[FLASH-USERS] FLASH VisIt Visualization - Question

[Tomasz Plewa]

Dear Sai -

400 files is a good number to begin with. This is enough to make a movie 
that will play for about 10-15 seconds.

VisIt speed is frequently limited not by the engine, but its compositing 
viewer, which is serial.

Try smaller data sets, and learn how visualization scales as the data 
size increases. I am working with 16 GB 3D plotfiles, and depending how 
complex is the plot it may take several 10 minutes to render the scene.

Good luck -

Tomek
--
On 7/11/24 17:50, Dammati, Sai Sandeep wrote:
>
> Howdy!
>
> I am a new user to FLASH. I am planning to run a 2D simulation with 
> *half a million meshblocks* with a fixed *size of 64x64x1* cells using 
> Paramesh. I plan to use FLASH’s HDF5 format for visualization in 
> VisIt. From a visualization standpoint, I want to know how many output 
> files per frame do I need to write the HDF5 output so that I can 
> comfortably visualize the simulation data in VisIt using the FLASH 
> database plugin.
>
> I have previously tried a 2D sod problem with 130760 meshblocks (of 
> fixed size 64x64 cells) and tried to write a *single output file*, 
> however, when I tried to visualize this single output file in VisIt 
> 3.3.2 using the FLASH plugin with 512 cores, the file opens but when I 
> do a simple pseudocolor of density, it just hangs and never renders 
> the plot.
>
> Can you please provide me some input on how to visualize large HDF5 
> datasets from FLASH in VisIt?
>
> Thank you very much.
>
> With Regards,
>
> Sai Sandeep Dammati, Ph.D.,
>
> Postdoctoral Research Associate,
>
> School of Mechanical, Aerospace, and Manufacturing Engineering,
>
> University of Connecticut,
>
> Storrs, CT – 06269.
>
>
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