csiborgtools/scripts/run_crossmatch.py
Richard Stiskalek 3dc559fec1
Overlap calculation (#19)
* Rm comment

* Add new fixed particle overlap

* Fix overlap calculation

* Update docs

* Add new overlapper support in matcher

* add filter optin

* Add the real space filter.

* Change filtering to real space only

* Update TODO

* add high-resolution switch

* add cross script

* Remove comment

* Add smoothing option
2022-12-27 18:32:12 +01:00

78 lines
2.7 KiB
Python

# Copyright (C) 2022 Richard Stiskalek
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""
MPI script to run the CSiBORG realisations matcher.
"""
import numpy
from datetime import datetime
from mpi4py import MPI
from os.path import join
from os import remove
try:
import csiborgtools
except ModuleNotFoundError:
import sys
sys.path.append("../")
import csiborgtools
import utils
# Get MPI things
comm = MPI.COMM_WORLD
rank = comm.Get_rank()
nproc = comm.Get_size()
# File paths
ftemp = join(utils.dumpdir, "temp_match", "match_{}.npy")
fperm = join(utils.dumpdir, "match", "cross_matches.npy")
# Set up the catalogue
paths = csiborgtools.read.CSiBORGPaths(to_new=False)
print("{}: started reading in the combined catalogue.".format(datetime.now()),
flush=True)
cat = csiborgtools.read.CombinedHaloCatalogue(
paths, min_m500=None, max_dist=None, verbose=False)
print("{}: finished reading in the combined catalogue with `{}`."
.format(datetime.now(), cat.n_sims), flush=True)
matcher = csiborgtools.match.RealisationsMatcher(cat)
for i in csiborgtools.fits.split_jobs(len(cat.n_sims), nproc)[rank]:
n = cat.n_sims[i]
print("{}: rank {} working on simulation `{}`."
.format(datetime.now(), rank, n), flush=True)
out = matcher.cross_knn_position_single(
i, nmult=15, dlogmass=2, init_dist=True, overlap=True, verbose=False,
overlapper_kwargs={"smooth_scale": 0.5})
# Dump the result
with open(ftemp.format(n), "wb") as f:
numpy.save(f, out)
comm.Barrier()
if rank == 0:
print("Collecting files...", flush=True)
dtype = {"names": ["match", "nsim"], "formats": [object, numpy.int32]}
matches = numpy.full(len(cat.n_sims), numpy.nan, dtype=dtype)
for i, n in enumerate(cat.n_sims):
with open(ftemp.format(n), "rb") as f:
matches["match"][i] = numpy.load(f, allow_pickle=True)
matches["nsim"][i] = n
remove(ftemp.format(n))
print("Saving results to `{}`.".format(fperm))
with open(fperm, "wb") as f:
numpy.save(f, matches)