text: /**
  * Copyright (C) Mellanox Technologies Ltd. 2001-2014.  ALL RIGHTS RESERVED.
  * Copyright (C) The University of Tennessee and The University 
  *               of Tennessee Research Foundation. 2015. ALL RIGHTS RESERVED.
  * Copyright (C) UT-Battelle, LLC. 2015. ALL RIGHTS RESERVED.
  *
  * See file LICENSE for terms.
  */
  
  
  #ifdef HAVE_CONFIG_H
  #  include "config.h"
  #endif
  
  #include "libperf.h"
  #include "libperf_int.h"
  
  #include <ucs/sys/string.h>
  #include <ucs/sys/sys.h>
  #include <ucs/debug/log.h>
  #include <sys/socket.h>
  #include <arpa/inet.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <unistd.h>
  #include <netdb.h>
  #include <getopt.h>
  #include <string.h>
  #include <sys/types.h>
  #include <sys/poll.h>
  #include <locale.h>
  #if HAVE_MPI
  #  include <mpi.h>
  #elif HAVE_RTE
  #   include<rte.h>
  #endif
  
  #define MAX_BATCH_FILES  32
  
  
  enum {
      TEST_FLAG_PRINT_RESULTS = UCS_BIT(0),
      TEST_FLAG_PRINT_TEST    = UCS_BIT(1),
      TEST_FLAG_SET_AFFINITY  = UCS_BIT(8),
      TEST_FLAG_NUMERIC_FMT   = UCS_BIT(9),
      TEST_FLAG_PRINT_FINAL   = UCS_BIT(10),
      TEST_FLAG_PRINT_CSV     = UCS_BIT(11)
  };
  
  typedef struct sock_rte_group {
      int                          is_server;
      int                          connfd;
  } sock_rte_group_t;
  
  
  typedef struct test_type {
      const char                   *name;
      ucx_perf_api_t               api;
      ucx_perf_cmd_t               command;
      ucx_perf_test_type_t         test_type;
      const char                   *desc;
  } test_type_t;
  
  
  struct perftest_context {
      ucx_perf_params_t            params;
      const char                   *server_addr;
      int                          port;
      int                          mpi;
      unsigned                     cpu;
      unsigned                     flags;
  
      unsigned                     num_batch_files;
      char                         *batch_files[MAX_BATCH_FILES];
      char                         *test_names[MAX_BATCH_FILES];
  
      sock_rte_group_t             sock_rte_group;
  };
  
  #define TEST_PARAMS_ARGS   "t:n:s:W:O:w:D:i:H:oSCqM:r:T:d:x:A:BUm:"
  
  
  test_type_t tests[] = {
      {"am_lat", UCX_PERF_API_UCT, UCX_PERF_CMD_AM, UCX_PERF_TEST_TYPE_PINGPONG,
       "active message latency"},
  
      {"put_lat", UCX_PERF_API_UCT, UCX_PERF_CMD_PUT, UCX_PERF_TEST_TYPE_PINGPONG,
       "put latency"},
  
      {"add_lat", UCX_PERF_API_UCT, UCX_PERF_CMD_ADD, UCX_PERF_TEST_TYPE_PINGPONG,
       "atomic add latency"},
  
      {"get", UCX_PERF_API_UCT, UCX_PERF_CMD_GET, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "get latency / bandwidth / message rate"},
  
      {"fadd", UCX_PERF_API_UCT, UCX_PERF_CMD_FADD, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "atomic fetch-and-add latency / message rate"},
  
      {"swap", UCX_PERF_API_UCT, UCX_PERF_CMD_SWAP, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "atomic swap latency / message rate"},
  
      {"cswap", UCX_PERF_API_UCT, UCX_PERF_CMD_CSWAP, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "atomic compare-and-swap latency / message rate"},
  
      {"am_bw", UCX_PERF_API_UCT, UCX_PERF_CMD_AM, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "active message bandwidth / message rate"},
  
      {"put_bw", UCX_PERF_API_UCT, UCX_PERF_CMD_PUT, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "put bandwidth / message rate"},
  
      {"add_mr", UCX_PERF_API_UCT, UCX_PERF_CMD_ADD, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "atomic add message rate"},
  
      {"tag_lat", UCX_PERF_API_UCP, UCX_PERF_CMD_TAG, UCX_PERF_TEST_TYPE_PINGPONG,
       "UCP tag match latency"},
  
      {"tag_bw", UCX_PERF_API_UCP, UCX_PERF_CMD_TAG, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP tag match bandwidth"},
  
      {"tag_sync_lat", UCX_PERF_API_UCP, UCX_PERF_CMD_TAG_SYNC, UCX_PERF_TEST_TYPE_PINGPONG,
       "UCP tag sync match latency"},
  
      {"tag_sync_bw", UCX_PERF_API_UCP, UCX_PERF_CMD_TAG_SYNC, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP tag sync match bandwidth"},
  
      {"ucp_put_lat", UCX_PERF_API_UCP, UCX_PERF_CMD_PUT, UCX_PERF_TEST_TYPE_PINGPONG,
       "UCP put latency"},
  
      {"ucp_put_bw", UCX_PERF_API_UCP, UCX_PERF_CMD_PUT, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP put bandwidth"},
  
      {"ucp_get", UCX_PERF_API_UCP, UCX_PERF_CMD_GET, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP get latency / bandwidth / message rate"},
  
      {"ucp_add", UCX_PERF_API_UCP, UCX_PERF_CMD_ADD, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP atomic add bandwidth / message rate"},
  
      {"ucp_fadd", UCX_PERF_API_UCP, UCX_PERF_CMD_FADD, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP atomic fetch-and-add latency / bandwidth / message rate"},
  
      {"ucp_swap", UCX_PERF_API_UCP, UCX_PERF_CMD_SWAP, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP atomic swap latency / bandwidth / message rate"},
  
      {"ucp_cswap", UCX_PERF_API_UCP, UCX_PERF_CMD_CSWAP, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP atomic compare-and-swap latency / bandwidth / message rate"},
  
      {"stream_bw", UCX_PERF_API_UCP, UCX_PERF_CMD_STREAM, UCX_PERF_TEST_TYPE_STREAM_UNI,
       "UCP stream bandwidth"},
  
      {"stream_lat", UCX_PERF_API_UCP, UCX_PERF_CMD_STREAM, UCX_PERF_TEST_TYPE_PINGPONG,
       "UCP stream latency"},
  
       {NULL}
  };
  
  static int sock_io(int sock, ssize_t (*sock_call)(int, void *, size_t, int),
                     int poll_events, void *data, size_t size,
                     void (*progress)(void *arg), void *arg, const char *name)
  {
      size_t total = 0;
      struct pollfd pfd;
      int ret;
  
      while (total < size) {
          pfd.fd      = sock;
          pfd.events  = poll_events;
          pfd.revents = 0;
  
          ret = poll(&pfd, 1, 1); /* poll for 1ms */
          if (ret > 0) {
              ucs_assert(ret == 1);
              ucs_assert(pfd.revents & poll_events);
  
              ret = sock_call(sock, (char*)data + total, size - total, 0);
              if (ret < 0) {
                  ucs_error("%s() failed: %m", name);
                  return -1;
              }
              total += ret;
          } else if ((ret < 0) && (errno != EINTR)) {
              ucs_error("poll(fd=%d) failed: %m", sock);
              return -1;
          }
  
          /* progress user context */
          if (progress != NULL) {
              progress(arg);
          }
      }
      return 0;
  }
  
  static int safe_send(int sock, void *data, size_t size,
                       void (*progress)(void *arg), void *arg)
  {
      return sock_io(sock, (void*)send, POLLOUT, data, size, progress, arg, "send");
  }
  
  static int safe_recv(int sock, void *data, size_t size,
                       void (*progress)(void *arg), void *arg)
  {
      return sock_io(sock, recv, POLLIN, data, size, progress, arg, "recv");
  }
  
  static void print_progress(char **test_names, unsigned num_names,
                             const ucx_perf_result_t *result, unsigned flags,
                             int final)
  {
      static const char *fmt_csv     =  "%.0f,%.3f,%.3f,%.3f,%.2f,%.2f,%.0f,%.0f\n";
      static const char *fmt_numeric =  "%'14.0f %9.3f %9.3f %9.3f %10.2f %10.2f %'11.0f %'11.0f\n";
      static const char *fmt_plain   =  "%14.0f %9.3f %9.3f %9.3f %10.2f %10.2f %11.0f %11.0f\n";
      unsigned i;
  
      if (!(flags & TEST_FLAG_PRINT_RESULTS) ||
          (!final && (flags & TEST_FLAG_PRINT_FINAL)))
      {
          return;
      }
  
      if (flags & TEST_FLAG_PRINT_CSV) {
          for (i = 0; i < num_names; ++i) {
              printf("%s,", test_names[i]);
          }
      }
  
      printf((flags & TEST_FLAG_PRINT_CSV)   ? fmt_csv :
             (flags & TEST_FLAG_NUMERIC_FMT) ? fmt_numeric :
                                               fmt_plain,
             (double)result->iters,
             result->latency.typical * 1000000.0,
             result->latency.moment_average * 1000000.0,
             result->latency.total_average * 1000000.0,
             result->bandwidth.moment_average / (1024.0 * 1024.0),
             result->bandwidth.total_average / (1024.0 * 1024.0),
             result->msgrate.moment_average,
             result->msgrate.total_average);
      fflush(stdout);
  }
  
  static void print_header(struct perftest_context *ctx)
  {
      const char *test_api_str;
      const char *test_data_str;
      test_type_t *test;
      unsigned i;
  
      if (ctx->flags & TEST_FLAG_PRINT_TEST) {
          for (test = tests; test->name; ++test) {
              if ((test->command == ctx->params.command) && (test->test_type == ctx->params.test_type)) {
                  break;
              }
          }
          if (test->name != NULL) {
              if (test->api == UCX_PERF_API_UCT) {
                  test_api_str = "transport layer";
                  switch (ctx->params.uct.data_layout) {
                  case UCT_PERF_DATA_LAYOUT_SHORT:
                      test_data_str = "short";
                      break;
                  case UCT_PERF_DATA_LAYOUT_BCOPY:
                      test_data_str = "bcopy";
                      break;
                  case UCT_PERF_DATA_LAYOUT_ZCOPY:
                      test_data_str = "zcopy";
                      break;
                  default:
                      test_data_str = "(undefined)";
                      break;
                  }
              } else if (test->api == UCX_PERF_API_UCP) {
                  test_api_str = "protocol layer";
                  test_data_str = "(automatic)"; /* TODO contig/stride/stream */
              } else {
                  return;
              }
  
              printf("+------------------------------------------------------------------------------------------+\n");
              printf("| API:          %-60s               |\n", test_api_str);
              printf("| Test:         %-60s               |\n", test->desc);
              printf("| Data layout:  %-60s               |\n", test_data_str);
              printf("| Message size: %-60zu               |\n", ucx_perf_get_message_size(&ctx->params));
          }
      }
  
      if (ctx->flags & TEST_FLAG_PRINT_CSV) {
          if (ctx->flags & TEST_FLAG_PRINT_RESULTS) {
              for (i = 0; i < ctx->num_batch_files; ++i) {
                  printf("%s,", basename(ctx->batch_files[i]));
              }
              printf("iterations,typical_lat,avg_lat,overall_lat,avg_bw,overall_bw,avg_mr,overall_mr\n");
          }
      } else {
          if (ctx->flags & TEST_FLAG_PRINT_RESULTS) {
              printf("+--------------+-----------------------------+---------------------+-----------------------+\n");
              printf("|              |       latency (usec)        |   bandwidth (MB/s)  |  message rate (msg/s) |\n");
              printf("+--------------+---------+---------+---------+----------+----------+-----------+-----------+\n");
              printf("| # iterations | typical | average | overall |  average |  overall |   average |   overall |\n");
              printf("+--------------+---------+---------+---------+----------+----------+-----------+-----------+\n");
          } else if (ctx->flags & TEST_FLAG_PRINT_TEST) {
              printf("+------------------------------------------------------------------------------------------+\n");
          }
      }
  }
  
  static void print_test_name(struct perftest_context *ctx)
  {
      char buf[200];
      unsigned i, pos;
  
      if (!(ctx->flags & TEST_FLAG_PRINT_CSV) && (ctx->num_batch_files > 0)) {
          strcpy(buf, "+--------------+---------+---------+---------+----------+----------+-----------+-----------+");
  
          pos = 1;
          for (i = 0; i < ctx->num_batch_files; ++i) {
             if (i != 0) {
                 buf[pos++] = '/';
             }
             memcpy(&buf[pos], ctx->test_names[i],
                    ucs_min(strlen(ctx->test_names[i]), sizeof(buf) - pos - 1));
             pos += strlen(ctx->test_names[i]);
          }
  
          if (ctx->flags & TEST_FLAG_PRINT_RESULTS) {
              printf("%s\n", buf);
          }
      }
  }
  
  static void usage(const struct perftest_context *ctx, const char *program)
  {
      test_type_t *test;
      int UCS_V_UNUSED rank;
  
  #if HAVE_MPI
      MPI_Comm_rank(MPI_COMM_WORLD, &rank);
      if (ctx->mpi && (rank != 0)) {
          return;
      }
  #endif
  
  #if HAVE_MPI
      printf("  Note: test can be also launched as an MPI application\n");
      printf("\n");
  #elif HAVE_RTE
      printf("  Note: this test can be also launched as an libRTE application\n");
      printf("\n");
  #endif
      printf("  Usage: %s [ server-hostname ] [ options ]\n", program);
      printf("\n");
      printf("  Common options:\n");
      printf("     -t <test>      test to run:\n");
      for (test = tests; test->name; ++test) {
          printf("                   %11s - %s\n", test->name, test->desc);
      }
      printf("     -s <size>      list of scatter-gather sizes for single message (%zu)\n",
                                  ctx->params.msg_size_list[0]);
      printf("                    for example: \"-s 16,48,8192,8192,14\"\n");
      printf("     -n <iters>     number of iterations to run (%ld)\n", ctx->params.max_iter);
      printf("     -w <iters>     number of warm-up iterations (%zu)\n",
                                  ctx->params.warmup_iter);
      printf("     -c <cpu>       set affinity to this CPU (off)\n");
      printf("     -O <count>     maximal number of uncompleted outstanding sends (%u)\n",
                                  ctx->params.max_outstanding);
      printf("     -i <offset>    distance between consecutive scatter-gather entries (%zu)\n",
                                  ctx->params.iov_stride);
      printf("     -T <threads>   number of threads in the test (%d), if >1 implies \"-M multi\" for UCP\n",
                                  ctx->params.thread_count);
      printf("     -B             register memory with NONBLOCK flag\n");
      printf("     -b <file>      read and execute tests from a batch file: every line in the\n");
      printf("                    file is a test to run, first word is test name, the rest of\n");
      printf("                    the line is command-line arguments for the test.\n");
      printf("     -p <port>      TCP port to use for data exchange (%d)\n", ctx->port);
  #if HAVE_MPI
      printf("     -P <0|1>       disable/enable MPI mode (%d)\n", ctx->mpi);
  #endif
      printf("     -m <mem type>  memory type of messages\n");
      printf("                        host - system memory(default)\n");
  #if HAVE_CUDA
      printf("                        cuda - NVIDIA GPU memory\n");
      printf("                        cuda-managed - NVIDIA cuda managed/unified memory\n");
  #endif
      printf("     -h             show this help message\n");
      printf("\n");
      printf("  Output format:\n");
      printf("     -N             use numeric formatting (thousands separator)\n");
      printf("     -f             print only final numbers\n");
      printf("     -v             print CSV-formatted output\n");
      printf("\n");
      printf("  UCT only:\n");
      printf("     -d <device>    device to use for testing\n");
      printf("     -x <tl>        transport to use for testing\n");
      printf("     -D <layout>    data layout for sender side:\n");
      printf("                        short - short messages API (default, cannot be used for get)\n");
      printf("                        bcopy - copy-out API (cannot be used for atomics)\n");
      printf("                        zcopy - zero-copy API (cannot be used for atomics)\n");
      printf("                        iov    - scatter-gather list (iovec)\n");
      printf("     -W <count>     flow control window size, for active messages (%u)\n",
                                  ctx->params.uct.fc_window);
      printf("     -H <size>      active message header size (%zu)\n",
                                  ctx->params.am_hdr_size);
      printf("     -A <mode>      asynchronous progress mode (thread)\n");
      printf("                        thread - separate progress thread\n");
      printf("                        signal - signal-based timer\n");
      printf("\n");
      printf("  UCP only:\n");
      printf("     -M <thread>    thread support level for progress engine (single)\n");
      printf("                        single     - only the master thread can access\n");
      printf("                        serialized - one thread can access at a time\n");
      printf("                        multi      - multiple threads can access\n");
      printf("     -D <layout>[,<layout>]\n");
      printf("                    data layout for sender and receiver side (contig)\n");
      printf("                        contig - Continuous datatype\n");
      printf("                        iov    - Scatter-gather list\n");
      printf("     -C             use wild-card tag for tag tests\n");
      printf("     -U             force unexpected flow by using tag probe\n");
      printf("     -r <mode>      receive mode for stream tests (recv)\n");
      printf("                        recv       : Use ucp_stream_recv_nb\n");
      printf("                        recv_data  : Use ucp_stream_recv_data_nb\n");
      printf("\n");
  }
  
  static const char *__basename(const char *path)
  {
      const char *p = strrchr(path, '/');
      return (p == NULL) ? path : (p + 1);
  }
  
  static ucs_status_t parse_ucp_datatype_params(const char *optarg,
                                                ucp_perf_datatype_t *datatype)
  {
      const char  *iov_type         = "iov";
      const size_t iov_type_size    = strlen("iov");
      const char  *contig_type      = "contig";
      const size_t contig_type_size = strlen("contig");
  
      if (0 == strncmp(optarg, iov_type, iov_type_size)) {
          *datatype = UCP_PERF_DATATYPE_IOV;
      } else if (0 == strncmp(optarg, contig_type, contig_type_size)) {
          *datatype = UCP_PERF_DATATYPE_CONTIG;
      } else {
          return UCS_ERR_INVALID_PARAM;
      }
  
      return UCS_OK;
  }
  
  static ucs_status_t parse_message_sizes_params(const char *optarg,
                                                 ucx_perf_params_t *params)
  {
      char *optarg_ptr, *optarg_ptr2;
      size_t token_num, token_it;
      const char delim = ',';
  
      optarg_ptr = (char *)optarg;
      token_num  = 0;
      /* count the number of given message sizes */
      while ((optarg_ptr = strchr(optarg_ptr, delim)) != NULL) {
          ++optarg_ptr;
          ++token_num;
      }
      ++token_num;
  
      params->msg_size_list = realloc(params->msg_size_list,
                                      sizeof(*params->msg_size_list) * token_num);
      if (NULL == params->msg_size_list) {
          return UCS_ERR_NO_MEMORY;
      }
  
      optarg_ptr = (char *)optarg;
      errno = 0;
      for (token_it = 0; token_it < token_num; ++token_it) {
          params->msg_size_list[token_it] = strtoul(optarg_ptr, &optarg_ptr2, 10);
          if (((ERANGE == errno) && (ULONG_MAX == params->msg_size_list[token_it])) ||
              ((errno != 0) && (params->msg_size_list[token_it] == 0)) ||
              (optarg_ptr == optarg_ptr2)) {
              free(params->msg_size_list);
              params->msg_size_list = NULL; /* prevent double free */
              ucs_error("Invalid option substring argument at position %lu", token_it);
              return UCS_ERR_INVALID_PARAM;
          }
          optarg_ptr = optarg_ptr2 + 1;
      }
  
      params->msg_size_cnt = token_num;
      return UCS_OK;
  }
  
  static void init_test_params(ucx_perf_params_t *params)
  {
      memset(params, 0, sizeof(*params));
      params->api             = UCX_PERF_API_LAST;
      params->command         = UCX_PERF_CMD_LAST;
      params->test_type       = UCX_PERF_TEST_TYPE_LAST;
      params->thread_mode     = UCS_THREAD_MODE_SINGLE;
      params->thread_count    = 1;
      params->async_mode      = UCS_ASYNC_MODE_THREAD;
      params->wait_mode       = UCX_PERF_WAIT_MODE_LAST;
      params->max_outstanding = 1;
      params->warmup_iter     = 10000;
      params->am_hdr_size     = 8;
      params->alignment       = ucs_get_page_size();
      params->max_iter        = 1000000l;
      params->max_time        = 0.0;
      params->report_interval = 1.0;
      params->flags           = UCX_PERF_TEST_FLAG_VERBOSE;
      params->uct.fc_window   = UCT_PERF_TEST_MAX_FC_WINDOW;
      params->uct.data_layout = UCT_PERF_DATA_LAYOUT_SHORT;
      params->mem_type        = UCT_MD_MEM_TYPE_HOST;
      params->msg_size_cnt    = 1;
      params->iov_stride      = 0;
      params->ucp.send_datatype = UCP_PERF_DATATYPE_CONTIG;
      params->ucp.recv_datatype = UCP_PERF_DATATYPE_CONTIG;
      strcpy(params->uct.dev_name, "<none>");
      strcpy(params->uct.tl_name, "<none>");
  
      params->msg_size_list    = malloc(sizeof(*params->msg_size_list) *
                                        params->msg_size_cnt);
      params->msg_size_list[0] = 8;
  }
  
  static ucs_status_t parse_test_params(ucx_perf_params_t *params, char opt, const char *optarg)
  {
      test_type_t *test;
      char *optarg2 = NULL;
  
      switch (opt) {
      case 'd':
          ucs_snprintf_zero(params->uct.dev_name, sizeof(params->uct.dev_name),
                            "%s", optarg);
          return UCS_OK;
      case 'x':
          ucs_snprintf_zero(params->uct.tl_name, sizeof(params->uct.tl_name),
                            "%s", optarg);
          return UCS_OK;
      case 't':
          for (test = tests; test->name; ++test) {
              if (!strcmp(optarg, test->name)) {
                  params->api       = test->api;
                  params->command   = test->command;
                  params->test_type = test->test_type;
                  break;
              }
          }
          if (test->name == NULL) {
              ucs_error("Invalid option argument for -t");
              return UCS_ERR_INVALID_PARAM;
          }
          return UCS_OK;
      case 'D':
          if (!strcmp(optarg, "short")) {
              params->uct.data_layout   = UCT_PERF_DATA_LAYOUT_SHORT;
          } else if (!strcmp(optarg, "bcopy")) {
              params->uct.data_layout   = UCT_PERF_DATA_LAYOUT_BCOPY;
          } else if (!strcmp(optarg, "zcopy")) {
              params->uct.data_layout   = UCT_PERF_DATA_LAYOUT_ZCOPY;
          } else if (UCS_OK == parse_ucp_datatype_params(optarg,
                                                         &params->ucp.send_datatype)) {
              optarg2 = strchr(optarg, ',');
              if (optarg2) {
                  if (UCS_OK != parse_ucp_datatype_params(optarg2 + 1,
                                                         &params->ucp.recv_datatype)) {
                      return -1;
                  }
              }
          } else {
              ucs_error("Invalid option argument for -D");
              return -1;
          }
          return UCS_OK;
      case 'i':
          params->iov_stride = atol(optarg);
          return UCS_OK;
      case 'n':
          params->max_iter = atol(optarg);
          return UCS_OK;
      case 's':
          return parse_message_sizes_params(optarg, params);
      case 'H':
          params->am_hdr_size = atol(optarg);
          return UCS_OK;
      case 'W':
          params->uct.fc_window = atoi(optarg);
          return UCS_OK;
      case 'O':
          params->max_outstanding = atoi(optarg);
          return UCS_OK;
      case 'w':
          params->warmup_iter = atol(optarg);
          return UCS_OK;
      case 'o':
          params->flags |= UCX_PERF_TEST_FLAG_ONE_SIDED;
          return UCS_OK;
      case 'B':
          params->flags |= UCX_PERF_TEST_FLAG_MAP_NONBLOCK;
          return UCS_OK;
      case 'q':
          params->flags &= ~UCX_PERF_TEST_FLAG_VERBOSE;
          return UCS_OK;
      case 'C':
          params->flags |= UCX_PERF_TEST_FLAG_TAG_WILDCARD;
          return UCS_OK;
      case 'U':
          params->flags |= UCX_PERF_TEST_FLAG_TAG_UNEXP_PROBE;
          return UCS_OK;
      case 'M':
          if (!strcmp(optarg, "single")) {
              params->thread_mode = UCS_THREAD_MODE_SINGLE;
              return UCS_OK;
          } else if (!strcmp(optarg, "serialized")) {
              params->thread_mode = UCS_THREAD_MODE_SERIALIZED;
              return UCS_OK;
          } else if (!strcmp(optarg, "multi")) {
              params->thread_mode = UCS_THREAD_MODE_MULTI;
              return UCS_OK;
          } else {
              ucs_error("Invalid option argument for -M");
              return UCS_ERR_INVALID_PARAM;
          }
      case 'T':
          params->thread_count = atoi(optarg);
          params->thread_mode = UCS_THREAD_MODE_MULTI;
          return UCS_OK;
      case 'A':
          if (!strcmp(optarg, "thread")) {
              params->async_mode = UCS_ASYNC_MODE_THREAD;
              return UCS_OK;
          } else if (!strcmp(optarg, "signal")) {
              params->async_mode = UCS_ASYNC_MODE_SIGNAL;
              return UCS_OK;
          } else {
              ucs_error("Invalid option argument for -A");
              return UCS_ERR_INVALID_PARAM;
          }
      case 'r':
          if (!strcmp(optarg, "recv_data")) {
              params->flags |= UCX_PERF_TEST_FLAG_STREAM_RECV_DATA;
              return UCS_OK;
          } else if (!strcmp(optarg, "recv")) {
              params->flags &= ~UCX_PERF_TEST_FLAG_STREAM_RECV_DATA;
              return UCS_OK;
          }
          return UCS_ERR_INVALID_PARAM;
      case 'm':
          if (!strcmp(optarg, "host")) {
              params->mem_type = UCT_MD_MEM_TYPE_HOST;
              return UCS_OK;
          } else if(!strncmp(optarg, "cuda", 4)) {
  #if HAVE_CUDA
              params->mem_type = (!strcmp(optarg, "cuda-managed")) ?
                  UCT_MD_MEM_TYPE_CUDA_MANAGED : UCT_MD_MEM_TYPE_CUDA;
              return UCS_OK;
  #else
              ucs_error("not built with cuda support");
              return UCS_ERR_INVALID_PARAM;
  #endif
          }
          return UCS_ERR_INVALID_PARAM;
      default:
         return UCS_ERR_INVALID_PARAM;
      }
  }
  
  static ucs_status_t read_batch_file(FILE *batch_file, const char *file_name,
                                      int *line_num, ucx_perf_params_t *params,
                                      char** test_name_p)
  {
  #define MAX_SIZE 256
  #define MAX_ARG_SIZE 2048
      ucs_status_t status;
      char buf[MAX_ARG_SIZE];
      int argc;
      char *argv[MAX_SIZE + 1];
      int c;
      char *p;
  
      do {
          if (fgets(buf, sizeof(buf) - 1, batch_file) == NULL) {
              return UCS_ERR_NO_ELEM;
          }
          ++(*line_num);
  
          argc = 0;
          p = strtok(buf, " \t\n\r");
          while (p && (argc < MAX_SIZE)) {
              argv[argc++] = p;
              p = strtok(NULL, " \t\n\r");
          }
          argv[argc] = NULL;
      } while ((argc == 0) || (argv[0][0] == '#'));
  
      optind = 1;
      while ((c = getopt (argc, argv, TEST_PARAMS_ARGS)) != -1) {
          status = parse_test_params(params, c, optarg);
          if (status != UCS_OK) {
              ucs_error("in batch file '%s' line %d: -%c %s: %s",
                        file_name, *line_num, c, optarg, ucs_status_string(status));
              return status;
          }
      }
  
      *test_name_p = strdup(argv[0]);
      return UCS_OK;
  }
  
  static ucs_status_t parse_opts(struct perftest_context *ctx, int mpi_initialized,
                                 int argc, char **argv)
  {
      ucs_status_t status;
      int c;
  
      ucs_trace_func("");
  
      init_test_params(&ctx->params);
      ctx->server_addr            = NULL;
      ctx->num_batch_files        = 0;
      ctx->port                   = 13337;
      ctx->flags                  = 0;
      ctx->mpi                    = mpi_initialized;
  
      optind = 1;
      while ((c = getopt (argc, argv, "p:b:Nfvc:P:h" TEST_PARAMS_ARGS)) != -1) {
          switch (c) {
          case 'p':
              ctx->port = atoi(optarg);
              break;
          case 'b':
              if (ctx->num_batch_files < MAX_BATCH_FILES) {
                  ctx->batch_files[ctx->num_batch_files++] = optarg;
              }
              break;
          case 'N':
              ctx->flags |= TEST_FLAG_NUMERIC_FMT;
              break;
          case 'f':
              ctx->flags |= TEST_FLAG_PRINT_FINAL;
              break;
          case 'v':
              ctx->flags |= TEST_FLAG_PRINT_CSV;
              break;
          case 'c':
              ctx->flags |= TEST_FLAG_SET_AFFINITY;
              ctx->cpu = atoi(optarg);
              break;
          case 'P':
  #if HAVE_MPI
              ctx->mpi = atoi(optarg) && mpi_initialized;
              break;
  #endif
          case 'h':
              usage(ctx, __basename(argv[0]));
              return UCS_ERR_CANCELED;
          default:
              status = parse_test_params(&ctx->params, c, optarg);
              if (status != UCS_OK) {
                  usage(ctx, __basename(argv[0]));
                  return status;
              }
              break;
          }
      }
  
      if (optind < argc) {
          ctx->server_addr   = argv[optind];
      }
  
      return UCS_OK;
  }
  
  static unsigned sock_rte_group_size(void *rte_group)
  {
      return 2;
  }
  
  static unsigned sock_rte_group_index(void *rte_group)
  {
      sock_rte_group_t *group = rte_group;
      return group->is_server ? 0 : 1;
  }
  
  static void sock_rte_barrier(void *rte_group, void (*progress)(void *arg),
                               void *arg)
  {
  #pragma omp master
    {
      sock_rte_group_t *group = rte_group;
      const unsigned magic = 0xdeadbeef;
      unsigned sync;
  
      sync = magic;
      safe_send(group->connfd, &sync, sizeof(unsigned), progress, arg);
  
      sync = 0;
      safe_recv(group->connfd, &sync, sizeof(unsigned), progress, arg);
  
      ucs_assert(sync == magic);
    }
  #pragma omp barrier
  }
  
  static void sock_rte_post_vec(void *rte_group, const struct iovec *iovec,
                                int iovcnt, void **req)
  {
      sock_rte_group_t *group = rte_group;
      size_t size;
      int i;
  
      size = 0;
      for (i = 0; i < iovcnt; ++i) {
          size += iovec[i].iov_len;
      }
  
      safe_send(group->connfd, &size, sizeof(size), NULL, NULL);
      for (i = 0; i < iovcnt; ++i) {
          safe_send(group->connfd, iovec[i].iov_base, iovec[i].iov_len, NULL,
                    NULL);
      }
  }
  
  static void sock_rte_recv(void *rte_group, unsigned src, void *buffer,
                            size_t max, void *req)
  {
      sock_rte_group_t *group = rte_group;
      int group_index;
      size_t size;
  
      group_index = sock_rte_group_index(rte_group);
      if (src == group_index) {
          return;
      }
  
      ucs_assert_always(src == (1 - group_index));
      safe_recv(group->connfd, &size, sizeof(size), NULL, NULL);
      ucs_assert_always(size <= max);
      safe_recv(group->connfd, buffer, size, NULL, NULL);
  }
  
  static void sock_rte_report(void *rte_group, const ucx_perf_result_t *result,
                              void *arg, int is_final)
  {
      struct perftest_context *ctx = arg;
      print_progress(ctx->test_names, ctx->num_batch_files, result, ctx->flags,
                     is_final);
  }
  
  static ucx_perf_rte_t sock_rte = {
      .group_size    = sock_rte_group_size,
      .group_index   = sock_rte_group_index,
      .barrier       = sock_rte_barrier,
      .post_vec      = sock_rte_post_vec,
      .recv          = sock_rte_recv,
      .exchange_vec  = (void*)ucs_empty_function,
      .report        = sock_rte_report,
  };
  
  static ucs_status_t setup_sock_rte(struct perftest_context *ctx)
  {
      struct sockaddr_in inaddr;
      struct hostent *he;
      ucs_status_t status;
      int optval = 1;
      int sockfd, connfd;
      int ret;
  
      sockfd = socket(AF_INET, SOCK_STREAM, 0);
      if (sockfd < 0) {
          ucs_error("socket() failed: %m");
          status = UCS_ERR_IO_ERROR;
          goto err;
      }
  
      if (ctx->server_addr == NULL) {
          optval = 1;
          ret = setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
          if (ret < 0) {
              ucs_error("setsockopt(SO_REUSEADDR) failed: %m");
              status = UCS_ERR_INVALID_PARAM;
              goto err_close_sockfd;
          }
  
          inaddr.sin_family      = AF_INET;
          inaddr.sin_port        = htons(ctx->port);
          inaddr.sin_addr.s_addr = INADDR_ANY;
          memset(inaddr.sin_zero, 0, sizeof(inaddr.sin_zero));
          ret = bind(sockfd, (struct sockaddr*)&inaddr, sizeof(inaddr));
          if (ret < 0) {
              ucs_error("bind() failed: %m");
              status = UCS_ERR_INVALID_ADDR;
              goto err_close_sockfd;
          }
  
          ret = listen(sockfd, 10);
          if (ret < 0) {
              ucs_error("listen() failed: %m");
              status = UCS_ERR_IO_ERROR;
              goto err_close_sockfd;
          }
  
          printf("Waiting for connection...\n");
  
          /* Accept next connection */
          connfd = accept(sockfd, NULL, NULL);
          if (connfd < 0) {
              ucs_error("accept() failed: %m");
              status = UCS_ERR_IO_ERROR;
              goto err_close_sockfd;
          }
  
          close(sockfd);
          safe_recv(connfd, &ctx->params, sizeof(ctx->params), NULL, NULL);
          if (ctx->params.msg_size_cnt) {
              ctx->params.msg_size_list = malloc(sizeof(*ctx->params.msg_size_list) *
                                                 ctx->params.msg_size_cnt);
              if (NULL == ctx->params.msg_size_list) {
                  status = UCS_ERR_NO_MEMORY;
                  goto err_close_connfd;
              }
              safe_recv(connfd, ctx->params.msg_size_list,
                        sizeof(*ctx->params.msg_size_list) * ctx->params.msg_size_cnt,
                        NULL, NULL);
          }
  
          ctx->sock_rte_group.connfd    = connfd;
          ctx->sock_rte_group.is_server = 1;
      } else {
          he = gethostbyname(ctx->server_addr);
          if (he == NULL || he->h_addr_list == NULL) {
              ucs_error("host %s not found: %s", ctx->server_addr,
                        hstrerror(h_errno));
              status = UCS_ERR_INVALID_ADDR;
              goto err_close_sockfd;
          }
  
          inaddr.sin_family = he->h_addrtype;
          inaddr.sin_port   = htons(ctx->port);
          ucs_assert(he->h_length == sizeof(inaddr.sin_addr));
          memcpy(&inaddr.sin_addr, he->h_addr_list[0], he->h_length);
          memset(inaddr.sin_zero, 0, sizeof(inaddr.sin_zero));
  
          ret = connect(sockfd, (struct sockaddr*)&inaddr, sizeof(inaddr));
          if (ret < 0) {
              ucs_error("connect() failed: %m");
              status = UCS_ERR_UNREACHABLE;
              goto err_close_sockfd;
          }
  
          safe_send(sockfd, &ctx->params, sizeof(ctx->params), NULL, NULL);
          if (ctx->params.msg_size_cnt) {
              safe_send(sockfd, ctx->params.msg_size_list,
                        sizeof(*ctx->params.msg_size_list) * ctx->params.msg_size_cnt,
                        NULL, NULL);
          }
  
          ctx->sock_rte_group.connfd    = sockfd;
          ctx->sock_rte_group.is_server = 0;
      }
  
      if (ctx->sock_rte_group.is_server) {
          ctx->flags |= TEST_FLAG_PRINT_TEST;
      } else {
          ctx->flags |= TEST_FLAG_PRINT_RESULTS;
      }
  
      ctx->params.rte_group         = &ctx->sock_rte_group;
      ctx->params.rte               = &sock_rte;
      ctx->params.report_arg        = ctx;
      return UCS_OK;
  
  err_close_connfd:
      close(connfd);
      goto err;
  err_close_sockfd:
      close(sockfd);
  err:
      return status;
  }
  
  static ucs_status_t cleanup_sock_rte(struct perftest_context *ctx)
  {
      close(ctx->sock_rte_group.connfd);
      return UCS_OK;
  }
  
  #if HAVE_MPI
  static unsigned mpi_rte_group_size(void *rte_group)
  {
      int size;
      MPI_Comm_size(MPI_COMM_WORLD, &size);
      return size;
  }
  
  static unsigned mpi_rte_group_index(void *rte_group)
  {
      int rank;
      MPI_Comm_rank(MPI_COMM_WORLD, &rank);
      return rank;
  }
  
  static void mpi_rte_barrier(void *rte_group, void (*progress)(void *arg),
                              void *arg)
  {
      int group_size, my_rank, i;
      MPI_Request *reqs;
      int nreqs = 0;
      int dummy;
      int flag;
  
  #pragma omp master
  
      /*
       * Naive non-blocking barrier implementation over send/recv, to call user
       * progress while waiting for completion.
       * Not using MPI_Ibarrier to be compatible with MPI-1.
       */
  
      MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
      MPI_Comm_size(MPI_COMM_WORLD, &group_size);
  
      /* allocate maximal possible number of requests */
      reqs = (MPI_Request*)alloca(sizeof(*reqs) * group_size);
  
      if (my_rank == 0) {
          /* root gathers "ping" from all other ranks */
          for (i = 1; i < group_size; ++i) {
              MPI_Irecv(&dummy, 0, MPI_INT,
                        i /* source */,
                        1 /* tag */,
                        MPI_COMM_WORLD,
                        &reqs[nreqs++]);
          }
      } else {
          /* every non-root rank sends "ping" and waits for "pong" */
          MPI_Send(&dummy, 0, MPI_INT,
                   0 /* dest */,
                   1 /* tag */,
                   MPI_COMM_WORLD);
          MPI_Irecv(&dummy, 0, MPI_INT,
                    0 /* source */,
                    2 /* tag */,
                    MPI_COMM_WORLD,
                    &reqs[nreqs++]);
      }
  
      /* Waiting for receive requests */
      do {
          MPI_Testall(nreqs, reqs, &flag, MPI_STATUSES_IGNORE);
          progress(arg);
      } while (!flag);
  
      if (my_rank == 0) {
          /* root sends "pong" to all ranks */
          for (i = 1; i < group_size; ++i) {
              MPI_Send(&dummy, 0, MPI_INT,
                       i /* dest */,
                       2 /* tag */,
                       MPI_COMM_WORLD);
         }
      }
  
  #pragma omp barrier
  }
  
  static void mpi_rte_post_vec(void *rte_group, const struct iovec *iovec,
                               int iovcnt, void **req)
  {
      int group_size;
      int my_rank;
      int dest, i;
  
      MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
      MPI_Comm_size(MPI_COMM_WORLD, &group_size);
  
      for (dest = 0; dest < group_size; ++dest) {
          if (dest == my_rank) {
              continue;
          }
  
          for (i = 0; i < iovcnt; ++i) {
              MPI_Send(iovec[i].iov_base, iovec[i].iov_len, MPI_BYTE, dest,
                       i == (iovcnt - 1), /* Send last iov with tag == 1 */
                       MPI_COMM_WORLD);
          }
      }
  
      *req = (void*)(uintptr_t)1;
  }
  
  static void mpi_rte_recv(void *rte_group, unsigned src, void *buffer, size_t max,
                           void *req)
  {
      MPI_Status status;
      size_t offset;
      int my_rank;
      int count;
  
      MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
      if (src == my_rank) {
          return;
      }
  
      offset = 0;
      do {
          ucs_assert_always(offset < max);
          MPI_Recv(buffer + offset, max - offset, MPI_BYTE, src, MPI_ANY_TAG,
                   MPI_COMM_WORLD, &status);
          MPI_Get_count(&status, MPI_BYTE, &count);
          offset += count;
      } while (status.MPI_TAG != 1);
  }
  
  static void mpi_rte_report(void *rte_group, const ucx_perf_result_t *result,
                             void *arg, int is_final)
  {
      struct perftest_context *ctx = arg;
      print_progress(ctx->test_names, ctx->num_batch_files, result, ctx->flags,
                     is_final);
  }
  
  static ucx_perf_rte_t mpi_rte = {
      .group_size    = mpi_rte_group_size,
      .group_index   = mpi_rte_group_index,
      .barrier       = mpi_rte_barrier,
      .post_vec      = mpi_rte_post_vec,
      .recv          = mpi_rte_recv,
      .exchange_vec  = (void*)ucs_empty_function,
      .report        = mpi_rte_report,
  };
  #elif HAVE_RTE
  static unsigned ext_rte_group_size(void *rte_group)
  {
      rte_group_t group = (rte_group_t)rte_group;
      return rte_group_size(group);
  }
  
  static unsigned ext_rte_group_index(void *rte_group)
  {
      rte_group_t group = (rte_group_t)rte_group;
      return rte_group_rank(group);
  }
  
  static void ext_rte_barrier(void *rte_group, void (*progress)(void *arg),
                              void *arg)
  {
  #pragma omp master
    {
      rte_group_t group = (rte_group_t)rte_group;
      int rc;
  
      rc = rte_barrier(group);
      if (RTE_SUCCESS != rc) {
          ucs_error("Failed to rte_barrier");
      }
    }
  #pragma omp barrier
  }
  
  static void ext_rte_post_vec(void *rte_group, const struct iovec* iovec,
                               int iovcnt, void **req)
  {
      rte_group_t group = (rte_group_t)rte_group;
      rte_srs_session_t session;
      rte_iovec_t *r_vec;
      int i, rc;
  
      rc = rte_srs_session_create(group, 0, &session);
      if (RTE_SUCCESS != rc) {
          ucs_error("Failed to rte_srs_session_create");
      }
  
      r_vec = calloc(iovcnt, sizeof(rte_iovec_t));
      if (r_vec == NULL) {
          return;
      }
      for (i = 0; i < iovcnt; ++i) {
          r_vec[i].iov_base = iovec[i].iov_base;
          r_vec[i].type     = rte_datatype_uint8_t;
          r_vec[i].count    = iovec[i].iov_len;
      }
      rc = rte_srs_set_data(session, "KEY_PERF", r_vec, iovcnt);
      if (RTE_SUCCESS != rc) {
          ucs_error("Failed to rte_srs_set_data");
      }
      *req = session;
      free(r_vec);
  }
  
  static void ext_rte_recv(void *rte_group, unsigned src, void *buffer,
                           size_t max, void *req)
  {
      rte_group_t group         = (rte_group_t)rte_group;
      rte_srs_session_t session = (rte_srs_session_t)req;
      void *rte_buffer = NULL;
      rte_iovec_t r_vec;
      uint32_t offset;
      int size;
      int rc;
  
      rc = rte_srs_get_data(session, rte_group_index_to_ec(group, src),
                            "KEY_PERF", &rte_buffer, &size);
      if (RTE_SUCCESS != rc) {
          ucs_error("Failed to rte_srs_get_data");
          return;
      }
  
      r_vec.iov_base = buffer;
      r_vec.type     = rte_datatype_uint8_t;
      r_vec.count    = max;
  
      offset = 0;
      rte_unpack(&r_vec, rte_buffer, &offset);
  
      rc = rte_srs_session_destroy(session);
      if (RTE_SUCCESS != rc) {
          ucs_error("Failed to rte_srs_session_destroy");
      }
      free(rte_buffer);
  }
  
  static void ext_rte_exchange_vec(void *rte_group, void * req)
  {
      rte_srs_session_t session = (rte_srs_session_t)req;
      int rc;
  
      rc = rte_srs_exchange_data(session);
      if (RTE_SUCCESS != rc) {
          ucs_error("Failed to rte_srs_exchange_data");
      }
  }
  
  static void ext_rte_report(void *rte_group, const ucx_perf_result_t *result,
                             void *arg, int is_final)
  {
      struct perftest_context *ctx = arg;
      print_progress(ctx->test_names, ctx->num_batch_files, result, ctx->flags,
                     is_final);
  }
  
  static ucx_perf_rte_t ext_rte = {
      .group_size    = ext_rte_group_size,
      .group_index   = ext_rte_group_index,
      .barrier       = ext_rte_barrier,
      .report        = ext_rte_report,
      .post_vec      = ext_rte_post_vec,
      .recv          = ext_rte_recv,
      .exchange_vec  = ext_rte_exchange_vec,
  };
  #endif
  
  static ucs_status_t setup_mpi_rte(struct perftest_context *ctx)
  {
      ucs_trace_func("");
  
  #if HAVE_MPI
      int size, rank;
  
      MPI_Comm_size(MPI_COMM_WORLD, &size);
      if (size != 2) {
          ucs_error("This test should run with exactly 2 processes (actual: %d)", size);
          return UCS_ERR_INVALID_PARAM;
      }
  
      MPI_Comm_rank(MPI_COMM_WORLD, &rank);
      if (rank == 1) {
          ctx->flags |= TEST_FLAG_PRINT_RESULTS;
      }
  
      ctx->params.rte_group         = NULL;
      ctx->params.rte               = &mpi_rte;
      ctx->params.report_arg        = ctx;
  #elif HAVE_RTE
      rte_group_t group;
  
      rte_init(NULL, NULL, &group);
      if (1 == rte_group_rank(group)) {
          ctx->flags |= TEST_FLAG_PRINT_RESULTS;
      }
  
      ctx->params.rte_group         = group;
      ctx->params.rte               = &ext_rte;
      ctx->params.report_arg        = ctx;
  #endif
      return UCS_OK;
  }
  
  static ucs_status_t cleanup_mpi_rte(struct perftest_context *ctx)
  {
  #if HAVE_RTE
      rte_finalize();
  #endif
      return UCS_OK;
  }
  
  static ucs_status_t check_system(struct perftest_context *ctx)
  {
      cpu_set_t cpuset;
      unsigned i, count, nr_cpus;
      int ret;
  
      ucs_trace_func("");
  
      ret = sysconf(_SC_NPROCESSORS_CONF);
      if (ret < 0) {
          ucs_error("failed to get local cpu count: %m");
          return UCS_ERR_INVALID_PARAM;
      }
      nr_cpus = ret;
  
      memset(&cpuset, 0, sizeof(cpuset));
      if (ctx->flags & TEST_FLAG_SET_AFFINITY) {
          if (ctx->cpu >= nr_cpus) {
              ucs_error("cpu (%u) ot of range (0..%u)", ctx->cpu, nr_cpus - 1);
              return UCS_ERR_INVALID_PARAM;
          }
          CPU_SET(ctx->cpu, &cpuset);
  
          ret = sched_setaffinity(0, sizeof(cpuset), &cpuset);
          if (ret) {
              ucs_warn("sched_setaffinity() failed: %m");
              return UCS_ERR_INVALID_PARAM;
          }
      } else {
          ret = sched_getaffinity(0, sizeof(cpuset), &cpuset);
          if (ret) {
              ucs_warn("sched_getaffinity() failed: %m");
              return UCS_ERR_INVALID_PARAM;
          }
  
          count = 0;
          for (i = 0; i < CPU_SETSIZE; ++i) {
              if (CPU_ISSET(i, &cpuset)) {
                  ++count;
              }
          }
          if (count > 2) {
              ucs_warn("CPU affinity is not set (bound to %u cpus)."
                              " Performance may be impacted.", count);
          }
      }
  
      return UCS_OK;
  }
  
  static void clone_params(ucx_perf_params_t *dest, const ucx_perf_params_t *src)
  {
      size_t msg_size_list_size;
  
      *dest               = *src;
      msg_size_list_size  = dest->msg_size_cnt * sizeof(*dest->msg_size_list);
      dest->msg_size_list = malloc(msg_size_list_size);
      memcpy(dest->msg_size_list, src->msg_size_list, msg_size_list_size);
  }
  
  static ucs_status_t run_test_recurs(struct perftest_context *ctx,
                                      ucx_perf_params_t *parent_params,
                                      unsigned depth)
  {
      ucx_perf_params_t params;
      ucx_perf_result_t result;
      ucs_status_t status;
      FILE *batch_file;
      int line_num;
  
      ucs_trace_func("depth=%u, num_files=%u", depth, ctx->num_batch_files);
  
      if (depth >= ctx->num_batch_files) {
          print_test_name(ctx);
          return ucx_perf_run(parent_params, &result);
      }
  
      batch_file = fopen(ctx->batch_files[depth], "r");
      if (batch_file == NULL) {
          ucs_error("Failed to open batch file '%s': %m", ctx->batch_files[depth]);
          return UCS_ERR_IO_ERROR;
      }
  
      clone_params(&params, parent_params);
      line_num = 0;
      while ((status = read_batch_file(batch_file, ctx->batch_files[depth],
                                       &line_num, &params,
                                       &ctx->test_names[depth])) == UCS_OK) {
          status = run_test_recurs(ctx, &params, depth + 1);
          free(params.msg_size_list);
          free(ctx->test_names[depth]);
          ctx->test_names[depth] = NULL;
  
          clone_params(&params, parent_params);
      }
      free(params.msg_size_list);
  
      fclose(batch_file);
      return UCS_OK;
  }
  
  static ucs_status_t run_test(struct perftest_context *ctx)
  {
      ucs_status_t status;
  
      ucs_trace_func("");
  
      setlocale(LC_ALL, "en_US");
  
      print_header(ctx);
  
      status = run_test_recurs(ctx, &ctx->params, 0);
      if (status != UCS_OK) {
          ucs_error("Failed to run test: %s", ucs_status_string(status));
      }
  
      return status;
  }
  
  int main(int argc, char **argv)
  {
      struct perftest_context ctx;
      ucs_status_t status;
      int mpi_initialized;
      int mpi_rte;
      int ret;
  
  #if HAVE_MPI
      mpi_initialized = !isatty(0) && (MPI_Init(&argc, &argv) == 0);
  #else
      mpi_initialized = 0;
  #endif
  
      /* Parse command line */
      status = parse_opts(&ctx, mpi_initialized, argc, argv);
      if (status != UCS_OK) {
          ret = (status == UCS_ERR_CANCELED) ? 0 : -127;
          goto out;
      }
  
  #ifdef __COVERITY__
      /* coverity[dont_call] */
      mpi_rte = rand(); /* Shut up deadcode error */
  #endif
  
      if (ctx.mpi) {
          mpi_rte = 1;
      } else {
  #if HAVE_RTE
          mpi_rte = 1;
  #else
          mpi_rte = 0;
  #endif
      }
  
      status = check_system(&ctx);
      if (status != UCS_OK) {
          ret = -1;
          goto out;
      }
  
      /* Create RTE */
      status = (mpi_rte) ? setup_mpi_rte(&ctx) : setup_sock_rte(&ctx);
      if (status != UCS_OK) {
          ret = -1;
          goto out;
      }
  
      /* Run the test */
      status = run_test(&ctx);
      if (status != UCS_OK) {
          ret = -1;
          goto out_cleanup_rte;
      }
  
      ret = 0;
  
  out_cleanup_rte:
      (mpi_rte) ? cleanup_mpi_rte(&ctx) : cleanup_sock_rte(&ctx);
  out:
      if (ctx.params.msg_size_list) {
          free(ctx.params.msg_size_list);
      }
      if (mpi_initialized) {
  #if HAVE_MPI
          MPI_Finalize();
  #endif
      }
      return ret;
  }
  