46 lines
1.8 KiB
ReStructuredText
46 lines
1.8 KiB
ReStructuredText
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ICGen
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Description
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-----------
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ICgen is a generator of initial condition for N-body simulations. It is based on MPI and FFTW 2. It is able to handle a theoretically unlimited number of constraints for generating constrained Gaussian random field.
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Package content
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---------------
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After unpacking the source package, you have a number of files and subdirectories unpacked in the directory ICgen-X/ (X being the current version code). There are current two subdirectories: "src" and "samples". In "src", you will find the source code of ICgen. In "samples", there are a few sample configuration files that you can look at to get familiar with the parameters.
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Building instructions
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ICgen uses an autoconf/automake architecture for building. On standard linux distribution it is usually sufficient to run:
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.. code-block:: bash
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./configure
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make
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These two commands checks the availability of a working compiler, MPI, GSL and FFTW2. In general you do not have to do anything. However, if those packages are installed in non-default locations you may have to specify extra arguments to configure, in that case please have a look at the INSTALL file.
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If everything compiles fine, you have an executable "potin_mpi" in the "src" subdirectory.
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Running ICgen
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-------------
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For running and generating initial conditions, please execute:
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.. code-block:: bash
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mpirun -np X ./potin_mpi CONFIGURATION_FILE
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with X the number of nodes on which you want to execute the generator. The format of the configuration file is detailed here.
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Documentation
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-------------
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The documentation for the configuration file is on this page.
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Download
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--------
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The current public version of ICgen is 0.1-15122009. The current private version is 0.2. The public version can be downloaded from `here <http://www2.iap.fr/users/lavaux/software/tgz/icgen-0.1-15122009.tgz>`_.
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