[petsc-dev] [petsc4py] Broken tests for DMStag

[Patrick Sanan]

I will attempt to just fix the underlying issue here, that is allow
DMStagSetUniformCoordinates() to work for period boundary conditions with a
single rank in the corresponding dimension.

Am Mi., 12. Juni 2019 um 19:10 Uhr schrieb Patrick Sanan <
patrick.sanan at gmail.com>:

> Ah, okay, so unless something weird is going on, that probably should
> never have passed (if it's asking for periodic BCs with one rank in a given
> direction, and INSERT_VALUES, so it's not well-defined which of the
> multiple local dof mapping to a given global dof should be used). I'll try
> to reproduce and fix it and/or talk to Chris.
>
> Am Mi., 12. Juni 2019 um 18:27 Uhr schrieb Balay, Satish via petsc-dev <
> petsc-dev at mcs.anl.gov>:
>
>> On Wed, 12 Jun 2019, Lisandro Dalcin via petsc-dev wrote:
>>
>> > $ python test/runtests.py -v -i dmstag TestDMStag_2D_PXY
>> > [0 at kl-18232] Python 2.7 (/usr/local/opt/python at 2/bin/python2.7)
>> > [0 at kl-18232] PETSc 3.11.2 development (conf: 'arch-darwin-c-debug')
>> > [0 at kl-18232] petsc4py 3.11.0
>> (build/lib.macosx-10.14-x86_64-2.7/petsc4py)
>> > testCoordinates (test_dmstag.TestDMStag_2D_PXY) ... ERROR
>> > testDMDAInterface (test_dmstag.TestDMStag_2D_PXY) ... ERROR
>> > testDof (test_dmstag.TestDMStag_2D_PXY) ... ok
>> > testGetOther (test_dmstag.TestDMStag_2D_PXY) ... ok
>> > testGetVec (test_dmstag.TestDMStag_2D_PXY) ... ERROR
>> > testMigrateVec (test_dmstag.TestDMStag_2D_PXY) ... ERROR
>>
>> I get:
>>
>> ======================================================================
>> ERROR: testCoordinates (test_dmstag.TestDMStag_2D_PXY)
>> ----------------------------------------------------------------------
>> Traceback (most recent call last):
>>   File "test/test_dmstag.py", line 39, in testCoordinates
>>     self.da.setUniformCoordinates(0,1,0,1,0,1)
>>   File "PETSc/DMStag.pyx", line 255, in
>> petsc4py.PETSc.DMStag.setUniformCoordinates
>> Error: error code 56
>> [0] DMStagSetUniformCoordinates() line 1077 in
>> /home/balay/petsc.z/src/dm/impls/stag/stagutils.c
>> [0] DMStagSetUniformCoordinatesExplicit() line 1118 in
>> /home/balay/petsc.z/src/dm/impls/stag/stagutils.c
>> [0] DMStagSetUniformCoordinatesExplicit_2d() line 135 in
>> /home/balay/petsc.z/src/dm/impls/stag/stag2d.c
>> [0] DMLocalToGlobalBegin() line 2614 in
>> /home/balay/petsc.z/src/dm/interface/dm.c
>> [0] DMLocalToGlobalBegin_Stag() line 230 in
>> /home/balay/petsc.z/src/dm/impls/stag/stag.c
>> [0] No support for this operation for this object type
>> [0] Local to Global scattering with INSERT_VALUES is not supported for
>> single rank in a direction with boundary conditions (e.g. periodic)
>> inducing a non-injective local->global map. Either change the boundary
>> conditions, use a stencil width of zero, or use more than one rank in the
>> relevant direction (e.g. -stag_ranks_x 2)
>>
>> Satish
>>
>>
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