mirror of
https://github.com/Richard-Sti/csiborgtools.git
synced 2024-10-18 20:15:05 +02:00
d578c71b83
* Move files * Move files * Add galactic to RA/dec * Update sky maps * Add projected fields * Remove old import * Quick update * Add IO * Add imports * Update imports * Add basic file
129 lines
5.0 KiB
Python
129 lines
5.0 KiB
Python
# Copyright (C) 2022 Richard Stiskalek
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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"""
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Script to calculate the particle centre of mass and Lagrangian patch size in
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the initial snapshot. The initial snapshot particles are read from the sorted
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files.
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"""
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from argparse import ArgumentParser
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from datetime import datetime
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import csiborgtools
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import numpy
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from mpi4py import MPI
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from taskmaster import work_delegation
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from tqdm import tqdm
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from utils import get_nsims
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def _main(nsim, simname, verbose):
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"""
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Calculate and save the Lagrangian halo centre of mass and Lagrangian patch
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size in the initial snapshot.
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Parameters
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----------
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nsim : int
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IC realisation index.
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simname : str
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Simulation name.
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verbose : bool
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Verbosity flag.
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Returns
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-------
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None
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"""
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paths = csiborgtools.read.Paths(**csiborgtools.paths_glamdring)
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cols = [("index", numpy.int32),
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("x", numpy.float32),
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("y", numpy.float32),
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("z", numpy.float32),
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("lagpatch_size", numpy.float32),
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("lagpatch_ncells", numpy.int32),]
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if simname == "csiborg1":
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snap = csiborgtools.read.CSiBORG1Snapshot(nsim, 1, paths,
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keep_snapshot_open=True)
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cat = csiborgtools.read.CSiBORG1Catalogue(nsim, paths, snapshot=snap)
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fout = f"/mnt/extraspace/rstiskalek/csiborg1/chain_{nsim}/initial_lagpatch.npy" # noqa
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elif "csiborg2" in simname:
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kind = simname.split("_")[-1]
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snap = csiborgtools.read.CSiBORG2Snapshot(nsim, 0, kind, paths,
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keep_snapshot_open=True)
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cat = csiborgtools.read.CSiBORG2Catalogue(nsim, 99, kind, paths,
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snapshot=snap)
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fout = f"/mnt/extraspace/rstiskalek/csiborg2_{kind}/catalogues/initial_lagpatch_{nsim}.npy" # noqa
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elif simname == "quijote":
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snap = csiborgtools.read.QuijoteSnapshot(nsim, "ICs", paths,
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keep_snapshot_open=True)
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cat = csiborgtools.read.QuijoteHaloCatalogue(nsim, paths,
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snapshot=snap)
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fout = f"/mnt/extraspace/rstiskalek/quijote/fiducial_processed/chain_{nsim}/initial_lagpatch.npy" # noqa
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else:
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raise ValueError(f"Unknown simulation name `{simname}`.")
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boxsize = csiborgtools.simname2boxsize(simname)
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# Initialise the overlapper.
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if simname == "csiborg" or "csiborg2" in simname:
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kwargs = {"box_size": 2048, "bckg_halfsize": 512}
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else:
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kwargs = {"box_size": 512, "bckg_halfsize": 256}
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overlapper = csiborgtools.match.ParticleOverlap(**kwargs)
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out = csiborgtools.read.cols_to_structured(len(cat), cols)
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for i, hid in enumerate(tqdm(cat["index"]) if verbose else cat["index"]):
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out["index"][i] = hid
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pos = snap.halo_coordinates(hid)
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mass = snap.halo_masses(hid)
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# Calculate the centre of mass and the Lagrangian patch size.
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cm = csiborgtools.center_of_mass(pos, mass, boxsize=boxsize)
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distances = csiborgtools.periodic_distance(pos, cm, boxsize=boxsize)
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out["x"][i], out["y"][i], out["z"][i] = cm
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out["lagpatch_size"][i] = numpy.percentile(distances, 99)
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pos /= boxsize # need to normalize the positions to be [0, 1).
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# Calculate the number of cells with > 0 density.
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delta = overlapper.make_delta(pos, mass, subbox=True)
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out["lagpatch_ncells"][i] = csiborgtools.delta2ncells(delta)
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# Now save it
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if verbose:
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print(f"{datetime.now()}: dumping fits to .. `{fout}`.", flush=True)
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with open(fout, "wb") as f:
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numpy.save(f, out)
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if __name__ == "__main__":
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parser = ArgumentParser()
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parser.add_argument("--simname", type=str,
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choices=["csiborg1", "csiborg2_main", "csiborg2_random", "csiborg2_varysmall", "quijote"], # noqa
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help="Simulation name")
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parser.add_argument("--nsims", type=int, nargs="+", default=None,
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help="IC realisations. If `-1` processes all.")
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args = parser.parse_args()
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paths = csiborgtools.read.Paths(**csiborgtools.paths_glamdring)
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nsims = get_nsims(args, paths)
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def main(nsim):
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_main(nsim, args.simname, MPI.COMM_WORLD.Get_size() == 1)
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work_delegation(main, nsims, MPI.COMM_WORLD)
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