Dear Forum Members,

please let me enhance the provided information:

1. I am using HdfView-2.14.0.

2. This is the questionable data set.

[cid:[email protected]]


3. These are the data set properties.

[cid:[email protected]]

Can someone provide information about possible steps in order to track the 
problem further down?

Thanks and kind regards,
Daniel

Am 29.01.2018 um 00:06 schrieb Daniel Rimmelspacher:

Dear Forum Members,

I am trying to store application data in a compound dataset (via Matlab
low-level API). The dataset looks like this:

Column1:

          type1 = H5T.vlen_create('H5T_NATIVE_DOUBLE')

Column2:

        type2= H5T.copy('H5T_C_S1')

        H5T.set_size(type2, 'H5T_VARIABLE')

In order to try out the performance, I varied the length of type 1, i.e.
storing 10/100/1000/10000 doubles in 10000 rows. Storing though seems
pretty fast, but when I try to open the data set with the HDF Viewer I
encounter significant performance issues for 10000 values. I already
tried to vary the chunking parameter (1/10/100/1000) but without success.

Is this an issue with the HDF viewer or rather a problem with my data
model? Is there a trick in order to enhance dataset loading performance
inside the viewer?

Any hint is appreciated!

Thanks,

Daniel







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