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model.cpp
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/*
* SpectRE - A Spectral Code for Reheating
* Copyright (C) 2009-2010 Hal Finkel, Nathaniel Roth and Richard Easther
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define _XOPEN_SOURCE 600
#include "pow/pow.hpp"
#include "model.hpp"
#include "integrator.hpp"
#include "verlet.hpp"
#include "rk4.hpp"
#include "initializer.hpp"
#include "le_style_initializer.hpp"
#include "defrost_style_initializer.hpp"
#include "grid_funcs.hpp"
#include "spectra_outputter.hpp"
#include "twoptcorr_outputter.hpp"
#include "stats_outputter.hpp"
#include "energy_outputter.hpp"
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <algorithm>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifdef _OPENMP
#include <omp.h>
#endif
using namespace std;
// Forward declaration of integrator classes...
template <typename R> class integrator;
template <typename R> class verlet;
template <typename R> class rk4;
template <typename R>
const char *precision_name()
{
return "unknown";
}
template <>
const char *precision_name<double>()
{
return "double";
}
template <>
const char *precision_name<long double>()
{
return "extended";
}
template <typename R>
void model<R>::set_output_directory(const char *uodn)
{
time_t curt = time(NULL);
tm *curtm = localtime(&curt);
char outdirname[2048];
strftime(outdirname, 2048, "output-%Y%m%d%H%M%S", curtm);
if (!uodn || uodn[0] == '\0') {
uodn = outdirname;
}
mkdir(uodn, 0744);
chdir(uodn);
}
/**
* @page running Running
*
* @section Command-Line Parameters
* SpectRE Usage:
* @code
* ./pspectre [-h]
* ./pspectre [-r] [-l [-B <real>]] [-V] [-H <name>[,<name>]*] [-O] [-N <int>] [-P <int>] [-L <real>] [-R <int>] [-o <dir name>] [-t <real>[:<real>]] [-T <real>] [-A <real>] [-p <name>=<value>[,<name>=<value>]*] [-e] [-s <name>[,<name>]*] [-S <name>[=<value>][,<name>[=<value>]]*] [-I <name>=<value>[,<name>=<value>]*] [--long] [@<file name>]
* @endcode
*
* @li -h: Display usage information and exit
* @li -r: Use the RK4 integrator (default is the Verlet integrator)
* @li -l: Use LatticeEasy-style initial conditions (default is DEFROST-style initial conditions)
* @li -B: The base length scale (default is 1.0 to match LatticeEasy)
* @li -V: Allow the field variance to change with L
* @li -e: Use power-law expansion
* @li -H \<name\>[,\<name\>]*: Use homogeneous (zero variance) initial conditions. Field names are:
* @code
* phi
* chi
* @endcode
* @li -O: Use out-of-place transforms
* @li -N \<int\>: The number of grid points per side of the box
* @li -P \<int\>: The padding factor used for position-space integration
* @li -L \<real\>: The physical size of the box
* @li -R \<int\>: The random seed
* @li -o \<dir name\>: Set the output directory name
* @li -t \<real\>[:\<real\>]: Set dt with an optional start time in program units
* @li -T \<real\>: The final time in program units
* @li -A \<real\>: The final scale factor
* @li -p \<name\>=\<value\>[,\<name\>=\<value\>]*: Set a parameter value. Valid parameters are:
* @code
* gamma_phi
* gamma_chi
* lambda_phi
* lambda_chi
* g
* m_phi
* m_chi
* phi0
* chi0
* phidot0
* chidot0
* ics_scale
* monodromy_exp_phi
* monodromy_exp_chi
* monodromy_scale_phi
* monodromy_scale_chi
* H0
* phi0_slice
* chi0_slice
* phidot0_slice
* chidot0_slice
* ics_eff_size
* (a0 can be specified when H0 is specified by appending :\<a0\> to the H0 value;
* Hdot0 can be similarly appended for use with power-law background expansion)
* (file paths provided for *_slice parameters cannot contain comma characters)
* (ics_eff_size is an integer <= N)
* @endcode
* @li -s \<name\>[,\<name\>]*: Enable slice output of a variable. Valid variables are:
* @code
* phi
* chi
* phidot
* chidot
* V
* V_phys
* T_phi
* T_chi
* T_phi_phys
* T_chi_phys
* G_phi
* G_chi
* G_phi_phys
* G_chi_phys
* G_phi_x
* G_chi_x
* G_phi_phys_x
* G_chi_phys_x
* G_phi_y
* G_chi_y
* G_phi_phys_y
* G_chi_phys_y
* G_phi_z
* G_chi_z
* G_phi_phys_z
* G_chi_phys_z
* grad_phi_phys_x
* grad_chi_phys_x
* grad_phi_phys_y
* grad_chi_phys_y
* grad_phi_phys_z
* grad_chi_phys_z
* rho
* rho_phys
* p
* p_phys
* gpot
* @endcode
* @li -S \<name\>[=\<value\>][,\<name\>[=\<value\>]]*: Set a slice output option value. Valid options are:
* @code
* dim
* length
* skip
* avg
* fullprec
* (avg and fullprec do not take a value)
* @endcode
* @li -I \<name\>=\<value\>[:\<real\>][,\<name\>=\<value\>[:\<real\>]]*: Set an output interval with an optional start time. Valid intervals are:
* @code
* scale
* energy
* spectra
* twoptcorr
* screen
* slice
* stats
* all
* (intervals are specified as a number of iterations)
* @endcode
* @li --long: Run using long-double (extended) precision (this must be the *last* command-line option argument)
* @li \@\<file name\>: The name of a parameters file. The parameters file has the same syntax as the command
* line except that it may be divided among multiple lines and may contain comment lines which begin with
* a \# character.
*
* @par
* The default parameters model a situation generally similar to the default model provided with DEFROST version 1.1.
*
* @section rexamples Examples
*
* The following runs the model with the default parameters except that it sets a 128^3 grid with dt = 0.0005. Also,
* -r selects the RK4 integrator (Verlet is default). -l selects LE-style initial conditions. -I all=1
* sets all output intervals to 1 time step (the default is 25).
*
* @code
* ./pspectre -N 128 -t 0.0005 -r -l -I all=1
* @endcode
*
* The following runs the model with the default parameters and has binary slice outputs for the energy density, pressure
* and gravitational potential. The slices to have a length of 32 points per side and were constructed by averaging (not skipping)
* over every eight-point cube (since the dimension is 3). -P 2 causes the integration over the potential energy to use a (2N)^3 grid.
*
* @code
* ./pspectre -P 2 -s rho,p,gpot -S dim=3,length=32,skip=1,avg
* @endcode
*/
template <typename R>
model<R>::model(int argc, char *argv[])
: fs(64), use_verlet(true), le_init(false), homo_ic_phi(false), homo_ic_chi(false), seed(1), tf(200.0),
scale_interval(25), energy_interval(25), spectra_interval(25),
screen_interval(25), slice_interval(25), stats_interval(25), twoptcorr_interval(25),
scale_intervals(scale_interval, 0.0, scale_interval, "t", "scale-factor output interval"),
energy_intervals(energy_interval, 0.0, energy_interval, "t", "energy output interval"),
spectra_intervals(spectra_interval, 0.0, spectra_interval, "t", "spectra output interval"),
screen_intervals(screen_interval, 0.0, screen_interval, "t", "screen output interval"),
slice_intervals(slice_interval, 0.0, slice_interval, "t", "slice output interval"),
stats_intervals(stats_interval, 0.0, stats_interval, "t", "stats output interval"),
twoptcorr_intervals(twoptcorr_interval, 0.0, twoptcorr_interval, "t", "two-pt. corr. output interval"),
phi("phi"), phidot("phidot"), chi("chi"), chidot("chidot"), gc(0), som(0), ics_scale(1), len0(1.0),
vvwl(false), af(0.0), external_H0(false), ics_eff_size(0), phidot0pr(0.0), chidot0pr(0.0)
#ifdef HAVE_PRIVATE
, priv(phi, chi)
#endif
{
char *subopts, *value;
int opt;
extern char *optarg;
extern int optopt;
const char *param_names[] = {
"gamma_phi", "gamma_chi",
"lambda_phi", "lambda_chi",
"g", "m_phi", "m_chi",
"phi0", "chi0", "phidot0", "chidot0",
"ics_scale", "monodromy_exp_phi", "monodromy_exp_chi",
"monodromy_scale_phi", "monodromy_scale_chi",
"H0", "phi0_slice", "chi0_slice",
"phidot0_slice", "chidot0_slice", "ics_eff_size", 0
};
const char *interval_names[] = {
"scale", "energy", "spectra",
"screen", "slice", "stats",
"twoptcorr", "all", 0
};
const char *slice_opt_names[] = {
"dim", "length", "skip",
"avg", "fullprec", 0
};
const char *slice_names[] = {
"phi", "chi", "phidot", "chidot",
"V", "V_phys",
"T_phi", "T_chi",
"T_phi_phys", "T_chi_phys",
"G_phi", "G_chi",
"G_phi_phys", "G_chi_phys",
"G_phi_x", "G_chi_x",
"G_phi_phys_x", "G_chi_phys_x",
"G_phi_y", "G_chi_y",
"G_phi_phys_y", "G_chi_phys_y",
"G_phi_z", "G_chi_z",
"G_phi_phys_z", "G_chi_phys_z",
"grad_phi_phys_x", "grad_chi_phys_x",
"grad_phi_phys_y", "grad_chi_phys_y",
"grad_phi_phys_z", "grad_chi_phys_z",
"rho", "rho_phys", "p", "p_phys",
"gpot", 0
};
const char *field_names[] = {
"phi", "chi", 0
};
bool show_usage = false, help_requested = false;
bool slice_phi = false, slice_chi = false,
slice_phidot = false, slice_chidot = false,
slice_V = false, slice_V_phys = false,
slice_T_phi = false, slice_T_chi = false,
slice_T_phi_phys = false, slice_T_chi_phys = false,
slice_G_phi = false, slice_G_chi = false,
slice_G_phi_phys = false, slice_G_chi_phys = false,
slice_G_phi_x = false, slice_G_chi_x = false,
slice_G_phi_phys_x = false, slice_G_chi_phys_x = false,
slice_G_phi_y = false, slice_G_chi_y = false,
slice_G_phi_phys_y = false, slice_G_chi_phys_y = false,
slice_G_phi_z = false, slice_G_chi_z = false,
slice_G_phi_phys_z = false, slice_G_chi_phys_z = false,
slice_grad_phi_phys_x = false, slice_grad_chi_phys_x = false,
slice_grad_phi_phys_y = false, slice_grad_chi_phys_y = false,
slice_grad_phi_phys_z = false, slice_grad_chi_phys_z = false,
slice_rho = false, slice_p = false,
slice_rho_phys = false, slice_p_phys = false,
slice_gpot = false;
int slicedim = 3, slicelength = 0, sliceskip = 1;
bool sliceaverage = false, sliceflt = true;
bool oop = false;
string odn;
while ((opt = getopt(argc, argv, ":rlVB:hH:ON:P:L:R:p:o:t:T:A:s:S:I:z:e")) != -1) {
switch (opt) {
case 'h':
help_requested = true;
show_usage = true;
break;
case 'r':
use_verlet = false;
break;
case 'l':
le_init = true;
break;
case 'B':
len0 = atof(optarg);
break;
case 'V':
vvwl = true;
break;
case 'H':
subopts = optarg;
while (*subopts != '\0') {
int index = getsubopt(&subopts, (char**) field_names, &value);
if (index < 0) {
cerr << "Invalid field specification: " << value << endl;
show_usage = true;
}
else if (!strcmp(field_names[index], "phi")) {
homo_ic_phi = true;
}
else if (!strcmp(field_names[index], "chi")) {
homo_ic_chi = true;
}
}
break;
case 'O':
oop = true;
break;
case 'e':
mp.pwr_exp = true;
break;
case 'N':
fs.n = atoi(optarg);
break;
case 'P':
fs.n_pad_factor = atoi(optarg);
break;
case 'L':
mp.len = atof(optarg);
break;
case 'R':
seed = atoi(optarg);
break;
case 'o':
odn = optarg;
break;
case 'p':
subopts = optarg;
while (*subopts != '\0') {
int index = getsubopt(&subopts, (char**) param_names, &value);
if (index < 0) {
cerr << "Invalid parameter specification: " << value << endl;
show_usage = true;
}
else if (!value) {
cerr << "No value specified for parameter: " << param_names[index] << endl;
show_usage = true;
}
else if (!strcmp(param_names[index], "gamma_phi")) {
mp.gamma_phi = atof(value);
}
else if (!strcmp(param_names[index], "gamma_chi")) {
mp.gamma_chi = atof(value);
}
else if (!strcmp(param_names[index], "lambda_phi")) {
mp.lambda_phi = atof(value);
}
else if (!strcmp(param_names[index], "lambda_chi")) {
mp.lambda_chi = atof(value);
}
else if (!strcmp(param_names[index], "g")) {
mp.g = atof(value);
}
else if (!strcmp(param_names[index], "m_phi")) {
mp.m_phi = atof(value);
}
else if (!strcmp(param_names[index], "m_chi")) {
mp.m_chi = atof(value);
}
else if (!strcmp(param_names[index], "phi0")) {
mp.phi0 = atof(value);
}
else if (!strcmp(param_names[index], "chi0")) {
mp.chi0 = atof(value);
}
else if (!strcmp(param_names[index], "phidot0")) {
mp.phidot0 = atof(value);
}
else if (!strcmp(param_names[index], "chidot0")) {
mp.chidot0 = atof(value);
}
else if (!strcmp(param_names[index], "ics_scale")) {
ics_scale = atof(value);
}
else if (!strcmp(param_names[index], "monodromy_exp_phi")) {
mp.md_e_phi = atof(value);
}
else if (!strcmp(param_names[index], "monodromy_exp_chi")) {
mp.md_e_chi = atof(value);
}
else if (!strcmp(param_names[index], "monodromy_scale_phi")) {
mp.md_s_phi = atof(value);
}
else if (!strcmp(param_names[index], "H0")) {
// Parse as H0:a0, where a0 is 1 by default.
char *en;
R H0 = strtod(value, &en);
R a0 = 1.0, Hdot0 = 0.0;
if (*en != 0) {
char *en2;
a0 = strtod(en + 1, &en2);
if (*en2 != 0) {
Hdot0 = atof(en2 + 1);
}
}
ts.a = a0;
ts.adot = H0 * ts.a;
ts.addot = Hdot0 * ts.a;
external_H0 = true;
}
else if (!strcmp(param_names[index], "phi0_slice")) {
phi0_slice = std::string(value);
}
else if (!strcmp(param_names[index], "chi0_slice")) {
chi0_slice = std::string(value);
}
else if (!strcmp(param_names[index], "phidot0_slice")) {
phidot0_slice = std::string(value);
}
else if (!strcmp(param_names[index], "chidot0_slice")) {
chidot0_slice = std::string(value);
}
else if (!strcmp(param_names[index], "ics_eff_size")) {
ics_eff_size = atoi(value);
}
}
break;
case 't':
// Parse as dt or dt:start_time
{
char *en;
R dt = strtod(optarg, &en);
R start_time = 0.0;
if (*en != 0) {
start_time = atof(en + 1);
}
ts.add_dt(start_time, dt);
}
break;
case 'T':
tf = atof(optarg);
break;
case 'A':
af = atof(optarg);
break;
case 's':
subopts = optarg;
while (*subopts != '\0') {
int index = getsubopt(&subopts, (char**) slice_names, &value);
if (index < 0) {
cerr << "Invalid slice output specification: " << value << endl;
show_usage = true;
}
else if (!strcmp(slice_names[index], "phi")) {
slice_phi = true;
}
else if (!strcmp(slice_names[index], "chi")) {
slice_chi = true;
}
else if (!strcmp(slice_names[index], "phidot")) {
slice_phidot = true;
}
else if (!strcmp(slice_names[index], "chidot")) {
slice_chidot = true;
}
else if (!strcmp(slice_names[index], "V")) {
slice_V = true;
}
else if (!strcmp(slice_names[index], "V_phys")) {
slice_V_phys = true;
}
else if (!strcmp(slice_names[index], "T_phi")) {
slice_T_phi = true;
}
else if (!strcmp(slice_names[index], "T_chi")) {
slice_T_chi = true;
}
else if (!strcmp(slice_names[index], "T_phi_phys")) {
slice_T_phi_phys = true;
}
else if (!strcmp(slice_names[index], "T_chi_phys")) {
slice_T_chi_phys = true;
}
else if (!strcmp(slice_names[index], "G_phi")) {
slice_G_phi = true;
}
else if (!strcmp(slice_names[index], "G_chi")) {
slice_G_chi = true;
}
else if (!strcmp(slice_names[index], "G_phi_phys")) {
slice_G_phi_phys = true;
}
else if (!strcmp(slice_names[index], "G_chi_phys")) {
slice_G_chi_phys = true;
}
else if (!strcmp(slice_names[index], "G_phi_x")) {
slice_G_phi_x = true;
}
else if (!strcmp(slice_names[index], "G_chi_x")) {
slice_G_chi_x = true;
}
else if (!strcmp(slice_names[index], "G_phi_phys_x")) {
slice_G_phi_phys_x = true;
}
else if (!strcmp(slice_names[index], "G_chi_phys_x")) {
slice_G_chi_phys_x = true;
}
else if (!strcmp(slice_names[index], "G_phi_y")) {
slice_G_phi_y = true;
}
else if (!strcmp(slice_names[index], "G_chi_y")) {
slice_G_chi_y = true;
}
else if (!strcmp(slice_names[index], "G_phi_phys_y")) {
slice_G_phi_phys_y = true;
}
else if (!strcmp(slice_names[index], "G_chi_phys_y")) {
slice_G_chi_phys_y = true;
}
else if (!strcmp(slice_names[index], "G_phi_z")) {
slice_G_phi_z = true;
}
else if (!strcmp(slice_names[index], "G_chi_z")) {
slice_G_chi_z = true;
}
else if (!strcmp(slice_names[index], "G_phi_phys_z")) {
slice_G_phi_phys_z = true;
}
else if (!strcmp(slice_names[index], "G_chi_phys_z")) {
slice_G_chi_phys_z = true;
}
else if (!strcmp(slice_names[index], "grad_phi_phys_x")) {
slice_grad_phi_phys_x = true;
}
else if (!strcmp(slice_names[index], "grad_chi_phys_x")) {
slice_grad_chi_phys_x = true;
}
else if (!strcmp(slice_names[index], "grad_phi_phys_y")) {
slice_grad_phi_phys_y = true;
}
else if (!strcmp(slice_names[index], "grad_chi_phys_y")) {
slice_grad_chi_phys_y = true;
}
else if (!strcmp(slice_names[index], "grad_phi_phys_z")) {
slice_grad_phi_phys_z = true;
}
else if (!strcmp(slice_names[index], "grad_chi_phys_z")) {
slice_grad_chi_phys_z = true;
}
else if (!strcmp(slice_names[index], "rho")) {
slice_rho = true;
}
else if (!strcmp(slice_names[index], "rho_phys")) {
slice_rho_phys = true;
}
else if (!strcmp(slice_names[index], "p")) {
slice_p = true;
}
else if (!strcmp(slice_names[index], "p_phys")) {
slice_p_phys = true;
}
else if (!strcmp(slice_names[index], "gpot")) {
slice_gpot = true;
}
}
break;
case 'S':
subopts = optarg;
while (*subopts != '\0') {
int index = getsubopt(&subopts, (char**) slice_opt_names, &value);
if (index < 0) {
cerr << "Invalid slice option specification: " << value << endl;
show_usage = true;
}
else if (!strcmp(slice_opt_names[index], "avg")) {
sliceaverage = true;
}
else if (!strcmp(slice_opt_names[index], "fullprec")) {
sliceflt = false;
}
else if (!value) {
cerr << "No value specified for slice option: " << slice_opt_names[index] << endl;
show_usage = true;
}
else if (!strcmp(slice_opt_names[index], "dim")) {
slicedim = atoi(value);
}
else if (!strcmp(slice_opt_names[index], "length")) {
slicelength = atoi(value);
}
else if (!strcmp(slice_opt_names[index], "skip")) {
sliceskip = atoi(value) + 1;
}
}
break;
case 'I':
subopts = optarg;
while (*subopts != '\0') {
int index = getsubopt(&subopts, (char**) interval_names, &value);
if (index < 0) {
cerr << "Invalid interval specification: " << value << endl;
show_usage = true;
}
else if (!value) {
cerr << "No value specified for interval: " << param_names[index] << endl;
show_usage = true;
}
else {
char *en;
int iv = (int) strtol(value, &en, 10);
R start_time = 0.0;
if (*en != '0') {
start_time = atof(en + 1);
}
if (!strcmp(interval_names[index], "scale")) {
scale_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "energy")) {
energy_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "spectra")) {
spectra_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "screen")) {
screen_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "slice")) {
slice_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "stats")) {
stats_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "twoptcorr")) {
twoptcorr_intervals.add_value(start_time, iv);
}
else if (!strcmp(interval_names[index], "all")) {
scale_intervals.add_value(start_time, iv);
energy_intervals.add_value(start_time, iv);
spectra_intervals.add_value(start_time, iv);
screen_intervals.add_value(start_time, iv);
slice_intervals.add_value(start_time, iv);
stats_intervals.add_value(start_time, iv);
twoptcorr_intervals.add_value(start_time, iv);
}
}
}
break;
case 'z':
#ifdef HAVE_PRIVATE
subopts = optarg;
while (*subopts != '\0') {
int index = getsubopt(&subopts, (char**) priv.get_opt_names(), &value);
if (index < 0) {
cerr << "Invalid parameter specification: " << value << endl;
show_usage = true;
}
else if (!priv.process_opt(priv.get_opt_names()[index], value)) {
cerr << "No/Invalid value specified for parameter: " << priv.get_opt_names()[index] << endl;
show_usage = true;
}
}
#endif
break;
case ':':
cerr << "Missing operand for option " << (char) optopt << endl;
show_usage = true;
break;
case '?':
cerr << "Unrecognized option: " << (char) optopt << endl;
show_usage = true;
break;
}
}
if (optind < argc) {
cerr << "The following options could not be parsed: \"";
for (int i = optind; i < argc; ++i) {
cerr << argv[i] << (i < (argc-1) ? " " : "");
}
cerr << "\"" << endl;
show_usage = true;
}
if (show_usage) {
ostream &hout = help_requested ? cout : cerr;
hout << "SpectRE Usage:" << endl;
hout << argv[0] << " [-h]" << endl;
hout << argv[0] << " [-r] [-l [-B <real>]] [-V] [-H <name>[,<name>]*] [-O] [-N <int>] [-P <int>] [-L <real>] [-R <int>] "
"[-o <dir name>] [-t <real>[:<real>]] [-T <real>] [-A <real>] "
"[-p <name>=<value>[,<name>=<value>]*] [-e] [-s <name>[,<name>]*] [-S <name>[=<value>][,<name>[=<value>]]*] "
"[-I <name>=<value>[,<name>=<value>]*] "
#ifdef HAVE_PRIVATE
"[-z <name>[=<value>][,<name>[=<value>]]*] "
#endif
#ifdef USE_LD
"[--long] "
#endif
"[@<file name>]"
<< endl;
hout << endl;
hout << "\t-h: Display usage information and exit" << endl;
hout << "\t-r: Use the RK4 integrator (default is the Verlet integrator)" << endl;
hout << "\t-l: Use LatticeEasy-style initial conditions (default is DEFROST-style initial conditions)" << endl;
hout << "\t-B: The base length scale (default is 1.0 to match LatticeEasy)" << endl;
hout << "\t-V: Allow the field variance to change with L" << endl;
hout << "\t-e: Use power-law expansion" << endl;
hout << "\t-H: Use homogeneous (zero variance) initial conditions. Field names are:" << endl;
for (int i = 0; i < (int) (sizeof(field_names)/sizeof(field_names[0])) - 1; ++i) {
hout << "\t\t" << field_names[i] << endl;
}
hout << "\t-O: Use out-of-place transforms" << endl;
hout << "\t-N <int>: The number of grid points per side of the box" << endl;
hout << "\t-P <int>: The padding factor used for position-space integration" << endl;
hout << "\t-L <real>: The physical size of the box" << endl;
hout << "\t-R <int>: The random seed" << endl;
hout << "\t-o <dir name>: Set the output directory name" << endl;
hout << "\t-t <real>[:<real>]: Set dt with an optional start time in program units" << endl;
hout << "\t-T <real>: The final time in program units" << endl;
hout << "\t-A <real>: The final scale factor" << endl;
hout << "\t-p <name>=<value>[,<name>=<value>]*: Set a parameter value. Valid parameters are:" << endl;
for (int i = 0; i < (int) (sizeof(param_names)/sizeof(param_names[0])) - 1; ++i) {
hout << "\t\t" << param_names[i] << endl;
}
hout << "\t\t(a0 can be specified when H0 is specified by appending :<a0> to the H0 value" << endl;
hout << "\t\t Hdot0 can be similarly appended for use with power-law background expansion)" << endl;
hout << "\t\t(file paths provided for *_slice parameters cannot contain comma characters)" << endl;
hout << "\t\t(ics_eff_size is an integer <= N)" << endl;
hout << "\t-s <name>[,<name>]*: Enable slice output of a variable. Valid variables are:" << endl;
for (int i = 0; i < (int) (sizeof(slice_names)/sizeof(slice_names[0])) - 1; ++i) {
hout << "\t\t" << slice_names[i] << endl;
}
hout << "\t-S <name>[=<value>][,<name>[=<value>]]*: Set a slice output option value. Valid options are:" << endl;
for (int i = 0; i < (int) (sizeof(slice_opt_names)/sizeof(slice_opt_names[0])) - 1; ++i) {
hout << "\t\t" << slice_opt_names[i] << endl;
}
hout << "\t\t(avg and fullprec do not take a value)" << endl;
hout << "\t-I <name>=<value>[:<real>][,<name>=<value>[:<real>]]*: Set an output interval with an optional start time. Valid intervals are:" << endl;
for (int i = 0; i < (int) (sizeof(interval_names)/sizeof(interval_names[0])) - 1; ++i) {
hout << "\t\t" << interval_names[i] << endl;
}
hout << "\t\t(intervals are specified as a number of iterations)" << endl;
#ifdef HAVE_PRIVATE
hout << "\t-z <name>[=<value>][,<name>[=<value>]]*: Set a private option value. Valid options are:" << endl;
for (int i = 0; priv.get_opt_names()[i]; ++i) {
hout << "\t\t" << priv.get_opt_names()[i] << endl;
}
hout << "\t\t(some options may not take a value)" << endl;
#endif
#ifdef USE_LD
hout << "\t--long: Run using long-double (extended) precision (this must be the *last* command-line option argument)" << endl;
#endif
hout << "\t@<file name>: The name of a parameters file" << endl;
exit(help_requested ? 0 : 1);
}
#ifdef MKL_NO_DCT
if (!le_init) {
cout << "Using LatticeEasy-style initial conditions (cannot use DEFROST-style initial conditions with MKL 10)" << endl;
le_init = true;
}
#endif
ts.finalize_dts();
scale_intervals.finalize_values();
energy_intervals.finalize_values();
spectra_intervals.finalize_values();
screen_intervals.finalize_values();
slice_intervals.finalize_values();
stats_intervals.finalize_values();
twoptcorr_intervals.finalize_values();
srand48(seed);
cout << "Using " << precision_name<R>() << " precision." << endl;
mp.calculate_derived_params(true);
#ifdef DOT0_IN_PLANCK
mp.phidot0 *= mp.rescale_B;
mp.chidot0 *= mp.rescale_B;
#endif
fs.calculate_size_totals();
phi.construct(fs, oop);
phidot.construct(fs, oop);
chi.construct(fs, oop);
chidot.construct(fs, oop);
char *swd = 0; std::size_t swdl = 1024;
do {
delete [] swd;
swdl *= 2;
swd = new char[swdl];
} while (!getcwd(swd, swdl) && errno == ERANGE);
start_wd = swd;
delete [] swd;
set_output_directory(odn.c_str());
gc = new grad_computer<R>(fs, mp, phi, chi);
gpotc = new gpot_computer<R>(fs, mp, ts, phi, chi, phidot, chidot, *gc);
som = new slice_output_manager<R>(fs, mp, ts, phi, chi, phidot, chidot, *gc, *gpotc,
slicedim, slicelength, sliceskip, sliceaverage, sliceflt);
if (slice_phi) som->add_outputter("phi", grid_funcs<R>::compute_phi);
if (slice_chi) som->add_outputter("chi", grid_funcs<R>::compute_chi);
if (slice_phidot) som->add_outputter("phidot", grid_funcs<R>::compute_phidot);
if (slice_chidot) som->add_outputter("chidot", grid_funcs<R>::compute_chidot);
if (slice_V) som->add_outputter("V", grid_funcs<R>::compute_V);
if (slice_V_phys) som->add_outputter("V_phys", grid_funcs<R>::compute_V_phys);
if (slice_T_phi) som->add_outputter("T_phi", grid_funcs<R>::compute_T_phi);
if (slice_T_chi) som->add_outputter("T_chi", grid_funcs<R>::compute_T_chi);
if (slice_T_phi_phys) som->add_outputter("T_phi_phys", grid_funcs<R>::compute_T_phi_phys);
if (slice_T_chi_phys) som->add_outputter("T_chi_phys", grid_funcs<R>::compute_T_chi_phys);
if (slice_G_phi) som->add_outputter("G_phi", grid_funcs<R>::compute_G_phi);
if (slice_G_chi) som->add_outputter("G_chi", grid_funcs<R>::compute_G_chi);
if (slice_G_phi_phys) som->add_outputter("G_phi_phys", grid_funcs<R>::compute_G_phi_phys);
if (slice_G_chi_phys) som->add_outputter("G_chi_phys", grid_funcs<R>::compute_G_chi_phys);
if (slice_G_phi_x) som->add_outputter("G_phi_x", grid_funcs<R>::compute_G_phi_x);
if (slice_G_chi_x) som->add_outputter("G_chi_x", grid_funcs<R>::compute_G_chi_x);
if (slice_G_phi_phys_x) som->add_outputter("G_phi_phys_x", grid_funcs<R>::compute_G_phi_phys_x);
if (slice_G_chi_phys_x) som->add_outputter("G_chi_phys_x", grid_funcs<R>::compute_G_chi_phys_x);
if (slice_G_phi_y) som->add_outputter("G_phi_y", grid_funcs<R>::compute_G_phi_y);
if (slice_G_chi_y) som->add_outputter("G_chi_y", grid_funcs<R>::compute_G_chi_y);
if (slice_G_phi_phys_y) som->add_outputter("G_phi_phys_y", grid_funcs<R>::compute_G_phi_phys_y);
if (slice_G_chi_phys_y) som->add_outputter("G_chi_phys_y", grid_funcs<R>::compute_G_chi_phys_y);
if (slice_G_phi_z) som->add_outputter("G_phi_z", grid_funcs<R>::compute_G_phi_z);
if (slice_G_chi_z) som->add_outputter("G_chi_z", grid_funcs<R>::compute_G_chi_z);
if (slice_G_phi_phys_z) som->add_outputter("G_phi_phys_z", grid_funcs<R>::compute_G_phi_phys_z);
if (slice_G_chi_phys_z) som->add_outputter("G_chi_phys_z", grid_funcs<R>::compute_G_chi_phys_z);
if (slice_grad_phi_phys_x) som->add_outputter("grad_phi_phys_x", grid_funcs<R>::compute_grad_phi_phys_x);
if (slice_grad_chi_phys_x) som->add_outputter("grad_chi_phys_x", grid_funcs<R>::compute_grad_chi_phys_x);
if (slice_grad_phi_phys_y) som->add_outputter("grad_phi_phys_y", grid_funcs<R>::compute_grad_phi_phys_y);
if (slice_grad_chi_phys_y) som->add_outputter("grad_chi_phys_y", grid_funcs<R>::compute_grad_chi_phys_y);
if (slice_grad_phi_phys_z) som->add_outputter("grad_phi_phys_z", grid_funcs<R>::compute_grad_phi_phys_z);
if (slice_grad_chi_phys_z) som->add_outputter("grad_chi_phys_z", grid_funcs<R>::compute_grad_chi_phys_z);
if (slice_rho) som->add_outputter("rho", grid_funcs<R>::compute_rho);
if (slice_rho_phys) som->add_outputter("rho_phys", grid_funcs<R>::compute_rho_phys);
if (slice_p) som->add_outputter("p", grid_funcs<R>::compute_p);
if (slice_p_phys) som->add_outputter("p_phys", grid_funcs<R>::compute_p_phys);
if (slice_gpot) som->add_outputter("gpot", grid_funcs<R>::compute_gpot);
#ifdef HAVE_PRIVATE
priv.initialize(fs);
#endif
}
template <typename R>
model<R>::~model()
{
delete gc;
delete gpotc;
delete som;
}
template <typename R>
void model<R>::set_initial_conditions()
{
// This is the initial value of adot, and since a = 1 at t = 0, this is the initial value of H.
// See equation 6.91 in the LatticeEasy manual.
// Note that the relationship between phidot0 in physical and program units is bit complicated:
// f_pr = A a^r f => f'_pr = d/dt_pr f_pr = d/dt_pr A a^r f = 1/B a^{-s} d/dt ( A a^r f ) =>
// f'_pr = A/B a^{-s} d/dt ( a^r f ) = A/B a^{-s} [ a^r f' + r a^{r-1} a' f ] =>
// f'_pr = A/B [ a^{r-s} f' + r a^{r-1-s} a' f ]
// So setting a' depends on f'_pr and vice versa, so we'll iterate to convergence...
if (!external_H0) {
phidot0pr = mp.rescale_A*mp.phidot0;
chidot0pr = mp.rescale_A*mp.chidot0;
const R adot_thrsh = 1e-14;
R adot_prev;
int adot_iters = 0;
ts.adot = 0.0;
do {
adot_prev = ts.adot;
R hf = 3. * pow<2>(mp.rescale_A)/(4. * M_PI);
R h0norm = 1. / (hf - pow<2>(mp.rescale_r*mp.rescale_A) * (pow<2>(mp.phi0) + pow<2>(mp.chi0)));
for (int s = -1; s <= 1; s += 2) {
ts.adot = h0norm * (
-mp.rescale_r*pow<2>(mp.rescale_A)*((phidot0pr/mp.rescale_A)*mp.phi0 + (chidot0pr/mp.rescale_A)*mp.chi0) +
s*sqrt(
hf * (pow<2>(phidot0pr) + pow<2>(chidot0pr)) +
2. * mp.V(mp.rescale_A * mp.phi0, mp.rescale_A * mp.chi0, 1.) *
(hf - pow<2>(mp.rescale_r*mp.rescale_A)*(pow<2>(mp.phi0) + pow<2>(mp.chi0)))
)
);
if (ts.adot >= 0) {
break;
}
}
// Assuming here that a = 1.
phidot0pr = mp.rescale_A*(mp.phidot0 + mp.rescale_r*ts.adot*mp.phi0);
chidot0pr = mp.rescale_A*(mp.chidot0 + mp.rescale_r*ts.adot*mp.chi0);
++adot_iters;
} while (adot_iters < 2 || fabs(ts.adot - adot_prev) > ts.adot*adot_thrsh);
cout << "Initial homogeneous adot (to be corrected later) = " << ts.adot << " (converged in " << adot_iters << " iteration(s))" << endl;
}
else {
phidot0pr = mp.rescale_A*(
pow(ts.a, mp.rescale_r - mp.rescale_s)*mp.phidot0 +
mp.rescale_r*pow(ts.a, mp.rescale_r-mp.rescale_s-1)*ts.adot*mp.phi0
);
chidot0pr = mp.rescale_A*(
pow(ts.a, mp.rescale_r - mp.rescale_s)*mp.chidot0 +