[Users] VisIt and Pugh
Roland Haas
rhaas at illinois.edu
Thu Oct 29 10:10:01 CDT 2020
Hello David,
> Has anyone use VisIt to visualize HDF5 data generated using the PUGH
> driver or does it just work with Carpet?
Unfortunately, while the file formats are almost identical, the
CarpetHDF5 plugin for VisIt can read only CarpetHDF5 output files.
The difference is (as far as I know) entirely in the HDF5 "attributes"
used to describe the actual datasets.
For example PUGHIOHDF5 will provide these attributes for a 3d grid
function dataset:
/WAVETOY::phi\ timelevel\ 1\ at\ iteration\ 0 Dataset {15/15, 15/15, 15/15}
Attribute: delta {3}
Type: native double
Data: 0.6, 0.6, 0.6
Attribute: global_size {3}
Type: native int
Data: 15, 15, 15
Attribute: groupname scalar
Type: 21-byte null-terminated ASCII string
Data: "WAVETOY::SCALAREVOLVE"
Attribute: grouptype scalar
Type: native int
Data: 402
Attribute: max_ext {3}
Type: native double
Data: 8.1, 8.1, 8.1
Attribute: min_ext {3}
Type: native double
Data: -0.3, -0.3, -0.3
Attribute: ntimelevels scalar
Type: native int
Data: 3
Attribute: origin {3}
Type: native double
Data: -0.3, -0.3, -0.3
Attribute: time scalar
Type: native double
Data: 0
while the CarpetIOHDF5 reader expects to find these ones:
cctk_nghostzones (int[3]) - number of ghost zones in each direction
delta (double[3]) - grid spacing
iorigin (int[3]) - cctk_lbnd[] (for PUGH)
level (int) - 0 (refinement level)
name (string) - variable name
origin (double[3]) - upper/front/left corner coordinate of block of data
time (double) - simulation time
timestep (int) - cctk_iteration
plus the attribute
nioprocs (int) - number of file_X files making up the data set.
in a "Parameters and Global Attributes" group.
Yours,
Roland
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