Add support for VK_EXT_debug_utils to add labels to Vulkan objects. In step 1 compute pipelines are getting labeled.

Author: mtavenrath

ggml/CMakeLists.txt

@@ -177,6 +177,7 @@ option(GGML_VULKAN_DEBUG                    "ggml: enable Vulkan debug output"
 option(GGML_VULKAN_MEMORY_DEBUG             "ggml: enable Vulkan memory debug output"         OFF)
 option(GGML_VULKAN_SHADER_DEBUG_INFO        "ggml: enable Vulkan shader debug info"           OFF)
 option(GGML_VULKAN_PERF                     "ggml: enable Vulkan perf output"                 OFF)
+option(GGML_VULKAN_DEBUG_UTILS              "ggml: VK_EXT_debug_utils debug information"      OFF)
 option(GGML_VULKAN_VALIDATE                 "ggml: enable Vulkan validation"                  OFF)
 option(GGML_VULKAN_RUN_TESTS                "ggml: run Vulkan tests"                          OFF)
 option(GGML_KOMPUTE                         "ggml: use Kompute"                               OFF)

ggml/src/ggml-vulkan/CMakeLists.txt

@@ -113,6 +113,10 @@ if (Vulkan_FOUND)
         add_compile_definitions(GGML_VULKAN_PERF)
     endif()
 
+    if (GGML_VULKAN_DEBUG_UTILS)
+        add_compile_definitions(GGML_VULKAN_DEBUG_UTILS)
+    endif()
+
     if (GGML_VULKAN_VALIDATE)
         add_compile_definitions(GGML_VULKAN_VALIDATE)
     endif()

ggml/src/ggml-vulkan/ggml-vulkan.cpp

@@ -951,6 +951,11 @@ void vk_memory_logger::log_deallocation(vk_buffer_ref buf_ref) {
 struct vk_instance_t {
     vk::Instance instance;
 
+#ifdef GGML_VULKAN_DEBUG_UTILS
+    bool debug_utils_support = false;  // VK_EXT_debug_utils enabled
+    PFN_vkSetDebugUtilsObjectNameEXT pfnSetDebugUtilsObjectNameEXT = {};
+#endif
+
     std::vector<size_t> device_indices;
     vk_device devices[GGML_VK_MAX_DEVICES];
 };
@@ -1108,6 +1113,16 @@ static void ggml_vk_create_pipeline_func(vk_device& device, vk_pipeline& pipelin
     }
     pipeline->compiled = true;
 
+#ifdef GGML_VULKAN_DEBUG_UTILS
+    if (vk_instance.debug_utils_support) {
+        vk::DebugUtilsObjectNameInfoEXT duoni;
+        duoni.objectType = vk::ObjectType::ePipeline;
+        duoni.pObjectName = pipeline->name.c_str();
+        duoni.objectHandle = reinterpret_cast<uint64_t>(pipeline->pipeline.operator VkPipeline_T *());
+        vk_instance.pfnSetDebugUtilsObjectNameEXT(device->device, &static_cast<VkDebugUtilsObjectNameInfoEXT &>(duoni));
+    }
+#endif
+
     {
         std::lock_guard<std::mutex> guard(device->mutex);
         device->pipelines.insert({ pipeline->name, pipeline });
@@ -3483,6 +3498,10 @@ static void ggml_vk_print_gpu_info(size_t idx) {
 static bool ggml_vk_instance_validation_ext_available(const std::vector<vk::ExtensionProperties>& instance_extensions);
 static bool ggml_vk_instance_portability_enumeration_ext_available(const std::vector<vk::ExtensionProperties>& instance_extensions);
 
+#ifdef GGML_VULKAN_DEBUG_UTILS
+static bool ggml_vk_instance_debug_utils_ext_available(const std::vector<vk::ExtensionProperties> & instance_extensions);
+#endif
+
 static void ggml_vk_instance_init() {
     if (vk_instance_initialized) {
         return;
@@ -3503,7 +3522,9 @@ static void ggml_vk_instance_init() {
 #ifdef __APPLE__
     const bool portability_enumeration_ext = ggml_vk_instance_portability_enumeration_ext_available(instance_extensions);
 #endif
-
+#ifdef GGML_VULKAN_DEBUG_UTILS
+    const bool debug_utils_ext = ggml_vk_instance_debug_utils_ext_available(instance_extensions);
+#endif
     std::vector<const char*> layers;
 
     if (validation_ext) {
@@ -3517,6 +3538,11 @@ static void ggml_vk_instance_init() {
     if (portability_enumeration_ext) {
         extensions.push_back("VK_KHR_portability_enumeration");
     }
+#endif
+#ifdef GGML_VULKAN_DEBUG_UTILS
+    if (debug_utils_ext) {
+        extensions.push_back("VK_EXT_debug_utils");
+    }
 #endif
     vk::InstanceCreateInfo instance_create_info(vk::InstanceCreateFlags{}, &app_info, layers, extensions);
 #ifdef __APPLE__
@@ -3541,6 +3567,13 @@ static void ggml_vk_instance_init() {
     vk_instance.instance = vk::createInstance(instance_create_info);
     vk_instance_initialized = true;
 
+#ifdef GGML_VULKAN_DEBUG_UTILS
+    if (debug_utils_ext) {
+        vk_instance.pfnSetDebugUtilsObjectNameEXT = (PFN_vkSetDebugUtilsObjectNameEXT) vkGetInstanceProcAddr(vk_instance.instance, "vkSetDebugUtilsObjectNameEXT");
+        vk_instance.debug_utils_support = vk_instance.pfnSetDebugUtilsObjectNameEXT != nullptr;
+    }
+#endif
+
     size_t num_available_devices = vk_instance.instance.enumeratePhysicalDevices().size();
 
     // Emulate behavior of CUDA_VISIBLE_DEVICES for Vulkan
@@ -10066,6 +10099,24 @@ static bool ggml_vk_instance_portability_enumeration_ext_available(const std::ve
     UNUSED(instance_extensions);
 }
 
+#ifdef GGML_VULKAN_DEBUG_UTILS
+// Extension availability
+static bool ggml_vk_instance_debug_utils_ext_available(
+    const std::vector<vk::ExtensionProperties> & instance_extensions) {
+    // Check for portability enumeration extension for MoltenVK support
+    for (const auto & properties : instance_extensions) {
+        if (strcmp("VK_EXT_debug_utils", properties.extensionName) == 0) {
+            return true;
+        }
+    }
+
+    std::cerr << "ggml_vulkan: WARNING: Instance extension VK_EXT_debug_utils not found." << std::endl;
+    return false;
+
+    UNUSED(instance_extensions);
+}
+#endif
+
 static bool ggml_vk_khr_cooperative_matrix_support(const vk::PhysicalDeviceProperties& props, const vk::PhysicalDeviceDriverProperties& driver_props, vk_device_architecture arch) {
     switch (props.vendorID) {
     case VK_VENDOR_ID_INTEL: