rocm-systems/rdc_libs/rdc_modules/rdc_rocp/RdcRocpBase.cc

/*
Copyright (c) 2022 - present Advanced Micro Devices, Inc. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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*/

#include "rdc_modules/rdc_rocp/RdcRocpBase.h"

#include <rocprofiler-sdk/fwd.h>
#include <rocprofiler-sdk/registration.h>
#include <rocprofiler-sdk/rocprofiler.h>
#include <sys/wait.h>
#include <unistd.h>

#include <algorithm>
#include <cassert>
#include <chrono>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <stdexcept>
#include <vector>

// #include "hsa.h"
#include "rdc/rdc.h"
#include "rdc_lib/RdcLogger.h"
#include "rdc_lib/RdcTelemetryLibInterface.h"
#include "rdc_modules/rdc_rocp/RdcRocpCounterSampler.h"

namespace amd {
namespace rdc {

double RdcRocpBase::run_profiler(uint32_t gpu_index, rdc_field_t field) {
  thread_local std::vector<rocprofiler_record_counter_t> records;

  // initialize hsa. hsa_init() will also load the profiler libs under the hood
  hsa_status_t status = HSA_STATUS_SUCCESS;

  auto counter_sampler = CounterSampler::get_samplers()[gpu_index];
  if (!counter_sampler) {
    RDC_LOG(RDC_ERROR, "Error: Counter sampler not found for GPU index " << gpu_index << std::endl);
    throw std::runtime_error("Counter sampler not found");
  }

  auto field_it = field_to_metric.find(field);
  if (field_it == field_to_metric.end()) {
    RDC_LOG(RDC_ERROR,
            "Error: Field " << field << " not found in field_to_metric map." << std::endl);
    throw std::out_of_range("Field not found in field_to_metric map");
  }
  const std::string& metric_id = field_it->second;

  try {
    counter_sampler->sample_counter_values({metric_id}, records, collection_duration_us_k);
  } catch (const std::exception& e) {
    RDC_LOG(RDC_ERROR, "Error while sampling counter values: " << e.what() << std::endl);
    throw;
  }

  // Aggregate counter values. Rocprof v1/v2 summed values across dimensions.
  double value = 0.0;
  for (auto& record : records) {
    value += record.counter_value;  // Summing up values from all dimensions.
  }

  return value;
}

const char* RdcRocpBase::get_field_id_from_name(rdc_field_t field) {
  auto it = field_to_metric.find(field);
  if (it == field_to_metric.end()) {
    RDC_LOG(RDC_ERROR,
            "Error: Field ID " << field << " not found in field_to_metric map." << std::endl);
    throw std::out_of_range("Field ID not found in field_to_metric map");
  }

  return field_to_metric.at(field);
}

const std::vector<rdc_field_t> RdcRocpBase::get_field_ids() {
  std::vector<rdc_field_t> field_ids;
  for (auto& [k, v] : field_to_metric) {
    field_ids.push_back(k);
  }
  return field_ids;
}

RdcRocpBase::RdcRocpBase() {
  // all fields
  static const std::map<rdc_field_t, const char*> temp_field_map_k = {
      {RDC_FI_PROF_OCCUPANCY_PERCENT, "OccupancyPercent"},
      {RDC_FI_PROF_ACTIVE_CYCLES, "GRBM_GUI_ACTIVE"},
      {RDC_FI_PROF_ACTIVE_WAVES, "SQ_WAVES"},
      {RDC_FI_PROF_ELAPSED_CYCLES, "GRBM_COUNT"},
      {RDC_FI_PROF_TENSOR_ACTIVE_PERCENT,
       "MfmaUtil"},  // same as TENSOR_ACTIVE but available for more GPUs
      {RDC_FI_PROF_GPU_UTIL_PERCENT, "GPU_UTIL"},
      // metrics below are divided by time passed
      {RDC_FI_PROF_EVAL_MEM_R_BW, "FETCH_SIZE"},
      {RDC_FI_PROF_EVAL_MEM_W_BW, "WRITE_SIZE"},
      {RDC_FI_PROF_EVAL_FLOPS_16, "TOTAL_16_OPS"},
      {RDC_FI_PROF_EVAL_FLOPS_32, "TOTAL_32_OPS"},
      {RDC_FI_PROF_EVAL_FLOPS_64, "TOTAL_64_OPS"},
      {RDC_FI_PROF_VALU_PIPE_ISSUE_UTIL, "ValuPipeIssueUtil"},
  };

  hsa_status_t status = hsa_init();
  if (status != HSA_STATUS_SUCCESS) {
    const char* errstr = nullptr;
    hsa_status_string(status, &errstr);
    throw std::runtime_error("hsa error code: " + std::to_string(status) + " " + errstr);
  }

  // check rocprofiler
  if (int rocp_status = 0;
      rocprofiler_is_initialized(&rocp_status) == ROCPROFILER_STATUS_SUCCESS && rocp_status != 1) {
    throw std::runtime_error("Rocprofiler is not initialized. status: " +
                             std::to_string(rocp_status));
  }

  std::vector<std::string> all_fields;
  std::vector<std::string> checked_fields;

  // populate list of agents
  agents = CounterSampler::get_available_agents();
  RDC_LOG(RDC_DEBUG, "Agent count: " << agents.size());
  samplers = CounterSampler::get_samplers();

  // populate fields
  for (auto& [k, v] : temp_field_map_k) {
    all_fields.push_back(v);
  }

  // find intersection of supported and requested fields
  for (uint32_t gpu_index = 0; gpu_index < agents.size(); gpu_index++) {
    auto& cs = *samplers[gpu_index];
    RDC_LOG(RDC_DEBUG,
            "gpu_index[" << gpu_index << "] = node_id[" << agents[gpu_index].node_id << "]");
    for (auto& [str, id] : cs.get_supported_counters(cs.get_agent())) {
      checked_fields.emplace_back(str);
    }

    for (auto& [k, v] : temp_field_map_k) {
      auto found = std::find(checked_fields.begin(), checked_fields.end(), v);
      if (found != checked_fields.end()) {
        field_to_metric.insert({k, v});
      }
    }
  }

  RDC_LOG(RDC_DEBUG, "Rocprofiler supports " << field_to_metric.size() << " fields");
}

RdcRocpBase::~RdcRocpBase() {
  hsa_status_t status = HSA_STATUS_SUCCESS;
  status = hsa_shut_down();
  assert(status == HSA_STATUS_SUCCESS);
  status = hsa_shut_down();
  assert(status == HSA_STATUS_ERROR_NOT_INITIALIZED);
}

rdc_status_t RdcRocpBase::rocp_lookup(rdc_gpu_field_t gpu_field, double* value) {
  const auto& gpu_index = gpu_field.gpu_index;
  const auto& field = gpu_field.field_id;

  if (value == nullptr) {
    return RDC_ST_BAD_PARAMETER;
  }

  const auto start_time = std::chrono::high_resolution_clock::now();
  *value = run_profiler(gpu_index, field);
  const auto stop_time = std::chrono::high_resolution_clock::now();
  // extra processing required
  if (eval_fields.find(field) != eval_fields.end()) {
    const auto elapsed =
        std::chrono::duration_cast<std::chrono::milliseconds>(stop_time - start_time).count();
    *value = *value / elapsed;
  }
  // GPU_UTIL metric is available on more GPUs than ENGINE_ACTIVE.
  // ENGINE_ACTIVE = GPU_UTIL/100, so do the math ourselves
  if (field == RDC_FI_PROF_GPU_UTIL_PERCENT) {
    *value = *value / 100.0F;
  }
  return RDC_ST_OK;
}

}  // namespace rdc
}  // namespace amd