DAGH - Distributed Adaptive Grid Hierarchies 
Version 0.1
October, 1995

M. Parashar & J. C. Browne
parashar@cs.utexas.edu

DAGH provides a set of C++ class libraries to support parallel
adaptive mesh refinement and parallel mutligrid.

Installation
============
DAGH depends only on MPI and needs to know where this resides on the 
machine it is being installed on. In addtion it also uses HDF (NCSA) 
& RNPL (M Choptuik et al) for IO.
Installation consists of 3 steps:

(1) Selecting the machine specific makefile This is done using the
    following command:

	configure <arch>

    where arch is one of rs6000, sp2, sgi, or crayt3d.

(2) Edit make.defn. This file consists of all the definition specific
    to the architecture. In particular the locations of MPI libraries
    must be appropriately set. If HDF and RNPL IO is used the homes 
   of these packages needs to be supplied.
     
(3) Compilation:
    - to make the main DAGH library
    	make dagh
    - to make the main DAGH IO support library with HDF and RNPL
    	make daghio
    - to make both DAGH and DAGH IO libraries
	make all

Compiling Applications
======================
In any DAGH application makefile, the variable DAGH_HOME variable to
point to the installation of DAGH. A sample makefile (Makefile.App)
is present in the utilities directory.

DAGH IO
=======
DAGH IO support enables to user to allocate specialised IO server
processors that process IO requests. User defined routines are called
to actually perform the IO. Current support includes HDF based IO using
RNPL (M. Choptuik et al) IO routines.