[Users] making outScalar_style steerable

[Erik Schnetter]

For recovery, there is one small problem that would be difficult to avoid:

If you start a simulation in a directory that is not empty, but which
contains files e.g. from a previous simulation, then Cactus is
supposed to delete all files that it is writing before writing them.
(That is, Cactus shouldn't append to existing files, unless you
recover.) If you steer the parameter upon recovery, this check is
omitted, and Cactus appends to existing files.

For example, if you start a simulation from scratch in a directory
containing the files lapse.asc and lapse.xg, and if you are using
xgraph style, then lapse.xg will be deleted and then written. If you
change to gnuplot style upon recovery, Cactus will append to the
(existing) lapse.asc without deleting it first. This can be confusing.

What do you think, Luca? What do others think?

-erik

On Tue, Sep 21, 2010 at 5:05 PM, Baiotti Luca <baiotti at ile.osaka-u.ac.jp> wrote:
> Erik,
>
> making it steerable on recovery would be enough.
>
> Luca
>
>
> On 9/22/10 6:52 AM, Erik Schnetter wrote:
>>
>> Luca
>>
>> This parameter determines also the file name that is used to output
>> the data. When you steer the parameter, IOBasic would have to create
>> the new file. If you steer it back, it probably should append to the
>> existing, old file. It would probably also need to indicate that the
>> output has been distributed over several files, so that people are not
>> surprised by "missing" data.
>>
>> I could be convinced to make it steerable upon recovery, but making it
>> generally steerable seems to create a lot of complications. When would
>> this feature be convenient for you?
>>
>> -erik
>>
>> On Tue, Sep 21, 2010 at 4:45 PM, Baiotti Luca<baiotti at ile.osaka-u.ac.jp>
>>  wrote:
>>>
>>> Hello,
>>>
>>> could the IOBasic parameter:
>>>
>>> KEYWORD outScalar_style "Which style for Scalar output"
>>> {
>>>   "gnuplot" :: "1D output readable by gnuplot"
>>>   "xgraph"  :: "1D output readable by xgraph"
>>> } "xgraph"
>>>
>>> be made steerable?
>>>
>>>
>>> Luca
>>> _______________________________________________
>>> Users mailing list
>>> Users at einsteintoolkit.org
>>> http://lists.einsteintoolkit.org/mailman/listinfo/users
>>>
>>
>>
>>
>



-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/