diff options
Diffstat (limited to 'lib/layer_by_layer_profiler/src/layer_by_layer_profiler.cpp')
| -rw-r--r-- | lib/layer_by_layer_profiler/src/layer_by_layer_profiler.cpp | 113 |
1 files changed, 86 insertions, 27 deletions
diff --git a/lib/layer_by_layer_profiler/src/layer_by_layer_profiler.cpp b/lib/layer_by_layer_profiler/src/layer_by_layer_profiler.cpp index 0211414..a5b8e5a 100644 --- a/lib/layer_by_layer_profiler/src/layer_by_layer_profiler.cpp +++ b/lib/layer_by_layer_profiler/src/layer_by_layer_profiler.cpp @@ -39,17 +39,18 @@ uint64_t GetCurrentEthosuTicks(struct ethosu_driver *drv) { namespace tflite { -LayerByLayerProfiler::LayerByLayerProfiler(size_t max_events, Backend backend, int32_t event_id) : - max_events_(max_events), backend_(backend), event_id_(event_id), num_events_(0) { - - tags_ = std::make_unique<const char *[]>(max_events_); - start_ticks_ = std::make_unique<uint64_t[]>(max_events_); - end_ticks_ = std::make_unique<uint64_t[]>(max_events_); - - struct ethosu_driver *drv = ethosu_reserve_driver(); - ETHOSU_PMU_CNTR_Enable(drv, ETHOSU_PMU_CCNT_Msk); - ETHOSU_PMU_CYCCNT_Reset(drv); - ethosu_release_driver(drv); +LayerByLayerProfiler::LayerByLayerProfiler(const std::vector<uint8_t> &event_config, + bool pmu_cycle_counter_enable, + size_t max_events, + Backend backend, + int32_t event_id) : + pmu_event_config(event_config), + pmu_event_count(), pmu_cycle_counter_enable(pmu_cycle_counter_enable), pmu_cycle_counter_count(0), + max_events_(max_events), backend(backend), event_id(event_id), num_events_(0) { + + tags_ = std::make_unique<const char *[]>(max_events); + start_ticks_ = std::make_unique<uint64_t[]>(max_events); + end_ticks_ = std::make_unique<uint64_t[]>(max_events); } // NOTE: THIS PROFILER ONLY WORKS ON SYSTEMS WITH 1 NPU @@ -62,17 +63,44 @@ uint32_t LayerByLayerProfiler::BeginEvent(const char *tag) { tags_[num_events_] = tag; if (strcmp("ethos-u", tag) == 0) { - struct ethosu_driver *ethosu_drv = ethosu_reserve_driver(); - ETHOSU_PMU_CYCCNT_Reset(ethosu_drv); - ETHOSU_PMU_PMCCNTR_CFG_Set_Start_Event(ethosu_drv, ETHOSU_PMU_NPU_ACTIVE); - ETHOSU_PMU_PMCCNTR_CFG_Set_Stop_Event(ethosu_drv, ETHOSU_PMU_NPU_IDLE); - start_ticks_[num_events_] = GetCurrentEthosuTicks(ethosu_drv); - ethosu_release_driver(ethosu_drv); + struct ethosu_driver *drv = ethosu_reserve_driver(); + size_t numEventCounters = ETHOSU_PMU_Get_NumEventCounters(); + + if (pmu_event_config.size() > numEventCounters) { + LOG_WARN("PMU event config list is bigger (%lu) than available PMU event counters (%lu)", + pmu_event_config.size(), + numEventCounters); + LOG_WARN("PMU event config list will be truncated"); + pmu_event_config.resize(numEventCounters); + } + // Enable PMU + ETHOSU_PMU_Enable(drv); + + for (size_t i = 0; i < pmu_event_config.size(); i++) { + ETHOSU_PMU_Set_EVTYPER(drv, i, static_cast<ethosu_pmu_event_type>(pmu_event_config[i])); + } + + ETHOSU_PMU_CNTR_Enable(drv, (1 << pmu_event_config.size()) - 1); + ETHOSU_PMU_EVCNTR_ALL_Reset(drv); + + // Configure the cycle counter + if (pmu_cycle_counter_enable) { + ETHOSU_PMU_CNTR_Disable(drv, ETHOSU_PMU_CCNT_Msk); + ETHOSU_PMU_CYCCNT_Reset(drv); + + ETHOSU_PMU_PMCCNTR_CFG_Set_Stop_Event(drv, ETHOSU_PMU_NPU_IDLE); + ETHOSU_PMU_PMCCNTR_CFG_Set_Start_Event(drv, ETHOSU_PMU_NPU_ACTIVE); + + ETHOSU_PMU_CNTR_Enable(drv, ETHOSU_PMU_CCNT_Msk); + } + start_ticks_[num_events_] = 0; // Hardware cycle counter has been reset above, thus starts at 0 + ethosu_release_driver(drv); } else { start_ticks_[num_events_] = GetCurrentTimeTicks(); } - end_ticks_[num_events_] = start_ticks_[num_events_] - 1; + end_ticks_[num_events_] = + start_ticks_[num_events_]; // NOTE: In case an EndEvent() doesn't trigger, cycles reports as 0 return num_events_++; } @@ -81,19 +109,42 @@ void LayerByLayerProfiler::EndEvent(uint32_t event_handle) { TFLITE_DCHECK(event_handle < max_events_); if (strcmp("ethos-u", tags_[event_handle]) == 0) { - struct ethosu_driver *ethosu_drv = ethosu_reserve_driver(); - end_ticks_[event_handle] = GetCurrentEthosuTicks(ethosu_drv); - ethosu_release_driver(ethosu_drv); + struct ethosu_driver *drv = ethosu_reserve_driver(); + + end_ticks_[event_handle] = GetCurrentEthosuTicks(drv); + // Get the cycle count + if (pmu_cycle_counter_enable) { + pmu_cycle_counter_count = end_ticks_[event_handle]; + } + + // Save the PMU counter values + // NOTE: If multiple ethos-u layers, only the latest will be saved + pmu_event_count.resize(pmu_event_config.size()); + for (size_t i = 0; i < pmu_event_config.size(); i++) { + pmu_event_count[i] = ETHOSU_PMU_Get_EVCNTR(drv, i); + } + + // Shut down the PMU + ETHOSU_PMU_Disable(drv); + + ethosu_release_driver(drv); } else { end_ticks_[event_handle] = GetCurrentTimeTicks(); } - if (backend_ == PRINTF) { - LOG("%s : cycle_cnt : %" PRIu64 " cycles\n", - tags_[event_handle], - end_ticks_[event_handle] - start_ticks_[event_handle]); + if (backend == PRINTF) { + if (strcmp("ethos-u", tags_[event_handle]) == 0) { + for (size_t i = 0; i < pmu_event_count.size(); i++) { + LOG("ethos-u : ethosu_pmu_cntr%lu : %u\n", i, pmu_event_count[i]); + } + LOG("ethos-u : cycle_cnt : %" PRIu64 " cycles\n", pmu_cycle_counter_count); + } else { + LOG("%s : cycle_cnt : %" PRIu64 " cycles\n", + tags_[event_handle], + end_ticks_[event_handle] - start_ticks_[event_handle]); + } } else { - EventRecord2(event_id_, (int32_t)event_handle, end_ticks_[event_handle] - start_ticks_[event_handle]); + EventRecord2(event_id, (int32_t)event_handle, end_ticks_[event_handle] - start_ticks_[event_handle]); } } @@ -107,10 +158,18 @@ uint64_t LayerByLayerProfiler::GetTotalTicks() const { return ticks; } +uint64_t LayerByLayerProfiler::GetPmuCycleCounterCount() const { + return pmu_cycle_counter_count; +} + +const std::vector<uint32_t> &LayerByLayerProfiler::GetPmuEventCount() const { + return pmu_event_count; +} + void LayerByLayerProfiler::Log() const { #if !defined(TF_LITE_STRIP_ERROR_STRINGS) - if (backend_ == PRINTF) { + if (backend == PRINTF) { for (size_t i = 0; i < num_events_; ++i) { uint64_t ticks = end_ticks_[i] - start_ticks_[i]; LOG("%s took %" PRIu64 " cycles", tags_[i], ticks); |