Viewing a large (12.5GB) HDF5 file written using h5py on HDFView 2.14
you can edit your hdfview.bat and add more memory on the switch
this is the line on .bat file:
start "HDFView" "%JAVABIN%\javaw.exe" %JAVAOPTS% -Xmx1024M -Djava.library.path="%INSTALLDIR%\lib;%INSTALLDIR%\lib\ext" -Dhdfview.root="%INSTALLDIR%" -cp "%INSTALLDIR%\lib\fits.jar;%INSTALLDIR%\lib\netcdf.jar;%INSTALLDIR%\lib\jarhdf-3.3.2.jar;%INSTALLDIR%\lib\jarhdf5-3.3.2.jar;%INSTALLDIR%\lib\slf4j-api-1.7.5.jar;%INSTALLDIR%\lib\extra\slf4j-nop-1.7.5.jar;%INSTALLDIR%\lib\HDFView.jar" hdf.view.HDFView %*
you can edit -Xmx1024M to more like: -Xmx4024M
it add more memory to java machine
I have a very large HDF5 file created using Python/ h5py. I cannot open the file on HDFView 2.14, when I try to open the file nothing happens. Any suggestions on how I can open/ view the file? It contains just 5 datasets, but each dataset has 778 million rows.. hence the problem. 
Thank you!