[Users] Possible Carpet issue with Maxwell version of ET

Erik Schnetter schnetter at cct.lsu.edu
Tue Dec 13 08:34:30 CST 2011


Yosef

Could you also send us the parameter file you used as well as the
interface.ccl file declaring this variable? Maybe you want to attach this
to a bug report in trac, so that all the information is in one place.

-erik

On Mon, Dec 12, 2011 at 5:49 PM, Yosef Zlochower <yosef at astro.rit.edu>wrote:

> On 12/12/2011 01:21 PM, Erik Schnetter wrote:
>
>> prolongation='none' is one of the possibilities; there are other
>> prolongation types, e.g. sync, restrict, or copy.
>>
>> To find out what is going on, we need to find out which thorn called on
>> Carpet to interpolate in time for what reason. A stack backtrace or
>> similar information would be useful.
>>
>> -erik
>>
>
>
> Here is the backtrace
>
> Backtrace from rank 1 pid 32125:
> 1. /lib64/tls/libc.so.6 [0x2a97164300]
> 2. gdata::find_source_timelevel(**std::vector<double,
> std::allocator<double> > const&, double, int, operator_type, int&,
> int&)(./cactus_lazev)
> 3. gdata::transfer_from(comm_**state&, std::vector<gdata const*,
> std::allocator<gdata const*> > const&, std::vector<double,
> std::allocator<double> > const&, bbox<int, 3> const&, bbox<int, 3> const&,
> int, int, double, int, int)(./cactus_lazev)
> 4. ggf::transfer_from_all(comm_**state&, int, int, int,
> std::vector<sendrecv_**pseudoregion_t, std::allocator<sendrecv_**pseudoregion_t>
> > const dh::fast_dboxes::*, std::vector<int, std::allocator<int> > const&,
> int, int, double const&, bool, bool)(./cactus_lazev)
> 5. ggf::recompose_fill(comm_**state&, int, bool)(./cactus_lazev)
> 6. dh::recompose(int, bool)(./cactus_lazev)
> 7. gh::recompose(int, bool)(./cactus_lazev)
> 8. Carpet::Recompose(_cGH const*, int, bool)(./cactus_lazev)
> 9. ./cactus_lazev [0x10c01c5]
> a. Carpet::Evolve(tFleshConfig*)(**./cactus_lazev)
> b. ./cactus_lazev(main+0x9f) [0x4eb0cf]
> c. /lib64/tls/libc.so.6(__libc_**start_main+0xdb) [0x2a9715
>
>
>  On Mon, Dec 12, 2011 at 12:45 PM, Yosef Zlochower <yosef at astro.rit.edu
>> <mailto:yosef at astro.rit.edu>> wrote:
>>
>>    On 12/12/2011 12:11 PM, Erik Schnetter wrote:
>>
>>        Other causes for a timer interpolation may be a spatial
>>        interpolation at
>>        a time where the coarse grid does not exist, or a reduction
>>        operation at
>>        such a time (e.g. for scalar output).
>>
>>
>>    I haven't declared it with prolongation=none, but I never interpolate
>>    it, reduce it, or sync it.
>>
>>
>>        How do you declare this variable? You may need to explicitly
>>        tell Carpet
>>        to leave this variable alone, or to report an error when such an
>>        operation is attempted.
>>
>>    How do I do this?
>>
>>        -erik
>>
>>        On Mon, Dec 12, 2011 at 11:35 AM, Frank Loeffler
>>        <knarf at cct.lsu.edu <mailto:knarf at cct.lsu.edu>
>>        <mailto:knarf at cct.lsu.edu <mailto:knarf at cct.lsu.edu>>> wrote:
>>
>>            On Mon, Dec 12, 2011 at 10:32:55AM -0500, Yosef Zlochower
>> wrote:
>>         >    -> Internal error: extrapolation in time.
>>          variable=LAZEV::dotalp
>>         > time=118.90625  times=[118.9375]
>>         >
>>         > I am unsure how the times could have gotten out of sync at such
>> a
>>            late
>>         > time in the simulation without getting out of sync earlier. I
>>        also
>>         > do not understand why a time interpolation should have been
>>        attempted
>>         > in the first place. I don't sync or attempt to interpolate
>>        this GF.
>>
>>            Do you regrid at that time? It might happen that in order to
>>        regrid at
>>            that particular time Carpet would need to interpolate in
>>        time, and it
>>            didn't do before because levels might have been lined up at
>>        the time of
>>            regridding.
>>
>>            Frank
>>
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>>
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>>
>>
>>        --
>>        Erik Schnetter <schnetter at cct.lsu.edu
>>        <mailto:schnetter at cct.lsu.edu> <mailto:schnetter at cct.lsu.edu
>>        <mailto:schnetter at cct.lsu.edu>**>__>
>>        http://www.cct.lsu.edu/~__**eschnett/<http://www.cct.lsu.edu/~__eschnett/>
>>
>>        <http://www.cct.lsu.edu/~**eschnett/<http://www.cct.lsu.edu/~eschnett/>
>> >
>>
>>
>>
>>    --
>>    Dr. Yosef Zlochower
>>    Center for Computational Relativity and Gravitation
>>    Assistant Professor
>>    School of Mathematical Sciences
>>    Rochester Institute of Technology
>>    85 Lomb Memorial Drive
>>    Rochester, NY 14623
>>
>>    Office:74-2067
>>    Phone: +1 585-475-6103 <tel:%2B1%20585-475-6103>
>>
>>    yosef at astro.rit.edu <mailto:yosef at astro.rit.edu>
>>
>>
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>>
>>
>>
>> --
>> Erik Schnetter <schnetter at cct.lsu.edu <mailto:schnetter at cct.lsu.edu>**>
>> http://www.cct.lsu.edu/~**eschnett/ <http://www.cct.lsu.edu/~eschnett/>
>>
>>
>
> --
> Dr. Yosef Zlochower
> Center for Computational Relativity and Gravitation
> Assistant Professor
> School of Mathematical Sciences
> Rochester Institute of Technology
> 85 Lomb Memorial Drive
> Rochester, NY 14623
>
> Office:74-2067
> Phone: +1 585-475-6103
>
> yosef at astro.rit.edu
>
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> Any review, retransmission, dissemination or other use of, or taking
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-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/
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