mirror of
https://github.com/cosmo-sims/MUSIC.git
synced 2024-09-19 17:03:46 +02:00
332 lines
11 KiB
C++
332 lines
11 KiB
C++
/*
|
|
|
|
transfer_camb.cc - This file is part of MUSIC -
|
|
a code to generate multi-scale initial conditions for cosmological simulations
|
|
|
|
Copyright (C) 2010 Oliver Hahn
|
|
|
|
*/
|
|
|
|
#include "transfer_function.hh"
|
|
|
|
const double tiny = 1e-30;
|
|
|
|
class transfer_CAMB_plugin : public transfer_function_plugin {
|
|
|
|
private:
|
|
std::string m_filename_Pk, m_filename_Tk;
|
|
std::vector<double> m_tab_k, m_tab_Tk_tot, m_tab_Tk_cdm, m_tab_Tk_baryon;
|
|
std::vector<double> m_tab_Tvk_tot, m_tab_Tvk_cdm, m_tab_Tvk_baryon;
|
|
gsl_interp_accel *acc_tot, *acc_cdm, *acc_baryon;
|
|
gsl_interp_accel *acc_vtot, *acc_vcdm, *acc_vbaryon;
|
|
gsl_spline *spline_tot, *spline_cdm, *spline_baryon;
|
|
gsl_spline *spline_vtot, *spline_vcdm, *spline_vbaryon;
|
|
|
|
double m_kmin, m_kmax, m_Omega_b, m_Omega_m, m_zstart;
|
|
unsigned m_nlines;
|
|
|
|
bool m_linbaryoninterp;
|
|
|
|
void read_table(void) {
|
|
|
|
m_nlines = 0;
|
|
m_linbaryoninterp = false;
|
|
|
|
#ifdef WITH_MPI
|
|
if (MPI::COMM_WORLD.Get_rank() == 0) {
|
|
#endif
|
|
LOGINFO("Reading tabulated transfer function data from file \n \'%s\'",
|
|
m_filename_Tk.c_str());
|
|
|
|
LOGINFO("CAUTION: make sure that this transfer function \n\t has been output for z=%f!",m_zstart);
|
|
|
|
std::string line;
|
|
std::ifstream ifs(m_filename_Tk.c_str());
|
|
|
|
if (!ifs.good())
|
|
throw std::runtime_error("Could not find transfer function file \'" +
|
|
m_filename_Tk + "\'");
|
|
|
|
m_tab_k.clear();
|
|
m_tab_Tk_tot.clear();
|
|
m_tab_Tk_cdm.clear();
|
|
m_tab_Tk_baryon.clear();
|
|
m_tab_Tvk_tot.clear();
|
|
m_tab_Tvk_cdm.clear(); //>[150609SH: add]
|
|
m_tab_Tvk_baryon.clear(); //>[150609SH: add]
|
|
|
|
m_kmin = 1e30;
|
|
m_kmax = -1e30;
|
|
std::ofstream ofs("dump_transfer.txt");
|
|
|
|
while (!ifs.eof()) {
|
|
getline(ifs, line);
|
|
if (ifs.eof()) break;
|
|
|
|
// OH: ignore line if it has a comment:
|
|
if (line.find("#") != std::string::npos) continue;
|
|
|
|
std::stringstream ss(line);
|
|
|
|
double k, Tkc, Tkb, Tktot, Tkvtot, Tkvc, Tkvb, dummy;
|
|
|
|
ss >> k;
|
|
ss >> Tkc; // cdm
|
|
ss >> Tkb; // baryon
|
|
ss >> dummy; // photon
|
|
ss >> dummy; // nu
|
|
ss >> dummy; // mass_nu
|
|
ss >> Tktot; // total
|
|
ss >> dummy; // no_nu
|
|
ss >> dummy; // total_de
|
|
ss >> dummy; // Weyl
|
|
ss >> Tkvc; //>[150609SH: add] // v_cdm
|
|
ss >> Tkvb; //>[150609SH: add] // v_b
|
|
ss >> dummy; // v_b-v_cdm
|
|
|
|
if( ss.bad() || ss.fail() ){
|
|
LOGERR("Error reading the transfer function file (corrupt or not in expected format)!");
|
|
throw std::runtime_error("Error reading transfer function file \'" +
|
|
m_filename_Tk + "\'");
|
|
}
|
|
|
|
if( Omega_b < 1e-6 ) Tkvtot = Tktot;
|
|
else Tkvtot=((m_Omega_m-m_Omega_b)*Tkvc+m_Omega_b*Tkvb)/m_Omega_m; //MvD
|
|
|
|
m_linbaryoninterp |= Tkb < 0.0 || Tkvb < 0.0;
|
|
|
|
m_tab_k.push_back(log10(k));
|
|
|
|
m_tab_Tk_tot.push_back(Tktot);
|
|
m_tab_Tk_baryon.push_back(Tkb);
|
|
m_tab_Tk_cdm.push_back(Tkc);
|
|
m_tab_Tvk_tot.push_back(Tkvtot);
|
|
m_tab_Tvk_baryon.push_back(Tkvb);
|
|
m_tab_Tvk_cdm.push_back(Tkvc);
|
|
|
|
++m_nlines;
|
|
|
|
if (k < m_kmin)
|
|
m_kmin = k;
|
|
if (k > m_kmax)
|
|
m_kmax = k;
|
|
}
|
|
|
|
for (size_t i = 0; i < m_tab_k.size(); ++i) {
|
|
m_tab_Tk_tot[i] = log10(m_tab_Tk_tot[i]);
|
|
m_tab_Tk_cdm[i] = log10(m_tab_Tk_cdm[i]);
|
|
m_tab_Tvk_cdm[i] = log10(m_tab_Tvk_cdm[i]);
|
|
m_tab_Tvk_tot[i] = log10(m_tab_Tvk_tot[i]);
|
|
|
|
if (!m_linbaryoninterp) {
|
|
m_tab_Tk_baryon[i] = log10(m_tab_Tk_baryon[i]);
|
|
m_tab_Tvk_baryon[i] = log10(m_tab_Tvk_baryon[i]);
|
|
}
|
|
}
|
|
|
|
ifs.close();
|
|
|
|
LOGINFO("Read CAMB transfer function table with %d rows", m_nlines);
|
|
|
|
if (m_linbaryoninterp)
|
|
LOGINFO("Using log-lin interpolation for baryons\n (TF is not "
|
|
"positive definite)");
|
|
|
|
#ifdef WITH_MPI
|
|
}
|
|
|
|
unsigned n = m_tab_k.size();
|
|
MPI::COMM_WORLD.Bcast(&n, 1, MPI_UNSIGNED, 0);
|
|
|
|
if (MPI::COMM_WORLD.Get_rank() > 0) {
|
|
m_tab_k.assign(n, 0);
|
|
m_tab_Tk_tot.assign(n, 0);
|
|
m_tab_Tk_cdm.assign(n, 0);
|
|
m_tab_Tk_baryon.assign(n, 0);
|
|
m_tab_Tvk_tot.assign(n, 0);
|
|
m_tab_Tvk_cdm.assign(n, 0); //>[150609SH: add]
|
|
m_tab_Tvk_baryon.assign(n, 0); //>[150609SH: add]
|
|
}
|
|
|
|
MPI::COMM_WORLD.Bcast(&m_tab_k[0], n, MPI_DOUBLE, 0);
|
|
MPI::COMM_WORLD.Bcast(&m_tab_Tk_tot[0], n, MPI_DOUBLE, 0);
|
|
MPI::COMM_WORLD.Bcast(&m_tab_Tk_cdm[0], n, MPI_DOUBLE, 0);
|
|
MPI::COMM_WORLD.Bcast(&m_tab_Tk_baryon[0], n, MPI_DOUBLE, 0);
|
|
MPI::COMM_WORLD.Bcast(&m_tab_Tvk_tot[0], n, MPI_DOUBLE, 0);
|
|
MPI::COMM_WORLD.Bcast(&m_tab_Tvk_cdm[0], n, MPI_DOUBLE,
|
|
0); //>[150609SH: add]
|
|
MPI::COMM_WORLD.Bcast(&m_tab_Tvk_baryon[0], n, MPI_DOUBLE,
|
|
0); //>[150609SH: add]
|
|
|
|
#endif
|
|
}
|
|
|
|
public:
|
|
transfer_CAMB_plugin(config_file &cf)
|
|
: transfer_function_plugin(cf)
|
|
{
|
|
m_filename_Tk = pcf_->getValue<std::string>("cosmology", "transfer_file");
|
|
m_Omega_m=cf.getValue<double>("cosmology","Omega_m"); //MvD
|
|
m_Omega_b=cf.getValue<double>("cosmology","Omega_b"); //MvD
|
|
m_zstart =cf.getValue<double>("setup","zstart"); //MvD
|
|
|
|
read_table();
|
|
|
|
acc_tot = gsl_interp_accel_alloc();
|
|
acc_cdm = gsl_interp_accel_alloc();
|
|
acc_baryon = gsl_interp_accel_alloc();
|
|
acc_vtot = gsl_interp_accel_alloc(); //>[150609SH: add]
|
|
acc_vcdm = gsl_interp_accel_alloc(); //>[150609SH: add]
|
|
acc_vbaryon = gsl_interp_accel_alloc(); //>[150609SH: add]
|
|
|
|
spline_tot = gsl_spline_alloc(gsl_interp_cspline, m_tab_k.size());
|
|
spline_cdm = gsl_spline_alloc(gsl_interp_cspline, m_tab_k.size());
|
|
spline_baryon = gsl_spline_alloc(gsl_interp_cspline, m_tab_k.size());
|
|
spline_vtot = gsl_spline_alloc(gsl_interp_cspline, m_tab_k.size());
|
|
spline_vcdm =
|
|
gsl_spline_alloc(gsl_interp_cspline, m_tab_k.size()); //>[150609SH: add]
|
|
spline_vbaryon =
|
|
gsl_spline_alloc(gsl_interp_cspline, m_tab_k.size()); //>[150609SH: add]
|
|
|
|
gsl_spline_init(spline_tot, &m_tab_k[0], &m_tab_Tk_tot[0], m_tab_k.size());
|
|
gsl_spline_init(spline_cdm, &m_tab_k[0], &m_tab_Tk_cdm[0], m_tab_k.size());
|
|
gsl_spline_init(spline_baryon, &m_tab_k[0], &m_tab_Tk_baryon[0],
|
|
m_tab_k.size());
|
|
gsl_spline_init(spline_vtot, &m_tab_k[0], &m_tab_Tvk_tot[0],
|
|
m_tab_k.size()); //>[150609SH: add]
|
|
gsl_spline_init(spline_vcdm, &m_tab_k[0], &m_tab_Tvk_cdm[0],
|
|
m_tab_k.size()); //>[150609SH: add]
|
|
gsl_spline_init(spline_vbaryon, &m_tab_k[0], &m_tab_Tvk_baryon[0],
|
|
m_tab_k.size()); //>[150609SH: add]
|
|
|
|
tf_distinct_ = true; // [150612SH: different density between CDM v.s. Baryon]
|
|
tf_withvel_ = true; // [150612SH: using velocity transfer function]
|
|
}
|
|
|
|
~transfer_CAMB_plugin() {
|
|
gsl_spline_free(spline_tot);
|
|
gsl_spline_free(spline_cdm);
|
|
gsl_spline_free(spline_baryon);
|
|
gsl_spline_free(spline_vtot);
|
|
gsl_spline_free(spline_vcdm); //>[150609SH: add]
|
|
gsl_spline_free(spline_vbaryon); //>[150609SH: add]
|
|
|
|
gsl_interp_accel_free(acc_tot);
|
|
gsl_interp_accel_free(acc_cdm);
|
|
gsl_interp_accel_free(acc_baryon);
|
|
gsl_interp_accel_free(acc_vtot);
|
|
gsl_interp_accel_free(acc_vcdm); //>[150609SH: add]
|
|
gsl_interp_accel_free(acc_vbaryon); //>[150609SH: add]
|
|
}
|
|
|
|
// linear interpolation in log-log
|
|
inline double extrap_right(double k, const tf_type &type) {
|
|
int n = m_tab_k.size() - 1, n1 = n - 1;
|
|
|
|
double v1(1.0), v2(1.0);
|
|
|
|
double lk = log10(k);
|
|
double dk = m_tab_k[n] - m_tab_k[n1];
|
|
double delk = lk - m_tab_k[n];
|
|
|
|
switch (type) {
|
|
case cdm:
|
|
v1 = m_tab_Tk_cdm[n1];
|
|
v2 = m_tab_Tk_cdm[n];
|
|
return pow(10.0, (v2 - v1) / dk * (delk) + v2);
|
|
case baryon:
|
|
v1 = m_tab_Tk_baryon[n1];
|
|
v2 = m_tab_Tk_baryon[n];
|
|
if (m_linbaryoninterp)
|
|
return std::max((v2 - v1) / dk * (delk) + v2, tiny);
|
|
return pow(10.0, (v2 - v1) / dk * (delk) + v2);
|
|
case vtotal: //>[150609SH: add]
|
|
v1 = m_tab_Tvk_tot[n1];
|
|
v2 = m_tab_Tvk_tot[n];
|
|
return pow(10.0, (v2 - v1) / dk * (delk) + v2);
|
|
case vcdm: //>[150609SH: add]
|
|
v1 = m_tab_Tvk_cdm[n1];
|
|
v2 = m_tab_Tvk_cdm[n];
|
|
return pow(10.0, (v2 - v1) / dk * (delk) + v2);
|
|
case vbaryon: //>[150609SH: add]
|
|
v1 = m_tab_Tvk_baryon[n1];
|
|
v2 = m_tab_Tvk_baryon[n];
|
|
if (m_linbaryoninterp)
|
|
return std::max((v2 - v1) / dk * (delk) + v2, tiny);
|
|
return pow(10.0, (v2 - v1) / dk * (delk) + v2);
|
|
case total:
|
|
v1 = m_tab_Tk_tot[n1];
|
|
v2 = m_tab_Tk_tot[n];
|
|
return pow(10.0, (v2 - v1) / dk * (delk) + v2);
|
|
default:
|
|
throw std::runtime_error(
|
|
"Invalid type requested in transfer function evaluation");
|
|
}
|
|
|
|
return 0.0;
|
|
}
|
|
|
|
inline double compute(double k, tf_type type) {
|
|
// use constant interpolation on the left side of the tabulated values
|
|
if (k < m_kmin) {
|
|
switch (type) {
|
|
case cdm:
|
|
return pow(10.0, m_tab_Tk_cdm[0]);
|
|
case baryon:
|
|
if (m_linbaryoninterp)
|
|
return m_tab_Tk_baryon[0];
|
|
return pow(10.0, m_tab_Tk_baryon[0]);
|
|
case vtotal:
|
|
return pow(10.0, m_tab_Tvk_tot[0]);
|
|
case vcdm:
|
|
return pow(10.0, m_tab_Tvk_cdm[0]);
|
|
case vbaryon:
|
|
if (m_linbaryoninterp)
|
|
return m_tab_Tvk_baryon[0];
|
|
return pow(10.0, m_tab_Tvk_baryon[0]);
|
|
case total:
|
|
return pow(10.0, m_tab_Tk_tot[0]);
|
|
default:
|
|
throw std::runtime_error(
|
|
"Invalid type requested in transfer function evaluation");
|
|
}
|
|
}
|
|
// use linear interpolation on the right side of the tabulated values
|
|
else if (k > m_kmax)
|
|
return extrap_right(k, type);
|
|
|
|
double lk = log10(k);
|
|
switch (type) {
|
|
case cdm:
|
|
return pow(10.0, gsl_spline_eval(spline_cdm, lk, acc_cdm));
|
|
case baryon:
|
|
if (m_linbaryoninterp)
|
|
return gsl_spline_eval(spline_baryon, lk, acc_baryon);
|
|
return pow(10.0, gsl_spline_eval(spline_baryon, lk, acc_baryon));
|
|
case vtotal:
|
|
return pow(10.0, gsl_spline_eval(spline_vtot, lk, acc_vtot)); //MvD
|
|
case vcdm:
|
|
return pow(10.0, gsl_spline_eval(spline_vcdm, lk, acc_vcdm));
|
|
case vbaryon:
|
|
if (m_linbaryoninterp)
|
|
return gsl_spline_eval(spline_vbaryon, lk, acc_vbaryon);
|
|
return pow(10.0, gsl_spline_eval(spline_vbaryon, lk, acc_vbaryon));
|
|
case total:
|
|
return pow(10.0, gsl_spline_eval(spline_tot, lk, acc_tot));
|
|
default:
|
|
throw std::runtime_error(
|
|
"Invalid type requested in transfer function evaluation");
|
|
}
|
|
}
|
|
|
|
inline double get_kmin(void) { return pow(10.0, m_tab_k[1]); }
|
|
|
|
inline double get_kmax(void) {
|
|
return pow(10.0, m_tab_k[m_tab_k.size() - 2]);
|
|
}
|
|
};
|
|
|
|
namespace {
|
|
transfer_function_plugin_creator_concrete<transfer_CAMB_plugin>
|
|
creator("camb_file");
|
|
}
|