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comms.cpp
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comms.cpp
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/*
Crown Copyright 2012 AWE.
This file is part of CloverLeaf.
CloverLeaf is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
CloverLeaf is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
CloverLeaf. If not, see http://www.gnu.org/licenses/.
*/
// @brief Communication Utilities
// @author Wayne Gaudin
// @details Contains all utilities required to run CloverLeaf in a distributed
// environment, including initialisation, mesh decompostion, reductions and
// halo exchange using explicit buffers.
//
// Note the halo exchange is currently coded as simply as possible and no
// optimisations have been implemented, such as post receives before sends or packing
// buffers with multiple data fields. This is intentional so the effect of these
// optimisations can be measured on large systems, as and when they are added.
//
// Even without these modifications CloverLeaf weak scales well on moderately sized
// systems of the order of 10K cores.
#include "comms.h"
#include "pack_kernel.h"
#include <mpi.h>
#include <cstdlib>
extern std::ostream g_out;
// Set up parallel structure
parallel_::parallel_() {
parallel=true;
MPI_Comm_rank(MPI_COMM_WORLD, &task);
MPI_Comm_size(MPI_COMM_WORLD, &max_task);
if (task == 0)
boss = true;
else
boss = false;
boss_task = 0;
}
void clover_abort() {
MPI_Abort(MPI_COMM_WORLD, EXIT_FAILURE);
}
void clover_barrier() {
MPI_Barrier(MPI_COMM_WORLD);
}
// This decomposes the mesh into a number of chunks.
// The number of chunks may be a multiple of the number of mpi tasks
// Doesn't always return the best split if there are few factors
// All factors need to be stored and the best picked. But its ok for now
void clover_decompose(global_variables& globals, parallel_& parallel, int x_cells, int y_cells, int& left, int& right, int& bottom, int& top) {
int number_of_chunks = globals.number_of_chunks;
// 2D Decomposition of the mesh
double mesh_ratio = (double)x_cells/(double)y_cells;
int chunk_x = number_of_chunks;
int chunk_y = 1;
int split_found = 0; // Used to detect 1D decomposition
double factor_x, factor_y;
for (int c = 1; c <= number_of_chunks; ++c) {
if (number_of_chunks % c == 0) {
factor_x = number_of_chunks/(double)c;
factor_y = c;
// Compare the factor ratio with the mesh ratio
if (factor_x / factor_y <= mesh_ratio) {
chunk_y = c;
chunk_x = number_of_chunks/c;
split_found = 1;
break;
}
}
}
if (split_found == 0 || chunk_y == number_of_chunks) { // Prime number or 1D decomp detected
if (mesh_ratio >= 1.0) {
chunk_x = number_of_chunks;
chunk_y = 1;
}
else {
chunk_x = 1;
chunk_y = number_of_chunks;
}
}
int delta_x = x_cells / chunk_x;
int delta_y = y_cells / chunk_y;
int mod_x = x_cells % chunk_x;
int mod_y = y_cells % chunk_y;
// Set up chunk mesh ranges and chunk connectivity
int add_x_prev = 0;
int add_y_prev = 0;
int cnk = 1;
for (int cy = 1; cy <= chunk_y; ++cy) {
for (int cx = 1; cx <= chunk_x; ++cx) {
int add_x = 0;
int add_y = 0;
if (cx <= mod_x) add_x = 1;
if (cy <= mod_y) add_y = 1;
if (cnk == parallel.task+1) {
left = (cx-1)*delta_x+1+add_x_prev;
right = left+delta_x-1+add_x;
bottom = (cy-1)*delta_y+1+add_y_prev;
top = bottom+delta_y-1+add_y;
globals.chunk.chunk_neighbours[chunk_left]=chunk_x*(cy-1)+cx-1;
globals.chunk.chunk_neighbours[chunk_right]=chunk_x*(cy-1)+cx+1;
globals.chunk.chunk_neighbours[chunk_bottom]=chunk_x*(cy-2)+cx;
globals.chunk.chunk_neighbours[chunk_top]=chunk_x*(cy)+cx;
if (cx == 1) globals.chunk.chunk_neighbours[chunk_left]=external_face;
if (cx == chunk_x) globals.chunk.chunk_neighbours[chunk_right]=external_face;
if (cy == 1) globals.chunk.chunk_neighbours[chunk_bottom]=external_face;
if (cy == chunk_y) globals.chunk.chunk_neighbours[chunk_top]=external_face;
}
if (cx <= mod_x) add_x_prev = add_x_prev+1;
cnk = cnk+1;
}
add_x_prev=0;
if (cy <= mod_y) add_y_prev=add_y_prev+1;
}
if (parallel.boss) {
g_out << std::endl
<< "Mesh ratio of " << mesh_ratio << std::endl
<< "Decomposing the mesh into " << chunk_x << " by " << chunk_y << " chunks" << std::endl
<< "Decomposing the chunk with " << globals.tiles_per_chunk << " tiles" << std::endl
<< std::endl;
}
}
void clover_tile_decompose(global_variables& globals, int chunk_x_cells, int chunk_y_cells) {
int chunk_mesh_ratio = (double)chunk_x_cells/(double)chunk_y_cells;
int tile_x = globals.tiles_per_chunk;
int tile_y = 1;
int split_found = 0; // Used to detect 1D decomposition
for (int t = 1; t <= globals.tiles_per_chunk; ++t) {
if (globals.tiles_per_chunk % t == 0) {
int factor_x = globals.tiles_per_chunk/(double)t;
int factor_y = t;
// Compare the factor ratio with the mesh ratio
if (factor_x/factor_y <= chunk_mesh_ratio) {
tile_y = t;
tile_x = globals.tiles_per_chunk/t;
split_found = 1;
break;
}
}
}
if (split_found == 0 || tile_y == globals.tiles_per_chunk) { // Prime number or 1D decomp detected
if (chunk_mesh_ratio >= 1.0) {
tile_x = globals.tiles_per_chunk;
tile_y = 1;
}
else {
tile_x = 1;
tile_y = globals.tiles_per_chunk;
}
}
int chunk_delta_x = chunk_x_cells/tile_x;
int chunk_delta_y = chunk_y_cells/tile_y;
int chunk_mod_x = chunk_x_cells%tile_x;
int chunk_mod_y = chunk_y_cells%tile_y;
int add_x_prev = 0;
int add_y_prev = 0;
int tile = 0; // Used to index globals.chunk.tiles array
for (int ty = 1; ty <= tile_y; ++ty) {
for (int tx = 1; tx <= tile_x; ++tx) {
int add_x = 0;
int add_y = 0;
if (tx <= chunk_mod_x) add_x = 1;
if (ty <= chunk_mod_y) add_y = 1;
int left = globals.chunk.left+(tx-1)*chunk_delta_x+add_x_prev;
int right = left+chunk_delta_x-1+add_x;
int bottom = globals.chunk.bottom+(ty-1)*chunk_delta_y+add_y_prev;
int top = bottom+chunk_delta_y-1+add_y;
globals.chunk.tiles[tile].tile_neighbours[tile_left]=tile_x*(ty-1)+tx-1;
globals.chunk.tiles[tile].tile_neighbours[tile_right]=tile_x*(ty-1)+tx+1;
globals.chunk.tiles[tile].tile_neighbours[tile_bottom]=tile_x*(ty-2)+tx;
globals.chunk.tiles[tile].tile_neighbours[tile_top]=tile_x*(ty)+tx;
// initial set the external tile mask to 0 for each tile
for (int i = 0; i < 4; ++i) {
globals.chunk.tiles[tile].external_tile_mask[i] = 0;
}
if (tx == 1) {
globals.chunk.tiles[tile].tile_neighbours[tile_left] = external_tile;
globals.chunk.tiles[tile].external_tile_mask[tile_left] = 1;
}
if (tx == tile_x) {
globals.chunk.tiles[tile].tile_neighbours[tile_right] = external_tile;
globals.chunk.tiles[tile].external_tile_mask[tile_right] = 1;
}
if (ty == 1) {
globals.chunk.tiles[tile].tile_neighbours[tile_bottom] = external_tile;
globals.chunk.tiles[tile].external_tile_mask[tile_bottom] = 1;
}
if (ty == tile_y) {
globals.chunk.tiles[tile].tile_neighbours[tile_top] = external_tile;
globals.chunk.tiles[tile].external_tile_mask[tile_top] = 1;
}
if (tx <= chunk_mod_x) add_x_prev = add_x_prev+1;
globals.chunk.tiles[tile].t_xmin = 1;
globals.chunk.tiles[tile].t_xmax = right - left + 1;
globals.chunk.tiles[tile].t_ymin = 1;
globals.chunk.tiles[tile].t_ymax = top - bottom + 1;
globals.chunk.tiles[tile].t_left = left;
globals.chunk.tiles[tile].t_right = right;
globals.chunk.tiles[tile].t_top = top;
globals.chunk.tiles[tile].t_bottom = bottom;
tile = tile+1;
}
add_x_prev = 0;
if (ty <= chunk_mod_y) add_y_prev = add_y_prev+1;
}
}
void clover_allocate_buffers(global_variables& globals, parallel_& parallel) {
// Unallocated buffers for external boundaries caused issues on some systems so they are now
// all allocated
if (parallel.task == globals.chunk.task) {
new(&globals.chunk.left_snd_buffer) Kokkos::View<double*>("left_snd_buffer", 10*2*(globals.chunk.y_max+5));
new(&globals.chunk.left_rcv_buffer) Kokkos::View<double*>("left_rcv_buffer", 10*2*(globals.chunk.y_max+5));
new(&globals.chunk.right_snd_buffer) Kokkos::View<double*>("right_snd_buffer", 10*2*(globals.chunk.y_max+5));
new(&globals.chunk.right_rcv_buffer) Kokkos::View<double*>("right_rcv_buffer", 10*2*(globals.chunk.y_max+5));
new(&globals.chunk.bottom_snd_buffer) Kokkos::View<double*>("bottom_snd_buffer", 10*2*(globals.chunk.x_max+5));
new(&globals.chunk.bottom_rcv_buffer) Kokkos::View<double*>("bottom_rcv_buffer", 10*2*(globals.chunk.x_max+5));
new(&globals.chunk.top_snd_buffer) Kokkos::View<double*>("top_snd_buffer", 10*2*(globals.chunk.x_max+5));
new(&globals.chunk.top_rcv_buffer) Kokkos::View<double*>("top_rcv_buffer", 10*2*(globals.chunk.x_max+5));
// Create host mirrors of device buffers. This makes this, and deep_copy, a no-op if the View is in host memory already.
globals.chunk.hm_left_snd_buffer = Kokkos::create_mirror_view(globals.chunk.left_snd_buffer);
globals.chunk.hm_left_rcv_buffer = Kokkos::create_mirror_view(globals.chunk.left_rcv_buffer);
globals.chunk.hm_right_snd_buffer = Kokkos::create_mirror_view(globals.chunk.right_snd_buffer);
globals.chunk.hm_right_rcv_buffer = Kokkos::create_mirror_view(globals.chunk.right_rcv_buffer);
globals.chunk.hm_bottom_snd_buffer = Kokkos::create_mirror_view(globals.chunk.bottom_snd_buffer);
globals.chunk.hm_bottom_rcv_buffer = Kokkos::create_mirror_view(globals.chunk.bottom_rcv_buffer);
globals.chunk.hm_top_snd_buffer = Kokkos::create_mirror_view(globals.chunk.top_snd_buffer);
globals.chunk.hm_top_rcv_buffer = Kokkos::create_mirror_view(globals.chunk.top_rcv_buffer);
}
}
void clover_sum(double& value) {
double total;
MPI_Reduce(&value, &total, 1, MPI_DOUBLE, MPI_SUM, 0, MPI_COMM_WORLD);
value = total;
}
void clover_min(double& value) {
double minimum = value;
MPI_Allreduce(&value, &minimum, 1, MPI_DOUBLE, MPI_MIN, MPI_COMM_WORLD);
value = minimum;
}
void clover_allgather(double value, double *values) {
values[0] = value; // Just to ensure it will work in serial
MPI_Allgather(&value, 1, MPI_DOUBLE, values, 1, MPI_DOUBLE, MPI_COMM_WORLD);
}
void clover_check_error(int& error) {
int maximum = error;
MPI_Allreduce(&error, &maximum, 1, MPI_INT, MPI_MAX, MPI_COMM_WORLD);
error = maximum;
}
void clover_exchange(global_variables& globals, int fields[NUM_FIELDS], const int depth) {
// Assuming 1 patch per task, this will be changed
int left_right_offset[NUM_FIELDS];
int bottom_top_offset[NUM_FIELDS];
MPI_Request request[4] = {0};
int message_count = 0;
int cnk = 1;
int end_pack_index_left_right = 0;
int end_pack_index_bottom_top = 0;
for (int field = 0; field < NUM_FIELDS; ++field) {
if (fields[field] == 1) {
left_right_offset[field] = end_pack_index_left_right;
bottom_top_offset[field] = end_pack_index_bottom_top;
end_pack_index_left_right += depth * (globals.chunk.y_max+5);
end_pack_index_bottom_top += depth * (globals.chunk.x_max+5);
}
}
if (globals.chunk.chunk_neighbours[chunk_left] != external_face) {
// do left exchanges
// Find left hand tiles
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_left] == 1) {
clover_pack_left(globals, tile, fields, depth, left_right_offset);
}
}
// send and recv messages to the left
clover_send_recv_message_left(globals,
globals.chunk.left_snd_buffer,
globals.chunk.left_rcv_buffer,
end_pack_index_left_right,
1, 2,
request[message_count], request[message_count+1]);
message_count += 2;
}
if (globals.chunk.chunk_neighbours[chunk_right] != external_face) {
// do right exchanges
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_right] == 1) {
clover_pack_right(globals, tile, fields, depth, left_right_offset);
}
}
// send message to the right
clover_send_recv_message_right(globals,
globals.chunk.right_snd_buffer,
globals.chunk.right_rcv_buffer,
end_pack_index_left_right,
2, 1,
request[message_count], request[message_count+1]);
message_count += 2;
}
// make a call to wait / sync
MPI_Waitall(message_count, request, MPI_STATUS_IGNORE);
// Copy back to the device
Kokkos::deep_copy(globals.chunk.left_rcv_buffer, globals.chunk.hm_left_rcv_buffer);
Kokkos::deep_copy(globals.chunk.right_rcv_buffer, globals.chunk.hm_right_rcv_buffer);
// unpack in left direction
if (globals.chunk.chunk_neighbours[chunk_left] != external_face) {
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_left] == 1) {
clover_unpack_left(globals, fields, tile, depth, left_right_offset);
}
}
}
// unpack in right direction
if (globals.chunk.chunk_neighbours[chunk_right] != external_face) {
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_right] == 1) {
clover_unpack_right(globals, fields, tile, depth, left_right_offset);
}
}
}
message_count = 0;
for (int i = 0; i < 4; ++i) request[i] = 0;
if (globals.chunk.chunk_neighbours[chunk_bottom] != external_face) {
// do bottom exchanges
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_bottom] == 1) {
clover_pack_bottom(globals, tile, fields, depth, bottom_top_offset);
}
}
// send message downwards
clover_send_recv_message_bottom(globals,
globals.chunk.bottom_snd_buffer,
globals.chunk.bottom_rcv_buffer,
end_pack_index_bottom_top,
3, 4,
request[message_count], request[message_count+1]);
message_count += 2;
}
if (globals.chunk.chunk_neighbours[chunk_top] != external_face) {
// do top exchanges
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_top] == 1) {
clover_pack_top(globals, tile, fields, depth, bottom_top_offset);
}
}
// send message upwards
clover_send_recv_message_top(globals,
globals.chunk.top_snd_buffer,
globals.chunk.top_rcv_buffer,
end_pack_index_bottom_top,
4, 3,
request[message_count], request[message_count+1]);
message_count += 2;
}
// need to make a call to wait / sync
MPI_Waitall(message_count, request, MPI_STATUS_IGNORE);
// Copy back to the device
Kokkos::deep_copy(globals.chunk.bottom_rcv_buffer, globals.chunk.hm_bottom_rcv_buffer);
Kokkos::deep_copy(globals.chunk.top_rcv_buffer, globals.chunk.hm_top_rcv_buffer);
// unpack in top direction
if (globals.chunk.chunk_neighbours[chunk_top] != external_face) {
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_top] == 1) {
clover_unpack_top(globals, fields, tile, depth, bottom_top_offset);
}
}
}
// unpack in bottom direction
if (globals.chunk.chunk_neighbours[chunk_bottom] != external_face) {
for (int tile = 0; tile < globals.tiles_per_chunk; ++tile) {
if (globals.chunk.tiles[tile].external_tile_mask[tile_bottom] == 1) {
clover_unpack_bottom(globals, fields, tile, depth, bottom_top_offset);
}
}
}
}
void clover_pack_left(global_variables& globals, int tile, int fields[NUM_FIELDS], int depth, int left_right_offset[NUM_FIELDS]) {
int t_offset = (globals.chunk.tiles[tile].t_bottom - globals.chunk.bottom) * depth;
if (fields[field_density0] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.density0,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_density0]+t_offset);
}
if (fields[field_density1] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.density1,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_density1]+t_offset);
}
if (fields[field_energy0] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.energy0,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_energy0]+t_offset);
}
if (fields[field_energy1] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.energy1,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_energy1]+t_offset);
}
if (fields[field_pressure] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.pressure,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_pressure]+t_offset);
}
if (fields[field_viscosity] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.viscosity,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_viscosity]+t_offset);
}
if (fields[field_soundspeed] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.soundspeed,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_soundspeed]+t_offset);
}
if (fields[field_xvel0] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.xvel0,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_xvel0]+t_offset);
}
if (fields[field_xvel1] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.xvel1,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_xvel1]+t_offset);
}
if (fields[field_yvel0] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.yvel0,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_yvel0]+t_offset);
}
if (fields[field_yvel1] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.yvel1,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_yvel1]+t_offset);
}
if (fields[field_vol_flux_x] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.vol_flux_x,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, x_face_data,
left_right_offset[field_vol_flux_x]+t_offset);
}
if (fields[field_vol_flux_y] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.vol_flux_y,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, y_face_data,
left_right_offset[field_vol_flux_y]+t_offset);
}
if (fields[field_mass_flux_x] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.mass_flux_x,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, x_face_data,
left_right_offset[field_mass_flux_x]+t_offset);
}
if (fields[field_mass_flux_y] == 1) {
clover_pack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.mass_flux_y,
globals.chunk.left_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, y_face_data,
left_right_offset[field_mass_flux_y]+t_offset);
}
}
void clover_send_recv_message_left(
global_variables& globals,
Kokkos::View<double*>& left_snd_buffer,
Kokkos::View<double*>& left_rcv_buffer,
int total_size, int tag_send, int tag_recv,
MPI_Request& req_send, MPI_Request& req_recv) {
// First copy send buffer from device to host
Kokkos::deep_copy(globals.chunk.hm_left_snd_buffer, left_snd_buffer);
int left_task = globals.chunk.chunk_neighbours[chunk_left] - 1;
MPI_Isend(globals.chunk.hm_left_snd_buffer.data(), total_size, MPI_DOUBLE, left_task, tag_send, MPI_COMM_WORLD, &req_send);
MPI_Irecv(globals.chunk.hm_left_rcv_buffer.data(), total_size, MPI_DOUBLE, left_task, tag_recv, MPI_COMM_WORLD, &req_recv);
}
void clover_unpack_left(global_variables& globals, int fields[NUM_FIELDS], int tile, int depth, int left_right_offset[NUM_FIELDS]) {
int t_offset = (globals.chunk.tiles[tile].t_bottom - globals.chunk.bottom) * depth;
if (fields[field_density0] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.density0,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_density0]+t_offset);
}
if (fields[field_density1] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.density1,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_density1]+t_offset);
}
if (fields[field_energy0] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.energy0,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_energy0]+t_offset);
}
if (fields[field_energy1] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.energy1,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_energy1]+t_offset);
}
if (fields[field_pressure] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.pressure,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_pressure]+t_offset);
}
if (fields[field_viscosity] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.viscosity,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_viscosity]+t_offset);
}
if (fields[field_soundspeed] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.soundspeed,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_soundspeed]+t_offset);
}
if (fields[field_xvel0] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.xvel0,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_xvel0]+t_offset);
}
if (fields[field_xvel1] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.xvel1,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_xvel1]+t_offset);
}
if (fields[field_yvel0] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.yvel0,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_yvel0]+t_offset);
}
if (fields[field_yvel1] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.yvel1,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_yvel1]+t_offset);
}
if (fields[field_vol_flux_x] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.vol_flux_x,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, x_face_data,
left_right_offset[field_vol_flux_x]+t_offset);
}
if (fields[field_vol_flux_y] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.vol_flux_y,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, y_face_data,
left_right_offset[field_vol_flux_y]+t_offset);
}
if (fields[field_mass_flux_x] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.mass_flux_x,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, x_face_data,
left_right_offset[field_mass_flux_x]+t_offset);
}
if (fields[field_mass_flux_y] == 1) {
clover_unpack_message_left(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.mass_flux_y,
globals.chunk.left_rcv_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, y_face_data,
left_right_offset[field_mass_flux_y]+t_offset);
}
}
void clover_pack_right(global_variables& globals, int tile, int fields[NUM_FIELDS], int depth, int left_right_offset[NUM_FIELDS]) {
int t_offset = (globals.chunk.tiles[tile].t_bottom - globals.chunk.bottom) * depth;
if (fields[field_density0] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.density0,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_density0]+t_offset);
}
if (fields[field_density1] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.density1,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_density1]+t_offset);
}
if (fields[field_energy0] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.energy0,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_energy0]+t_offset);
}
if (fields[field_energy1] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.energy1,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_energy1]+t_offset);
}
if (fields[field_pressure] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.pressure,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_pressure]+t_offset);
}
if (fields[field_viscosity] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.viscosity,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_viscosity]+t_offset);
}
if (fields[field_soundspeed] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.soundspeed,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, cell_data,
left_right_offset[field_soundspeed]+t_offset);
}
if (fields[field_xvel0] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.xvel0,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_xvel0]+t_offset);
}
if (fields[field_xvel1] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.xvel1,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_xvel1]+t_offset);
}
if (fields[field_yvel0] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.yvel0,
globals.chunk.right_snd_buffer,
cell_data, vertex_data, x_face_data, y_face_data,
depth, vertex_data,
left_right_offset[field_yvel0]+t_offset);
}
if (fields[field_yvel1] == 1) {
clover_pack_message_right(
globals.chunk.tiles[tile].t_xmin,
globals.chunk.tiles[tile].t_xmax,
globals.chunk.tiles[tile].t_ymin,
globals.chunk.tiles[tile].t_ymax,
globals.chunk.tiles[tile].field.yvel1,