void static_test(double aexp){
// Assign density to grid [or use analytical formula]
if(sim._analytic_matter_density){
set_analytical_density_field(sim._Rho, sim._ngrid);
} else {
assign_particles_to_grid(sim._Rho, sim._ngrid);
}
// Solve for gravitational force
compute_gravitational_acceleration(aexp);
if(sim._modified_gravity){
// Initial guess for modified gravity solver
make_initial_guess(sim._ScalarField, aexp);
// Solve for scalar field
solve_phi_with_multigrid();
// Compute fifth-force
calculate_fifth_force();
}
// Dump grids
if(sim._modified_gravity)
output_grid(sim._ScalarField, sim._ngrid, "scalarfield_grid.txt");
output_grid(sim._Rho, sim._ngrid, "rho_grid.txt");
output_grid(sim._Phi, sim._ngrid, "rho_grid.txt");
}
void jacobi(
std::size_t n
, std::size_t iterations, std::size_t block_size
, std::string output_filename)
{
typedef std::vector<double> vector;
std::shared_ptr<vector> grid_new(new vector(n * n, 1));
std::shared_ptr<vector> grid_old(new vector(n * n, 1));
hpx::util::high_resolution_timer t;
for(std::size_t i = 0; i < iterations; ++i)
{
// MSVC is unhappy if the OMP loop variable is unsigned
#pragma omp parallel for schedule(JACOBI_SMP_OMP_SCHEDULE)
for(boost::int64_t y = 1; y < boost::int64_t(n-1); ++y)
{
double * dst = &(*grid_new)[y * n];
const double * src = &(*grid_new)[y * n];
jacobi_kernel(
dst
, src
, n
);
}
std::swap(grid_new, grid_old);
}
report_timing(n, iterations, t.elapsed());
output_grid(output_filename, *grid_old, n);
}
/* Run the game */
void run (struct state *st, struct ui *ui) {
int k = 0;
int finished = 0;
while( !finished ) {
if (time_to_redraw) {
k++;
if (k>=1600) k=0;
int slowdown = game_slowdown(st->speed);
if (k % slowdown == 0 && st->speed != sp_pause) {
kings_move(st);
simulate(st);
if (st->show_timeline) {
if (st->time%10 == 0)
update_timeline(st);
}
}
output_grid(st, ui, k);
if (st->show_timeline) {
if (st->time%10 == 0)
output_timeline(st, ui);
}
time_to_redraw = 0;
win_or_lose_message(st, k);
}
finished = update_from_input(st, ui);
// refresh();
pause(); // sleep until woken up by SIGALRM
}
}
/* run client */
void run_client (struct state *st, struct ui *ui, char *s_server_addr, char *s_server_port, char *s_client_port) {
int sfd; /* file descriptor of the socket */
int ret_code; /* code returned by a function */
struct addrinfo srv_addr;
if ((ret_code = client_init_session
(&sfd, s_client_port, &srv_addr, s_server_addr, s_server_port)) != 0) {
perror("Failed to initialize networking");
return;
}
/* non-blocking mode */
fcntl(sfd, F_SETFL, O_NONBLOCK);
int k = 0;
int finished = 0;
int initialized = 0;
st->time = 0;
while( !finished ) {
if (time_to_redraw) {
k++;
if (k>=1600) k=0;
time_to_redraw = 0;
if (k%50 == 0)
send_msg_c (sfd, &srv_addr, MSG_C_IS_ALIVE, 0, 0, 0);
int msg = client_receive_msg_s (sfd, st);
if (msg == MSG_S_STATE && initialized != 1) {
initialized = 1;
ui_init(st, ui);
}
if (initialized) {
output_grid(st, ui, k);
/*
if (st->show_timeline) {
if (st->time%10 == 0)
output_timeline(st, ui);
}
*/
win_or_lose_message(st, k);
}
}
finished = update_from_input_client(st, ui, sfd, &srv_addr);
pause();
}
close(sfd);
}
int main()
{
double sta = 1.0/64.;//, stb = 1./512.;
int sa = 65, i;//, sb = 513/*,j*/;
FILE *outs;
init(&U,sa,sa);
init(&Unew,sa,sa);
//init(&Ub,sb,sb);
init_cond(&U, sa, sa, sta,sta);
memcpy(&Unew,&U,sizeof(Unew));
for(i = 0; i<7000; i++)
{
iteration(&U,&Unew, sa,sa, sta,sta);
memcpy(&U,&Unew,sizeof(Unew));
}
printf("step a done\n");
//outs = fopen("../output/out1.dat", "w");
//output_line(U, sa,sa, sta,sta, outs);
//fclose(outs);
//interpol(&Ub, sb, sb, stb, stb, &U, sa-1, sa-1, sta, sta);
//init_cond(&Ub, sb, sb, stb, stb);
//freeArr(&Unew, sa);
//init(&Unew,sb,sb);
//init_cond(&Unew, sb, sb, stb, stb);
//memcpy(&Unew,&Ub,sizeof(Ub));
//for(i = 0; i<500 /*&& (err>0.0005 || err == 0.0)*/ ; i++)
//{
//printf("%d/100\n",i);
//iteration(&Ub,&Unew, sb,sb, stb,stb);
//memcpy(&Ub,&Unew,sizeof(Unew));
//}
outs = fopen("../output/out3.dat", "w");
output_grid(U, sa,sa, sta,sta, outs);
fclose(outs);
printf("pot. output \n");
outs = fopen("../output/press.dat", "w");
output_field_color(U, sa,sa, sta,sta, outs);
fclose(outs);
printf("pressure output\n");
outs = fopen("../output/field.dat", "w");
output_field(U, sa,sa, sta,sta, outs);
fclose(outs);
printf("field output\n");
system("./lines_of_level");
system("./Plot_field");
system("./Plot_col");
system("./Plot");
return 0;
}
void jacobi(
std::size_t n
, std::size_t iterations, std::size_t block_size
, std::string output_filename)
{
typedef std::vector<double> vector;
boost::shared_ptr<vector> grid_new(new vector(n * n, 1));
boost::shared_ptr<vector> grid_old(new vector(n * n, 1));
typedef std::vector<hpx::shared_future<void> > deps_vector;
std::size_t n_block = static_cast<std::size_t>(std::ceil(double(n)/block_size));
boost::shared_ptr<deps_vector> deps_new(
new deps_vector(n_block, hpx::make_ready_future()));
boost::shared_ptr<deps_vector> deps_old(
new deps_vector(n_block, hpx::make_ready_future()));
hpx::util::high_resolution_timer t;
for(std::size_t i = 0; i < iterations; ++i)
{
for(std::size_t y = 1, j = 0; y < n -1; y += block_size, ++j)
{
std::size_t y_end = (std::min)(y + block_size, n - 1);
std::vector<hpx::shared_future<void> > trigger;
trigger.reserve(3);
trigger.push_back((*deps_old)[j]);
if(j > 0) trigger.push_back((*deps_old)[j-1]);
if(j + 1 < n_block) trigger.push_back((*deps_old)[j+1]);
/*
* FIXME: dataflow seems to have some raceconditions
* left
(*deps_new)[j]
= hpx::dataflow(
hpx::util::bind(
jacobi_kernel_wrap
, range(y, y_end)
, n
, boost::ref(*grid_new)
, boost::cref(*grid_old)
)
, trigger
);
*/
(*deps_new)[j] = hpx::when_all(std::move(trigger)).then(
hpx::launch::async,
hpx::util::bind(
jacobi_kernel_wrap
, range(y, y_end)
, n
, boost::ref(*grid_new)
, boost::cref(*grid_old)
)
);
}
std::swap(grid_new, grid_old);
std::swap(deps_new, deps_old);
}
hpx::wait_all(*deps_new);
hpx::wait_all(*deps_old);
report_timing(n, iterations, t.elapsed());
output_grid(output_filename, *grid_old, n);
}
