[Carpet] Carpet IO oddity

[Erik Schnetter]

On May 1, 2006, at 07:29:50, Wolfgang Kastaun wrote:

> I just found a  1D .asc file where each iteration that should have  
> been
> written was actually written out twice, with the only exception of
> iteration 0.
> Also, there where a lot of HDF5 diagnstic and level 1 warnings from
> CarpetIOHDF5, which look to me like it also tries to write the data
> to .h5 twice. The .h5 files produced are fine, however.
>
> The code and parameter were the same I used before without problems.
> The only thing that was different is that some variables which I read
> in using IOUtil_RecoverVarsFromDatafiles() were chunked (4 files) on
> disk while the run was a 1 cpu run. Is it possible this caused
> the Carpet IO hickup ?

No, this is not possible.  How were the data sets duplicated -- were  
they ordered 0, 1, 2, 3, 4, 5, ..., 1, 2, 3, 4, 5, ..., or was it  
like 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, ...?  Why did the run not abort  
after encountering HDF5 errors?  Did you maybe start the simulation  
twice, so that two instances wrote output at the same time into the  
same directory?  Can you reproduce this error, or was it a one-time  
event?

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>

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