Support omnitrace-dl as kokkos profile library (#37)

- add OnLoad and OnUnload to omnitrace-dl
- disable global fence for kokkos profiling tools
- tweak omnitrace_strip_target to use wildcards
- added dl-gen.py script for generating dlopen bindings
- added support for kokkosp_request_tool_settings
- added support for kokkosp_dual_view_sync
- added support for kokkosp_dual_view_modify

[ROCm/rocprofiler-systems commit: ab395f86c4]

projects/rocprofiler-systems/source/lib/omnitrace-dl/dl.cpp

@@ -55,6 +55,13 @@
 
 //--------------------------------------------------------------------------------------//
 
+std::ostream&
+operator<<(std::ostream& _os, const SpaceHandle& _handle)
+{
+    _os << _handle.name;
+    return _os;
+}
+
 namespace omnitrace
 {
 inline namespace dl
@@ -206,6 +213,57 @@ struct OMNITRACE_HIDDEN_API indirect
         OMNITRACE_DLSYM(omnitrace_register_coverage_f, m_omnihandle,
                         "omnitrace_register_coverage");
 
+        OMNITRACE_DLSYM(kokkosp_print_help_f, m_omnihandle, "kokkosp_print_help");
+        OMNITRACE_DLSYM(kokkosp_parse_args_f, m_omnihandle, "kokkosp_parse_args");
+        OMNITRACE_DLSYM(kokkosp_declare_metadata_f, m_omnihandle,
+                        "kokkosp_declare_metadata");
+        OMNITRACE_DLSYM(kokkosp_request_tool_settings_f, m_omnihandle,
+                        "kokkosp_request_tool_settings");
+        OMNITRACE_DLSYM(kokkosp_init_library_f, m_omnihandle, "kokkosp_init_library");
+        OMNITRACE_DLSYM(kokkosp_finalize_library_f, m_omnihandle,
+                        "kokkosp_finalize_library");
+        OMNITRACE_DLSYM(kokkosp_begin_parallel_for_f, m_omnihandle,
+                        "kokkosp_begin_parallel_for");
+        OMNITRACE_DLSYM(kokkosp_end_parallel_for_f, m_omnihandle,
+                        "kokkosp_end_parallel_for");
+        OMNITRACE_DLSYM(kokkosp_begin_parallel_reduce_f, m_omnihandle,
+                        "kokkosp_begin_parallel_reduce");
+        OMNITRACE_DLSYM(kokkosp_end_parallel_reduce_f, m_omnihandle,
+                        "kokkosp_end_parallel_reduce");
+        OMNITRACE_DLSYM(kokkosp_begin_parallel_scan_f, m_omnihandle,
+                        "kokkosp_begin_parallel_scan");
+        OMNITRACE_DLSYM(kokkosp_end_parallel_scan_f, m_omnihandle,
+                        "kokkosp_end_parallel_scan");
+        OMNITRACE_DLSYM(kokkosp_begin_fence_f, m_omnihandle, "kokkosp_begin_fence");
+        OMNITRACE_DLSYM(kokkosp_end_fence_f, m_omnihandle, "kokkosp_end_fence");
+        OMNITRACE_DLSYM(kokkosp_push_profile_region_f, m_omnihandle,
+                        "kokkosp_push_profile_region");
+        OMNITRACE_DLSYM(kokkosp_pop_profile_region_f, m_omnihandle,
+                        "kokkosp_pop_profile_region");
+        OMNITRACE_DLSYM(kokkosp_create_profile_section_f, m_omnihandle,
+                        "kokkosp_create_profile_section");
+        OMNITRACE_DLSYM(kokkosp_destroy_profile_section_f, m_omnihandle,
+                        "kokkosp_destroy_profile_section");
+        OMNITRACE_DLSYM(kokkosp_start_profile_section_f, m_omnihandle,
+                        "kokkosp_start_profile_section");
+        OMNITRACE_DLSYM(kokkosp_stop_profile_section_f, m_omnihandle,
+                        "kokkosp_stop_profile_section");
+        OMNITRACE_DLSYM(kokkosp_allocate_data_f, m_omnihandle, "kokkosp_allocate_data");
+        OMNITRACE_DLSYM(kokkosp_deallocate_data_f, m_omnihandle,
+                        "kokkosp_deallocate_data");
+        OMNITRACE_DLSYM(kokkosp_begin_deep_copy_f, m_omnihandle,
+                        "kokkosp_begin_deep_copy");
+        OMNITRACE_DLSYM(kokkosp_end_deep_copy_f, m_omnihandle, "kokkosp_end_deep_copy");
+        OMNITRACE_DLSYM(kokkosp_profile_event_f, m_omnihandle, "kokkosp_profile_event");
+        OMNITRACE_DLSYM(kokkosp_dual_view_sync_f, m_omnihandle, "kokkosp_dual_view_sync");
+        OMNITRACE_DLSYM(kokkosp_dual_view_modify_f, m_omnihandle,
+                        "kokkosp_dual_view_modify");
+
+#if OMNITRACE_USE_ROCTRACER > 0
+        OMNITRACE_DLSYM(hsa_on_load_f, m_omnihandle, "OnLoad");
+        OMNITRACE_DLSYM(hsa_on_unload_f, m_omnihandle, "OnUnload");
+#endif
+
 #if OMNITRACE_USE_OMPT == 0
         _warn_verbose = 5;
 #else
@@ -256,6 +314,7 @@ struct OMNITRACE_HIDDEN_API indirect
     }
 
 public:
+    // omnitrace functions
     void (*omnitrace_init_library_f)(void)                                  = nullptr;
     void (*omnitrace_init_f)(const char*, bool, const char*)                = nullptr;
     void (*omnitrace_finalize_f)(void)                                      = nullptr;
@@ -269,6 +328,48 @@ public:
     int (*omnitrace_push_region_f)(const char*)                             = nullptr;
     int (*omnitrace_pop_region_f)(const char*)                              = nullptr;
     int (*omnitrace_user_configure_f)(int, void*, void*)                    = nullptr;
+
+    // KokkosP functions
+    void (*kokkosp_print_help_f)(char*)                                       = nullptr;
+    void (*kokkosp_parse_args_f)(int, char**)                                 = nullptr;
+    void (*kokkosp_declare_metadata_f)(const char*, const char*)              = nullptr;
+    void (*kokkosp_request_tool_settings_f)(const uint32_t,
+                                            Kokkos_Tools_ToolSettings*)       = nullptr;
+    void (*kokkosp_init_library_f)(const int, const uint64_t, const uint32_t,
+                                   void*)                                     = nullptr;
+    void (*kokkosp_finalize_library_f)()                                      = nullptr;
+    void (*kokkosp_begin_parallel_for_f)(const char*, uint32_t, uint64_t*)    = nullptr;
+    void (*kokkosp_end_parallel_for_f)(uint64_t)                              = nullptr;
+    void (*kokkosp_begin_parallel_reduce_f)(const char*, uint32_t, uint64_t*) = nullptr;
+    void (*kokkosp_end_parallel_reduce_f)(uint64_t)                           = nullptr;
+    void (*kokkosp_begin_parallel_scan_f)(const char*, uint32_t, uint64_t*)   = nullptr;
+    void (*kokkosp_end_parallel_scan_f)(uint64_t)                             = nullptr;
+    void (*kokkosp_begin_fence_f)(const char*, uint32_t, uint64_t*)           = nullptr;
+    void (*kokkosp_end_fence_f)(uint64_t)                                     = nullptr;
+    void (*kokkosp_push_profile_region_f)(const char*)                        = nullptr;
+    void (*kokkosp_pop_profile_region_f)()                                    = nullptr;
+    void (*kokkosp_create_profile_section_f)(const char*, uint32_t*)          = nullptr;
+    void (*kokkosp_destroy_profile_section_f)(uint32_t)                       = nullptr;
+    void (*kokkosp_start_profile_section_f)(uint32_t)                         = nullptr;
+    void (*kokkosp_stop_profile_section_f)(uint32_t)                          = nullptr;
+    void (*kokkosp_allocate_data_f)(const SpaceHandle, const char*, const void* const,
+                                    const uint64_t)                           = nullptr;
+    void (*kokkosp_deallocate_data_f)(const SpaceHandle, const char*, const void* const,
+                                      const uint64_t)                         = nullptr;
+    void (*kokkosp_begin_deep_copy_f)(SpaceHandle, const char*, const void*, SpaceHandle,
+                                      const char*, const void*, uint64_t)     = nullptr;
+    void (*kokkosp_end_deep_copy_f)()                                         = nullptr;
+    void (*kokkosp_profile_event_f)(const char*)                              = nullptr;
+    void (*kokkosp_dual_view_sync_f)(const char*, const void* const, bool)    = nullptr;
+    void (*kokkosp_dual_view_modify_f)(const char*, const void* const, bool)  = nullptr;
+
+    // HSA functions
+#if OMNITRACE_USE_ROCTRACER > 0
+    bool (*hsa_on_load_f)(HsaApiTable*, uint64_t, uint64_t, const char* const*) = nullptr;
+    void (*hsa_on_unload_f)()                                                   = nullptr;
+#endif
+
+    // OpenMP functions
 #if defined(OMNITRACE_USE_OMPT) && OMNITRACE_USE_OMPT > 0
     ompt_start_tool_result_t* (*ompt_start_tool_f)(unsigned int, const char*);
 #endif
@@ -556,6 +657,190 @@ extern "C"
         return OMNITRACE_DL_INVOKE(get_indirect().omnitrace_pop_region_f, name);
     }
 
+    //----------------------------------------------------------------------------------//
+    //
+    //      KokkosP
+    //
+    //----------------------------------------------------------------------------------//
+
+    void kokkosp_print_help(char* argv0)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_print_help_f, argv0);
+    }
+
+    void kokkosp_parse_args(int argc, char** argv)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_parse_args_f, argc, argv);
+    }
+
+    void kokkosp_declare_metadata(const char* key, const char* value)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_declare_metadata_f, key, value);
+    }
+
+    void kokkosp_request_tool_settings(const uint32_t             version,
+                                       Kokkos_Tools_ToolSettings* settings)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_request_tool_settings_f,
+                                   version, settings);
+    }
+
+    void kokkosp_init_library(const int loadSeq, const uint64_t interfaceVer,
+                              const uint32_t devInfoCount, void* deviceInfo)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_init_library_f, loadSeq,
+                                   interfaceVer, devInfoCount, deviceInfo);
+    }
+
+    void kokkosp_finalize_library()
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_finalize_library_f);
+    }
+
+    void kokkosp_begin_parallel_for(const char* name, uint32_t devid, uint64_t* kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_begin_parallel_for_f, name,
+                                   devid, kernid);
+    }
+
+    void kokkosp_end_parallel_for(uint64_t kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_end_parallel_for_f, kernid);
+    }
+
+    void kokkosp_begin_parallel_reduce(const char* name, uint32_t devid, uint64_t* kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_begin_parallel_reduce_f, name,
+                                   devid, kernid);
+    }
+
+    void kokkosp_end_parallel_reduce(uint64_t kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_end_parallel_reduce_f, kernid);
+    }
+
+    void kokkosp_begin_parallel_scan(const char* name, uint32_t devid, uint64_t* kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_begin_parallel_scan_f, name,
+                                   devid, kernid);
+    }
+
+    void kokkosp_end_parallel_scan(uint64_t kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_end_parallel_scan_f, kernid);
+    }
+
+    void kokkosp_begin_fence(const char* name, uint32_t devid, uint64_t* kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_begin_fence_f, name, devid,
+                                   kernid);
+    }
+
+    void kokkosp_end_fence(uint64_t kernid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_end_fence_f, kernid);
+    }
+
+    void kokkosp_push_profile_region(const char* name)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_push_profile_region_f, name);
+    }
+
+    void kokkosp_pop_profile_region()
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_pop_profile_region_f);
+    }
+
+    void kokkosp_create_profile_section(const char* name, uint32_t* secid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_create_profile_section_f, name,
+                                   secid);
+    }
+
+    void kokkosp_destroy_profile_section(uint32_t secid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_destroy_profile_section_f,
+                                   secid);
+    }
+
+    void kokkosp_start_profile_section(uint32_t secid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_start_profile_section_f, secid);
+    }
+
+    void kokkosp_stop_profile_section(uint32_t secid)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_stop_profile_section_f, secid);
+    }
+
+    void kokkosp_allocate_data(const SpaceHandle space, const char* label,
+                               const void* const ptr, const uint64_t size)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_allocate_data_f, space, label,
+                                   ptr, size);
+    }
+
+    void kokkosp_deallocate_data(const SpaceHandle space, const char* label,
+                                 const void* const ptr, const uint64_t size)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_deallocate_data_f, space, label,
+                                   ptr, size);
+    }
+
+    void kokkosp_begin_deep_copy(SpaceHandle dst_handle, const char* dst_name,
+                                 const void* dst_ptr, SpaceHandle src_handle,
+                                 const char* src_name, const void* src_ptr, uint64_t size)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_begin_deep_copy_f, dst_handle,
+                                   dst_name, dst_ptr, src_handle, src_name, src_ptr,
+                                   size);
+    }
+
+    void kokkosp_end_deep_copy()
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_end_deep_copy_f);
+    }
+
+    void kokkosp_profile_event(const char* name)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_profile_event_f, name);
+    }
+
+    void kokkosp_dual_view_sync(const char* label, const void* const data, bool is_device)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_dual_view_sync_f, label, data,
+                                   is_device);
+    }
+
+    void kokkosp_dual_view_modify(const char* label, const void* const data,
+                                  bool is_device)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().kokkosp_dual_view_modify_f, label, data,
+                                   is_device);
+    }
+
+    //----------------------------------------------------------------------------------//
+    //
+    //      HSA
+    //
+    //----------------------------------------------------------------------------------//
+
+#if OMNITRACE_USE_ROCTRACER > 0
+    bool OnLoad(HsaApiTable* table, uint64_t runtime_version, uint64_t failed_tool_count,
+                const char* const* failed_tool_names)
+    {
+        return OMNITRACE_DL_INVOKE(get_indirect().hsa_on_load_f, table, runtime_version,
+                                   failed_tool_count, failed_tool_names);
+    }
+
+    void OnUnload() { return OMNITRACE_DL_INVOKE(get_indirect().hsa_on_unload_f); }
+#endif
+
+    //----------------------------------------------------------------------------------//
+    //
+    //      OMPT
+    //
+    //----------------------------------------------------------------------------------//
 #if OMNITRACE_USE_OMPT > 0
     ompt_start_tool_result_t* ompt_start_tool(unsigned int omp_version,
                                               const char*  runtime_version)

projects/rocprofiler-systems/source/lib/omnitrace-dl/dl.hpp

@@ -53,6 +53,10 @@
 #    define OMNITRACE_USE_OMPT 0
 #endif
 
+#if !defined(OMNITRACE_USE_ROCTRACER)
+#    define OMNITRACE_USE_ROCTRACER 0
+#endif
+
 //--------------------------------------------------------------------------------------//
 //
 //      omnitrace symbols
@@ -87,12 +91,71 @@ extern "C"
     int omnitrace_user_push_region_dl(const char*) OMNITRACE_HIDDEN_API;
     int omnitrace_user_pop_region_dl(const char*) OMNITRACE_HIDDEN_API;
 
+    // KokkosP
+    struct OMNITRACE_HIDDEN_API SpaceHandle
+    {
+        char name[64];
+    };
+
+    struct OMNITRACE_HIDDEN_API Kokkos_Tools_ToolSettings
+    {
+        bool requires_global_fencing;
+        bool padding[255];
+    };
+
+    void kokkosp_print_help(char*) OMNITRACE_PUBLIC_API;
+    void kokkosp_parse_args(int, char**) OMNITRACE_PUBLIC_API;
+    void kokkosp_declare_metadata(const char*, const char*) OMNITRACE_PUBLIC_API;
+    void kokkosp_request_tool_settings(const uint32_t,
+                                       Kokkos_Tools_ToolSettings*) OMNITRACE_PUBLIC_API;
+    void kokkosp_init_library(const int, const uint64_t, const uint32_t,
+                              void*) OMNITRACE_PUBLIC_API;
+    void kokkosp_finalize_library() OMNITRACE_PUBLIC_API;
+    void kokkosp_begin_parallel_for(const char*, uint32_t,
+                                    uint64_t*) OMNITRACE_PUBLIC_API;
+    void kokkosp_end_parallel_for(uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_begin_parallel_reduce(const char*, uint32_t,
+                                       uint64_t*) OMNITRACE_PUBLIC_API;
+    void kokkosp_end_parallel_reduce(uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_begin_parallel_scan(const char*, uint32_t,
+                                     uint64_t*) OMNITRACE_PUBLIC_API;
+    void kokkosp_end_parallel_scan(uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_begin_fence(const char*, uint32_t, uint64_t*) OMNITRACE_PUBLIC_API;
+    void kokkosp_end_fence(uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_push_profile_region(const char*) OMNITRACE_PUBLIC_API;
+    void kokkosp_pop_profile_region() OMNITRACE_PUBLIC_API;
+    void kokkosp_create_profile_section(const char*, uint32_t*) OMNITRACE_PUBLIC_API;
+    void kokkosp_destroy_profile_section(uint32_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_start_profile_section(uint32_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_stop_profile_section(uint32_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_allocate_data(const SpaceHandle, const char*, const void* const,
+                               const uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_deallocate_data(const SpaceHandle, const char*, const void* const,
+                                 const uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_begin_deep_copy(SpaceHandle, const char*, const void*, SpaceHandle,
+                                 const char*, const void*, uint64_t) OMNITRACE_PUBLIC_API;
+    void kokkosp_end_deep_copy() OMNITRACE_PUBLIC_API;
+    void kokkosp_profile_event(const char*) OMNITRACE_PUBLIC_API;
+    void kokkosp_dual_view_sync(const char*, const void* const,
+                                bool) OMNITRACE_PUBLIC_API;
+    void kokkosp_dual_view_modify(const char*, const void* const,
+                                  bool) OMNITRACE_PUBLIC_API;
+
+    // OpenMP Tools (OMPT)
 #    if OMNITRACE_USE_OMPT > 0
     struct ompt_start_tool_result_t;
 
     ompt_start_tool_result_t* ompt_start_tool(unsigned int,
                                               const char*) OMNITRACE_PUBLIC_API;
 #    endif
+
+#    if OMNITRACE_USE_ROCTRACER > 0
+    // HSA
+    struct HsaApiTable;
+    bool OnLoad(HsaApiTable* table, uint64_t runtime_version, uint64_t failed_tool_count,
+                const char* const* failed_tool_names) OMNITRACE_PUBLIC_API;
+    void OnUnload() OMNITRACE_PUBLIC_API;
+#    endif
 #endif
 }
 

projects/rocprofiler-systems/source/lib/omnitrace/library/kokkosp.cpp

@@ -28,9 +28,11 @@
 #include "library/components/user_region.hpp"
 #include "library/config.hpp"
 #include "library/debug.hpp"
+#include "library/perfetto.hpp"
 #include "library/runtime.hpp"
 
 #include <timemory/api/kokkosp.hpp>
+#include <timemory/hash/types.hpp>
 
 namespace kokkosp = tim::kokkosp;
 
@@ -80,6 +82,19 @@ std::vector<std::string> _initialize_arguments   = {};
 
 extern "C"
 {
+    struct Kokkos_Tools_ToolSettings
+    {
+        bool requires_global_fencing;
+        bool padding[255];
+    };
+
+    void kokkosp_request_tool_settings(const uint32_t,
+                                       Kokkos_Tools_ToolSettings*) OMNITRACE_PUBLIC_API;
+    void kokkosp_dual_view_sync(const char*, const void* const,
+                                bool) OMNITRACE_PUBLIC_API;
+    void kokkosp_dual_view_modify(const char*, const void* const,
+                                  bool) OMNITRACE_PUBLIC_API;
+
     void kokkosp_print_help(char*) {}
 
     void kokkosp_parse_args(int argc, char** argv)
@@ -108,6 +123,12 @@ extern "C"
         tim::manager::add_metadata(key, value);
     }
 
+    void kokkosp_request_tool_settings(const uint32_t             _version,
+                                       Kokkos_Tools_ToolSettings* _settings)
+    {
+        if(_version > 0) _settings->requires_global_fencing = false;
+    }
+
     void kokkosp_init_library(const int loadSeq, const uint64_t interfaceVer,
                               const uint32_t devInfoCount, void* deviceInfo)
     {
@@ -117,7 +138,11 @@ extern "C"
         if(_standalone_initialized || (!omnitrace::config::settings_are_configured() &&
                                        omnitrace::get_state() < omnitrace::State::Active))
         {
-            OMNITRACE_BASIC_VERBOSE_F(0, "Initializing omnitrace...\n");
+            OMNITRACE_BASIC_VERBOSE_F(0,
+                                      "Initializing kokkos omnitrace connector "
+                                      "(standalone, sequence %d, version: %llu)...\n",
+                                      loadSeq, (unsigned long long) interfaceVer);
+            OMNITRACE_BASIC_VERBOSE_F(0, "Initializing omnitrace (standalone)... ");
             auto _mode = tim::get_env<std::string>("OMNITRACE_MODE", "trace");
             auto _arg0 = (_initialize_arguments.empty()) ? std::string{ "unknown" }
                                                          : _initialize_arguments.at(0);
@@ -125,19 +150,23 @@ extern "C"
             _standalone_initialized = true;
             omnitrace_set_mpi_hidden(false, false);
             omnitrace_init_hidden(_mode.c_str(), false, _arg0.c_str());
-            omnitrace_push_trace("kokkos_main");
+            omnitrace_push_trace_hidden("kokkos_main");
+        }
+        else
+        {
+            OMNITRACE_VERBOSE_F(0,
+                                "Initializing kokkos omnitrace connector "
+                                "(sequence %d, version: %llu)... ",
+                                loadSeq, (unsigned long long) interfaceVer);
         }
-
-        OMNITRACE_VERBOSE_F(0,
-                            "Initializing connector (sequence is %d, version: %llu)...",
-                            loadSeq, (unsigned long long) interfaceVer);
 
         setup_kernel_logger();
 
         tim::trait::runtime_enabled<kokkosp::memory_tracker>::set(
             omnitrace::config::get_use_timemory());
 
-        if(omnitrace::get_verbose() >= 0) fprintf(stderr, "Done\n");
+        if(_standalone_initialized && omnitrace::get_verbose() >= 0)
+            fprintf(stderr, "Done\n");
     }
 
     void kokkosp_finalize_library()
@@ -145,13 +174,14 @@ extern "C"
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         if(_standalone_initialized)
         {
-            omnitrace_pop_trace("kokkos_main");
-            OMNITRACE_VERBOSE_F(0, "Finalizing connector (standalone)...\n");
+            omnitrace_pop_trace_hidden("kokkos_main");
+            OMNITRACE_VERBOSE_F(
+                0, "Finalizing kokkos omnitrace connector (standalone)...\n");
             omnitrace_finalize_hidden();
         }
         else
         {
-            OMNITRACE_VERBOSE_F(0, "Finalizing connector... ");
+            OMNITRACE_VERBOSE_F(0, "Finalizing kokkos omnitrace connector... ");
             kokkosp::cleanup();
             if(omnitrace::get_verbose() >= 0) fprintf(stderr, "Done\n");
         }
@@ -253,6 +283,7 @@ extern "C"
 
     void kokkosp_push_profile_region(const char* name)
     {
+        if(omnitrace::get_use_perfetto()) return;  // perfetto doesn't support regions
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         kokkosp::logger_t{}.mark(1, __FUNCTION__, name);
         kokkosp::get_profiler_stack<omnitrace::component::user_region>().push_back(
@@ -262,6 +293,7 @@ extern "C"
 
     void kokkosp_pop_profile_region()
     {
+        if(omnitrace::get_use_perfetto()) return;  // perfetto doesn't support regions
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         kokkosp::logger_t{}.mark(-1, __FUNCTION__);
         if(kokkosp::get_profiler_stack<omnitrace::component::user_region>().empty())
@@ -274,6 +306,7 @@ extern "C"
 
     void kokkosp_create_profile_section(const char* name, uint32_t* secid)
     {
+        if(omnitrace::get_use_perfetto()) return;  // perfetto doesn't support regions
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         *secid     = kokkosp::get_unique_id();
         auto pname = TIMEMORY_JOIN(" ", "[kokkos]", name);
@@ -282,6 +315,7 @@ extern "C"
 
     void kokkosp_destroy_profile_section(uint32_t secid)
     {
+        if(omnitrace::get_use_perfetto()) return;  // perfetto doesn't support regions
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         kokkosp::destroy_profiler<omnitrace::component::user_region>(secid);
     }
@@ -290,6 +324,7 @@ extern "C"
 
     void kokkosp_start_profile_section(uint32_t secid)
     {
+        if(omnitrace::get_use_perfetto()) return;  // perfetto doesn't support regions
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         kokkosp::logger_t{}.mark(1, __FUNCTION__, secid);
         kokkosp::start_profiler<omnitrace::component::user_region>(secid);
@@ -297,6 +332,7 @@ extern "C"
 
     void kokkosp_stop_profile_section(uint32_t secid)
     {
+        if(omnitrace::get_use_perfetto()) return;  // perfetto doesn't support regions
         OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
         kokkosp::logger_t{}.mark(-1, __FUNCTION__, secid);
         kokkosp::start_profiler<omnitrace::component::user_region>(secid);
@@ -369,6 +405,32 @@ extern "C"
     }
 
     //----------------------------------------------------------------------------------//
+
+    void kokkosp_dual_view_sync(const char* label, const void* const, bool is_device)
+    {
+        OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
+        if(omnitrace::config::get_use_perfetto())
+        {
+            auto _name = tim::get_hash_identifier_fast(
+                tim::add_hash_id(TIMEMORY_JOIN(" ", "[kokkos][dual_view_sync]", label)));
+            TRACE_EVENT_INSTANT("user", ::perfetto::StaticString{ _name.data() },
+                                "target", (is_device) ? "device" : "host");
+        }
+    }
+
+    void kokkosp_dual_view_modify(const char* label, const void* const, bool is_device)
+    {
+        OMNITRACE_SCOPED_THREAD_STATE(ThreadState::Internal);
+        if(omnitrace::config::get_use_perfetto())
+        {
+            auto _name = tim::get_hash_identifier_fast(tim::add_hash_id(
+                TIMEMORY_JOIN(" ", "[kokkos][dual_view_modify]", label)));
+            TRACE_EVENT_INSTANT("user", ::perfetto::StaticString{ _name.data() },
+                                "target", (is_device) ? "device" : "host");
+        }
+    }
+
+    //----------------------------------------------------------------------------------//
 }
 
 TIMEMORY_INITIALIZE_STORAGE(kokkosp::memory_tracker)