[Users] questions on CarpetIOASCII

[Luca Baiotti]

I have opened TRAC request.

Luca


On 11/10/11 1:54 AM, Erik Schnetter wrote:
> On Sun, Oct 9, 2011 at 7:39 PM, Luca Baiotti<baiotti at ile.osaka-u.ac.jp>  wrote:
>> Hello,
>>
>> I was looking into the param.ccl of CarpetIOASCII (hg version) and found
>> some deprecated parameters:
>>
>> BOOLEAN out3D_ghosts "Output ghost zones (DEPRECATED)"
>> {
>> } "yes"
>>
>>
>> BOOLEAN out3D_outer_ghosts "Output outer boundary zones (assuming that
>> there are nghostzones boundary points (DEPRECATED)"
>> {
>> } "yes"
>>
>> In what sense are they deprecated? I don't do 3D ASCII output, but I
>> think that setting the above parameters to "no" would be better (see
>> also below).
>
> These are deprecated because they do not calculate the number of ghost
> zones correctly; they make some assumptions that hold in many cases,
> but may either output ghost zones or not output real grid points in
> some cases.
>
>> Furthermore,
>>
>> BOOLEAN out1D_d "Do output along the diagonal" STEERABLE = ALWAYS
>> {
>> } "yes"
>>
>> should also default to no, I suggest.
>>
>>
>> Finally, I would also make the default of:
>>
>> BOOLEAN output_ghost_points "Output ghost points"
>> {
>> } "yes"
>>
>> to "no". This would also make the script
>> CarpetIOASCII/src/util/Carpet2ygraph.pl
>> work again (see other message about Carpet2ygraph.pl in this mailing list).
>> Except for debugging, is there any advantage in outputting ghost zones?
>
> That is correct, one only wants to look at ghost zones for debugging.
> Do you want to open a TRAC request, or suggest this again after the
> release? Carpet is now certainly mature enough so that debugging
> output does not need to be the default any more.
>
> -erik
>

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