Hi,
On środa, 6 czerwca 2007, Nathan Hearn wrote:
> From the main email thread, it looks like you are on your way to a
> solution towards the speedup issue. (I like Artur's explanation, as
> blocks are probably redistributed only during AMR refine/derefine
> steps. However, it is still unclear to me why you only occasionally
> see the speedup during restart.)
It is because redistribution takes place also after init from checkpoint.
> Unless there are some specific input files required by the
> Flash modules in use, the only files needed for restart are flash.par
> and the checkpoint file. The checkpoint file contains all the
> information necessary to reconstruct the mesh.
It is also possible to restart with checkpoint dump only (flash2 -chk_file
<checkpoint_file>). IIRC flash.par needs to be present, and could be empty.
> However, it should be possible to alter the lrefine settings in flash.par
> to force Flash to change the minimum and maximum levels of refinement after
> the checkpoint data is loaded.
If the restart is via flash.par file (restart=1, cpnumber=<some valid
number>) then all parameters from flash.par override both defaults and
values stored in checkpoint.
--
Cheers,
Artur
Received on Wed Jun 6 05:04:03 2007
This archive was generated by hypermail 2.1.8 : Wed Jun 06 2007 - 05:04:03 CDT