[petsc-users] VecView to hdf5 broken for large (complex) vectors

[Sajid Ali]

Hi Matt,

I tried running the same example with a smaller grid on a workstation and I
see that for a grid size of 8192x8192 (vector write dims 67108864, 2), the
output file has a chunk size of (16777215, 2).

I can’t see HDF5_INT_MAX in the spack build-log (which includes configure).
Is there a better way to look it up?

[sajid at xrmlite .spack]$ cat build.out | grep "HDF"
#define PETSC_HAVE_HDF5 1
#define PETSC_HAVE_LIBHDF5HL_FORTRAN 1
#define PETSC_HAVE_LIBHDF5 1
#define PETSC_HAVE_LIBHDF5_HL 1
#define PETSC_HAVE_LIBHDF5_FORTRAN 1
#define PETSC_HAVE_HDF5_RELEASE_VERSION 5
#define PETSC_HAVE_HDF5_MINOR_VERSION 10
#define PETSC_HAVE_HDF5_MAJOR_VERSION 1

Thank You,
Sajid Ali
Applied Physics
Northwestern University
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