[FLASH-USERS] read FLASH hdf5 with C++

[Nathan Hearn]

Hi Silvia,

    I have written an interface to Flash HDF5 AMR files as a C++
library called QuickFlash, which is available at

http://quickflash.sourceforge.net

It also includes a Python interface to the essential functions within
the library.  QuickFlash supports on-demand block loading with caching
and buffers, so it is fast and uses a fairly small amount of memory,
even for many-gigabyte datasets.

    I should note that, while QuickFlash can be used to easily extract
values to build a uniform mesh, there are no mesh interpolation
routines at this time.  (Currently, I am trying to develop a general
interface to allow different means of handling fine-course grid
transitions.)  The version available on the SourceForge downloads page
is a bit old, but I should have a new one with better documentation
and more features soon.

    If you have any questions, please let me know.


- Nathan


-- 
Nathan C. Hearn, Ph.D.
nhearn at ucar.edu

Project Scientist
Computational & Information Systems Laboratory
National Center for Atmospheric Research


On Tue, May 4, 2010 at 03:14, Silvia at UCSC <sverdoli at ucsc.edu> wrote:
> Hi all,
>
> I would like to read the FLASH hdf5 with a C++ program. What I need is a
> function (like the IDL loaddata.pro) able to read a single variable and put
> the data onto a uniformly gridded mesh.
> So far I have been able to read simple datasets like 'integer scalars',
> 'real scalars',.. Before I start to write my own functions to read the AMR,
> reconstruct the tree structure and merge the AMR into a uniform grid, I
> would like to be sure this is the way to go.
>
> So.. did anybody deal with this problem already? or does anybody know if
> what I need exists already?
>
> Basically, what is the best way to solve this problem?
>
> Thanks!
>
> Silvia