Generating pre-initial conditions for cosmological N-body simulations with capacity constrained Voronoi tessellations

Copyright (C) 2018 Shihong Liao

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, see https://www.gnu.org/licenses/.

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Following is a quick summary to get started with using the code. Please refer to User Guide (doc/user-guide.pdf) for further details.

Downloads

You can directly download this code here, or use git to clone it:

$ git clone https://github.com/liaoshong/ccvt-preic.git

Environment requirements

To compile the program, you need an ANSI C compiler with OpenMP supported (e.g. GCC later than version 4.2).

Compile

To compile the code, type

$ make

in the command line, and normally it will generate an executable named ccvt-preic.

Run

Run the code with the below command.

$ ./ccvt-preic results/run.param

Outputs

The code outputs two files:

1. ccvt_particle_[NUM_PART_EACH_DIM]capacity[NUM_CAPACITY_EACH_DIM].txt: a text file with particles' positions.
2. gadget_particle_[NUM_PART_EACH_DIM]capacity[NUM_CAPACITY_EACH_DIM]: a file with the GADGET format (i.e., SnapFormat = 1 in GADGET's conventions). This file can be directly used by the N-GenIC or 2LPTic codes (see User Guide for details).

Contacts

Questions and bug reports can be sent to liaoshong@gmail.com. Feedbacks and comments are welcome.