[Users] Chunked checkpoints with unchunked HDF5_3D output?

[Bernard Kelly]

Hi Erik.

I was originally using out3D_vars etc, but the resulting output was
always *chunked* and *cumulative* over time. I don't see a parameter
that controls this behavior in CarpetIOHDF5/param.ccl.

Bernard

On 6 January 2016 at 14:51, Erik Schnetter <schnetter at cct.lsu.edu> wrote:
> CarpetIOHDF5 has two output modes. You can either set out_vars, giving
> the traditional chunked output, or you can set out3D_vars, which uses
> a different output mechanism and slightly different file names. The
> latter may be unchunked by default. (I hope.)
>
> (There is also out1D_vars and out2D_vars.)
>
> -erik
>
> On Wed, Jan 6, 2016 at 2:39 PM, Bernard Kelly <physicsbeany at gmail.com> wrote:
>> Hi. Silly question time:
>>
>> I'd like to write some grid functions to disk as HDF5 3D files that
>> are *unchunked*, but one per output time step. This I'm doing by
>> setting the following parameters:
>>
>> IOUtil::out_mode                     = "onefile"
>> IOUtil::out_timesteps_per_file = 1
>>
>> However, an unexpected (to me) side-effect of this is that my
>> checkpoint files are now also unchunked, which leads to longer
>> recovery (and occasionally failure).
>>
>> So ... can I have chunked checkpoint files, but unchunked everything
>> else 3D using CarpetIOHDF5?
>>
>> Thanks,
>>
>> Bernard
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>
>
>
> --
> Erik Schnetter <schnetter at cct.lsu.edu>
> http://www.perimeterinstitute.ca/personal/eschnetter/