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BEAR(id, np)

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Description

BEAR is the main processing subroutine of the BearCLAW software. Its functionality can be divided into four major categories:

1. Load program data from BearData and bear.rundata files.

2. Set up a new problem.

3. Load the tree data from a previously-run simulation, starting at a specific frame.

4. Run the calculations needed to solve a problem.

The general structure of BEAR is as follows:

<Declare Variables>
<Load data from files>

If <Restart> Then
     <Load forest data from previous simulation>

Else
     <Create new forest structure>
     <Set up problem data>
End If

<Run calculations>
<Release system resources and exit>

INCLUDES:

• rundata.f90 supplies a number of variables that are read in from files.

USES:

• nodeinfodef.f90 supplies the NodeInfo data structure and some functions that operate on it.
• treeops.f90 supplies the Node and Forest structures and accompanying methods, as well as the ApplyOn_ functions.
• mpi_exec.f90 supplies functions used to set up distributed processing (most of which tend to have MPI_ somewhere in the name).
• serial_exec.f90 supplies functions used for single-processor processing.
• beario.f90 provides some file IO functions.
• scheme module supplies time-stepping scheme.
• contrib/astro/problem.f90 Contains problem-specific variables and functions.