test_redist_repeat.c

 
/*
 * Keywords:
 * Maintainer: Jörg Behrens <behrens@dkrz.de>
 *             Moritz Hanke <hanke@dkrz.de>
 *             Thomas Jahns <jahns@dkrz.de>
 * URL: https://dkrz-sw.gitlab-pages.dkrz.de/yaxt/
 *
 * Redistribution and use in source and binary forms, with or without
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 * met:
 *
 * Redistributions of source code must retain the above copyright notice,
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 *
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 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
 
#include <stdbool.h>
#include <string.h>
 
#include <mpi.h>
 
#include <yaxt.h>
 
#include "tests.h"
#include "ctest_common.h"
#include "test_redist_common.h"
 
 
int main(int argc, char **argv) {
 
  test_init_mpi(&argc, &argv, MPI_COMM_WORLD);
 
  xt_initialize(MPI_COMM_WORLD);
  Xt_config config = redist_exchanger_option(&argc, &argv);
 
  MPI_Comm comm = MPI_COMM_WORLD;
 
  { // general test with one redist
    // set up data
    enum { src_slice_len = 5, dst_slice_len = 3 };
    Xt_xmap xmap = build_odd_selection_xmap(src_slice_len, comm);
    Xt_redist redist = xt_redist_p2p_new(xmap, MPI_DOUBLE);
    xt_xmap_delete(xmap);
 
    // generate redist_repeatection
 
    static const double src_data[] = {1,2,3,4,5};
    double dst_data[dst_slice_len];
    MPI_Aint src_extent = (MPI_Aint)(sizeof(src_data)),
      dst_extent = (MPI_Aint)(sizeof(dst_data));
    static const int displacements[1] = {0};
 
    Xt_redist redist_repeat = xt_redist_repeat_custom_new(
      redist, src_extent, dst_extent, 1, displacements, config);
 
    // test communicator of redist
 
    if (!communicators_are_congruent(xt_redist_get_MPI_Comm(redist_repeat),
                                     comm))
      PUT_ERR("error in xt_redist_get_MPI_Comm\n");
 
    xt_redist_delete(redist);
 
    // test exchange
    static const double ref_dst_data[] = {1,3,5};
 
    check_redist(redist_repeat, src_data, dst_slice_len, dst_data,
                 fill_array_double, NULL, ref_dst_data, MPI_DOUBLE, MPI_DOUBLE);
 
    // clean up
    xt_redist_delete(redist_repeat);
  }
 
  {
    // test with one redist used three times (two exchanges)
    // set up data
    enum { src_slice_len = 5, dst_slice_len = (src_slice_len+1)/2 };
    Xt_xmap xmap = build_odd_selection_xmap(src_slice_len, comm);
    Xt_redist redist = xt_redist_p2p_new(xmap, MPI_DOUBLE);
    xt_xmap_delete(xmap);
 
    // generate redist_repeatection
 
    enum { num_repetitions = 3 };
    static const double src_data[num_repetitions][src_slice_len]
      = {{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15}};
    double dst_data[num_repetitions][dst_slice_len];
    MPI_Aint src_extent =
      (MPI_Aint)((size_t)(src_data[1] - src_data[0]) * sizeof (double));
    MPI_Aint dst_extent =
      (MPI_Aint)((size_t)(dst_data[1] - dst_data[0]) * sizeof (double));
    static const int displacements[num_repetitions] = {0, 1, 2};
 
    Xt_redist redist_repeat = xt_redist_repeat_custom_new(
      redist, src_extent, dst_extent,
      num_repetitions, displacements, config);
 
    // test communicator of redist
 
    if (!communicators_are_congruent(xt_redist_get_MPI_Comm(redist_repeat),
                                     comm))
      PUT_ERR("error in xt_redist_get_MPI_Comm\n");
 
    xt_redist_delete(redist);
 
    // test exchange
    static const double ref_dst_data[num_repetitions][dst_slice_len]
      = {{1,3,5},{6,8,10},{11,13,15}};
    check_redist(redist_repeat, src_data, num_repetitions * dst_slice_len,
                 dst_data, fill_array_double, NULL, ref_dst_data,
                 MPI_DOUBLE, MPI_DOUBLE);
 
    // clean up
 
    xt_redist_delete(redist_repeat);
  }
 
  {
    // test with one redist used three times with asymmetric displacements
    // set up data
    enum { src_slice_len = 5, dst_slice_len = (src_slice_len+1)/2 };
    Xt_xmap xmap = build_odd_selection_xmap(src_slice_len, comm);
    Xt_redist redist = xt_redist_p2p_new(xmap, MPI_DOUBLE);
    xt_xmap_delete(xmap);
 
    // generate redist_repetition
 
    enum { num_repetitions = 3 };
    static const double src_data[num_repetitions][src_slice_len]
      = {{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15}};
    double dst_data[num_repetitions][dst_slice_len];
    MPI_Aint src_extent =
      (MPI_Aint)((size_t)(src_data[1] - src_data[0]) * sizeof (double));
    MPI_Aint dst_extent =
      (MPI_Aint)((size_t)(dst_data[1] - dst_data[0]) * sizeof (double));
    static const int src_displacements[num_repetitions] = {0, 1, 2},
      dst_displacements[num_repetitions] = {2, 1, 0};
 
    Xt_redist redist_repeat
      = xt_redist_repeat_asym_custom_new(redist, src_extent, dst_extent,
                                         num_repetitions, src_displacements,
                                         dst_displacements, config);
 
    // test communicator of redist
 
    if (!communicators_are_congruent(xt_redist_get_MPI_Comm(redist_repeat),
                                     comm))
      PUT_ERR("error in xt_redist_get_MPI_Comm\n");
 
    xt_redist_delete(redist);
 
    // test exchange
    static const double ref_dst_data[num_repetitions][dst_slice_len]
      = {{11,13,15},{6,8,10},{1,3,5}};
    check_redist(redist_repeat, src_data, num_repetitions * dst_slice_len,
                 dst_data, fill_array_double, NULL, ref_dst_data,
                 MPI_DOUBLE, MPI_DOUBLE);
 
    // clean up
 
    xt_redist_delete(redist_repeat);
  }
 
  { // test with one redist used three times with gaps between the levels
    enum { src_slice_len = 5, dst_slice_len = (src_slice_len+1)/2,
           rep_dim_size = 5 };
    Xt_xmap xmap = build_odd_selection_xmap(src_slice_len, comm);
    Xt_redist redist = xt_redist_p2p_new(xmap, MPI_DOUBLE);
    xt_xmap_delete(xmap);
 
    // generate redist_repeatection
    MPI_Aint src_extent = (MPI_Aint)(src_slice_len * sizeof (double));
    MPI_Aint dst_extent = (MPI_Aint)(dst_slice_len * sizeof (double));
    static const int displacements[3] = {0, 2, 4};
    Xt_redist redist_repeat = xt_redist_repeat_custom_new(
      redist, src_extent, dst_extent, 3, displacements, config);
 
    // test communicator of redist
 
    if (!communicators_are_congruent(xt_redist_get_MPI_Comm(redist_repeat),
                                     comm))
      PUT_ERR("error in xt_redist_get_MPI_Comm\n");
 
    xt_redist_delete(redist);
 
    // test exchange
    static const double src_data[rep_dim_size][src_slice_len]
      = {{1,2,3,4,5},{-1},{6,7,8,9,10},{-1},{11,12,13,14,15}};
    double dst_data[rep_dim_size][dst_slice_len];
    static const double ref_dst_data[rep_dim_size][dst_slice_len]
      = {{1,3,5},{-1,-1,-1},{6,8,10},{-1,-1,-1},{11,13,15}};
    check_redist(redist_repeat, src_data, rep_dim_size * dst_slice_len,
                 dst_data, fill_array_double, NULL, ref_dst_data,
                 MPI_DOUBLE, MPI_DOUBLE);
 
    // clean up
 
    xt_redist_delete(redist_repeat);
  }
 
 
  { // test of redist_repeat generated with overlapping repetition of input redist
    enum { npt = 9 };
    Xt_xmap xmap = build_odd_selection_xmap(6, comm);
    static const int src_pos[npt] = {1,2,3,4,5,6,7,8,9};
    static const int dst_pos[npt] = {0,2,4,6,8,10,12,14,16};
    Xt_redist redist = xt_redist_p2p_off_custom_new(
      xmap, src_pos, dst_pos, MPI_DOUBLE, config);
 
    xt_xmap_delete(xmap);
 
    // init data
    double src_data[npt], dst_data[npt];
    static const double ref_dst_data[npt]
        = {102.0, 103.0, 104.0, 105.0, 106.0, 107.0, -1.0, -1.0, -1.0};
    for(int i = 0; i<npt; i++) src_data[i] = 100+i+1;
 
    for (int j = 0; j < 2; ++j) {
 
      for(int i = 0; i<npt; i++) dst_data[i] = -1;
 
      // generate reference destination data: {102, 103, ..., 107, -1, -1, ... }
      if (j == 0) {
        xt_redist_s_exchange1(redist, src_data, dst_data);
        xt_redist_s_exchange1(redist, src_data+1, dst_data+1);
      } else {
        Xt_request request[2];
        xt_redist_a_exchange1(redist, src_data, dst_data, request+0);
        xt_redist_a_exchange1(redist, src_data+1, dst_data+1, request+1);
        xt_request_wait(&request[0]);
        xt_request_wait(&request[1]);
      }
 
      // explicit check of ref data:
      bool mismatch = false;
      for(int i=0; i<npt; i++)
        mismatch |= (dst_data[i] != ref_dst_data[i]);
      if (mismatch)
        PUT_ERR("error in xt_redist_repeat\n");
    }
 
    // generate redist_repeat
    MPI_Aint src_extent = (MPI_Aint)(1 * sizeof (double));
    MPI_Aint dst_extent = (MPI_Aint)(1 * sizeof (double));
    static const int displacements[2] = {0,1};
    Xt_redist redist_repeat = xt_redist_repeat_custom_new(
      redist, src_extent, dst_extent, 2, displacements, config);
 
    // test communicator of redist
    if (!communicators_are_congruent(xt_redist_get_MPI_Comm(redist_repeat),
                                     comm))
      PUT_ERR("error in xt_redist_get_MPI_Comm\n");
 
    // test exchange
    check_redist(redist_repeat, src_data, npt, dst_data,
                 fill_array_double, NULL, ref_dst_data, MPI_DOUBLE, MPI_DOUBLE);
 
    // clean up
    xt_redist_delete(redist);
    xt_redist_delete(redist_repeat);
 
  }
 
  xt_config_delete(config);
  xt_finalize();
  MPI_Finalize();
 
  return TEST_EXIT_CODE;
}
 
/*
 * Local Variables:
 * c-basic-offset: 2
 * coding: utf-8
 * indent-tabs-mode: nil
 * show-trailing-whitespace: t
 * require-trailing-newline: t
 * End:
 */