[MOAB-dev] Creation of parallel tags

[Jed Brown]

It looks like these don't get created by default any more?  At least,
some code is failing due to lack of the parallel status and related
tags.  Do I need a different magic string, or to somehow tell MOAB that
they need to be created?  Looking at some iMeshP implementation, it
looks like a tag with the magic name is just being created?  I tried
that, but then I get traces like this.

[brakk:25133] *** Process received signal ***
[brakk:25133] Signal: Segmentation fault (11)
[brakk:25133] Signal code: Address not mapped (1)
[brakk:25133] Failing at address: 0x20
[brakk:25133] [ 0] /lib/libpthread.so.0 [0x7f8a6f224920]
[brakk:25133] [ 1] /home/jed/usr/lib/libMOAB.so.0(_ZNK19TypeSequenceManager12get_entitiesER7MBRange+0x4a) [0x7f8a6eaec3d0]
[brakk:25133] [ 2] /home/jed/usr/lib/libMOAB.so.0(_ZNK15SequenceManager12get_entitiesE12MBEntityTypeR7MBRange+0x3d) [0x7f8a6eaec487]
[brakk:25133] [ 3] /home/jed/usr/lib/libMOAB.so.0(_ZNK6MBCore20get_entities_by_typeEm12MBEntityTypeR7MBRangeb+0xbd) [0x7f8a6eae64dd]
[brakk:25133] [ 4] /home/jed/usr/lib/libMOAB.so.0(_ZNK6MBCore28get_entities_by_type_and_tagEm12MBEntityTypePKPPvPKPKviR7MBRangeib+0x87) [0x7f8a6eae626f]
[brakk:25133] [ 5] /home/jed/usr/lib/libiMesh.so.0(imesh_getentsbytagsrec_+0x333) [0x7f8a70ce4e92]
[brakk:25133] [ 6] ./ptest(main+0x1e19) [0x40e7d9]
[brakk:25133] [ 7] /lib/libc.so.6(__libc_start_main+0xe6) [0x7f8a6eee0546]
[brakk:25133] [ 8] ./ptest [0x40b209]
[brakk:25133] *** End of error message ***


What is the state of iMeshP?  I know Jason has implemented a fair
amount, but is it ready for use?  It seems unnecessarily complex (a fair
bit of the functionality is set intersection in serial) and since (as
far as I know) nobody is yet developing code against it, possibly
subject to major change.  If there is some confidence that at least the
philosophy is stable (even though some details of the API are likely to
change), then I don't mind using it.

Jed
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