parseKeyValueList(
+    const std::string &input) {
+  std::unordered_map<std::string, std::string> keyValueMap;
+  std::vector<std::string> pairs = _splitString(input, ',');  // Split by comma
+
+  for (const std::string &pair : pairs) {
+    std::vector<std::string> keyValue =
+        _splitString(pair, ':');  // Split by colon
+    if (keyValue.size() == 2) {
+      keyValueMap[keyValue[0]] = keyValue[1];
+    } else {
+      LOG(ERROR) << "Invalid key:value pair: " << pair;
+    }
+  }
+  return keyValueMap;
+}
+
+// Create the setting list for backend
+SettingList CreateSettingList(const BackendSetting &backend_setting,
+                              const std::string &custom_config,
+                              const std::string &benchmark_id) {
   SettingList setting_list;
   int setting_index = 0;
-
-  for (auto setting : backend_setting.common_setting()) {
+  for (const auto &setting : backend_setting.common_setting()) {
     setting_list.add_setting();
     (*setting_list.mutable_setting(setting_index)) = setting;
     setting_index++;
   }
 
   // Copy the benchmark specific settings
-  setting_index = 0;
-  for (auto bm_setting : backend_setting.benchmark_setting()) {
+  for (const auto &bm_setting : backend_setting.benchmark_setting()) {
     if (bm_setting.benchmark_id() == benchmark_id) {
       setting_list.mutable_benchmark_setting()->CopyFrom(bm_setting);
+
+      auto parsed = _parseKeyValueList(custom_config);
+      for (const auto &kv : parsed) {
+        CustomSetting custom_setting = CustomSetting();
+        custom_setting.set_id(kv.first);
+        custom_setting.set_value(kv.second);
+        setting_list.mutable_benchmark_setting()->mutable_custom_setting()->Add(
+            std::move(custom_setting));
+      }
+      break;
     }
   }
   LOG(INFO) << "setting_list:" << std::endl << setting_list.DebugString();

flutter/cpp/utils.h

@@ -65,8 +65,9 @@ void DeleteBackendConfiguration(mlperf_backend_configuration_t *configs);
 
 mlperf_backend_configuration_t CppToCSettings(const SettingList &settings);
 
-SettingList createSettingList(const BackendSetting &backend_setting,
-                              std::string benchmark_id);
+SettingList CreateSettingList(const BackendSetting &backend_setting,
+                              const std::string &custom_config,
+                              const std::string &benchmark_id);
 
 }  // namespace mobile
 }  // namespace mlperf

flutter/lib/benchmark/benchmark.dart

@@ -92,6 +92,11 @@ class Benchmark {
       setting: commonSettings,
       benchmarkSetting: benchmarkSettings,
     );
+    // Convert TaskConfig.CustomConfig to BenchmarkSetting.CustomSetting
+    final customConfigs = taskConfig.customConfig
+        .map((e) => pb.CustomSetting(id: e.id, value: e.value))
+        .toList();
+    benchmarkSettings.customSetting.addAll(customConfigs);
     final uris = selectedDelegate.modelFile.map((e) => e.modelPath).toList();
     final modelDirName = selectedDelegate.delegateName.replaceAll(' ', '_');
     final backendModelPath =

mobile_back_apple/dev-utils/Makefile

@@ -131,8 +131,9 @@ tflite-run-sd:
 	bazel-bin/flutter/cpp/binary/main EXTERNAL stable_diffusion \
 		--mode=PerformanceOnly \
 		--output_dir="${REPO_ROOT_DIR}/output" \
-		--model_file="${REPO_ROOT_DIR}/mobile_back_apple/dev-resources/stable_diffusion/sd-models" \
+		--model_file="${REPO_ROOT_DIR}/mobile_back_apple/dev-resources/stable_diffusion/dynamic-sd-models" \
 		--lib_path="bazel-bin/mobile_back_tflite/cpp/backend_tflite/libtflitebackend.so" \
+		--custom_config="stable_diffusion_num_steps:20,stable_diffusion_seed:633994880" \
 		--input_tfrecord="${REPO_ROOT_DIR}/mobile_back_apple/dev-resources/stable_diffusion/coco_gen_full.tfrecord" \
 		--input_clip_model="${REPO_ROOT_DIR}/mobile_back_apple/dev-resources/stable_diffusion/clip_model_512x512.tflite" \
 		--min_query_count=5

mobile_back_tflite/cpp/backend_tflite/stable_diffusion_invoker.cc

@@ -24,15 +24,15 @@ StableDiffusionInvoker::StableDiffusionInvoker(SDBackendData* backend_data)
     : backend_data_(backend_data) {}
 
 std::vector<float> StableDiffusionInvoker::invoke() {
-  std::cout << "Prompt encoding started" << std::endl;
+  LOG(INFO) << "Prompt encoding started";
   auto encoded_text = encode_prompt(backend_data_->input_prompt_tokens);
   auto unconditional_encoded_text =
       encode_prompt(backend_data_->unconditional_tokens);
-  std::cout << "Diffusion process started" << std::endl;
+  LOG(INFO) << "Diffusion process started";
   auto latent =
       diffusion_process(encoded_text, unconditional_encoded_text,
                         backend_data_->num_steps, backend_data_->seed);
-  std::cout << "Image decoding started" << std::endl;
+  LOG(INFO) << "Image decoding started";
   return decode_image(latent);
 }
 
@@ -108,7 +108,7 @@ std::vector<float> StableDiffusionInvoker::diffusion_process(
   auto alphas_prev = std::get<1>(alphas_tuple);
 
   for (int i = timesteps.size() - 1; i >= 0; --i) {
-    std::cout << "Step " << timesteps.size() - 1 - i << "\n";
+    LOG(INFO) << "Step " << timesteps.size() - 1 - i;
 
     auto latent_prev = latent;
     auto t_emb = get_timestep_embedding(timesteps[i]);

mobile_back_tflite/cpp/backend_tflite/stable_diffusion_pipeline.cc

@@ -64,6 +64,15 @@ mlperf_backend_ptr_t StableDiffusionPipeline::backend_create(
   SDBackendData* backend_data = new SDBackendData();
   backendExists = true;
 
+  for (int i = 0; i < configs->count; ++i) {
+    if (strcmp(configs->keys[i], "stable_diffusion_seed") == 0) {
+      backend_data->seed = atoi(configs->values[i]);
+    }
+    if (strcmp(configs->keys[i], "stable_diffusion_num_steps") == 0) {
+      backend_data->num_steps = atoi(configs->values[i]);
+    }
+  }
+
   // Load models from the provided directory path
   std::string text_encoder_path =
       std::string(model_path) + "/sd_text_encoder_dynamic.tflite";