mirror of
https://github.com/Richard-Sti/csiborgtools.git
synced 2024-10-19 08:45:07 +02:00
cb5d35b1be
* Add iterative density field generation * Edit particle halfwidth selection * Update import * Remove old file * Add position wrapping * Add RSD support * Add density field calculation * Edit paths to the density field * Flip argument order * Edit documentation * Edit docs * update nb
70 lines
2.5 KiB
Python
70 lines
2.5 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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MPI script to calculate the density fields on CSiBORG simulations in the final
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snapshot.
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"""
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from argparse import ArgumentParser
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from datetime import datetime
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from distutils.util import strtobool
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import numpy
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from mpi4py import MPI
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try:
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import csiborgtools
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except ModuleNotFoundError:
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import sys
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sys.path.append("../")
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import csiborgtools
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comm = MPI.COMM_WORLD
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rank = comm.Get_rank()
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nproc = comm.Get_size()
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verbose = nproc == 1
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parser = ArgumentParser()
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parser.add_argument("--ics", type=int, nargs="+", default=None,
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help="IC realisations. If `-1` processes all simulations.")
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parser.add_argument("--grid", type=int, help="Grid resolution.")
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parser.add_argument("--in_rsp", type=lambda x: bool(strtobool(x)),
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help="Calculate the density field in redshift space?")
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parser.add_argument("--MAS", type=str, choices=["NGP", "CIC", "TSC", "PCS"])
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args = parser.parse_args()
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paths = csiborgtools.read.CSiBORGPaths(**csiborgtools.paths_glamdring)
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if args.ics is None or args.ics[0] == -1:
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ics = paths.get_ics(tonew=False)
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else:
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ics = args.ics
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for i in csiborgtools.fits.split_jobs(len(ics), nproc)[rank]:
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nsim = ics[i]
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print(f"{datetime.now()}: rank {rank} working on simulation {nsim}.",
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flush=True)
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nsnap = max(paths.get_snapshots(nsim))
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box = csiborgtools.read.BoxUnits(nsnap, nsim, paths)
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parts = csiborgtools.read.read_h5(paths.particles_path(nsim))["particles"]
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density_generator = csiborgtools.field.DensityField(box, args.MAS)
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rho = density_generator(parts, args.grid, in_rsp=args.in_rsp,
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verbose=verbose)
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fout = paths.density_field_path(args.MAS, nsim, args.in_rsp)
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print(f"{datetime.now()}: rank {rank} saving output to `{fout}`.")
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numpy.save(fout, rho)
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