Transient extrusion demo gets different cell volumes after PETSc update

In #236 , we updated to PETSc v3.17.3 and observed a change in the output for the transient DM extrusion demo (transient-snes-mpfaof90-dmplex-extrude). From the regression test log:

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transient-snes-mpfaof90-dmplex-extrude...
    cd /home/jeff/projects/pnnl/TDycore/demo/transient
    /home/jeff/projects/pnnl/TDycore/demo/transient/transient_snes_mpfaof90 -ma
    # transient-snes-mpfaof90-dmplex-extrude : run time : 1.20 seconds
    diff transient-snes-mpfaof90-dmplex-extrude.regression.gold transient-snes-
    FAIL: Liquid Pressure:Max : 0.05165348704928539 > 1e-12 [relative]
    FAIL: Liquid Pressure:Min : 0.0012106965185768362 > 1e-12 [relative]
    FAIL: Liquid Pressure:Mean : 0.016393590416747494 > 1e-12 [relative]
    FAIL: Liquid Pressure:0 : 0.0012106967574871913 > 1e-12 [relative]
    FAIL: Liquid Pressure:2 : 0.031121615192353066 > 1e-12 [relative]
    FAIL: Liquid Pressure:4 : 0.010385206661480422 > 1e-12 [relative]
    FAIL: Liquid Pressure:6 : 0.0012106966381568152 > 1e-12 [relative]
    FAIL: Liquid Pressure:8 : 0.03112161384536345 > 1e-12 [relative]
    FAIL: Liquid Pressure:10 : 0.010385206661422118 > 1e-12 [relative]
    FAIL: Liquid Pressure:12 : 0.0035453382620971004 > 1e-12 [relative]
    FAIL: Liquid Pressure:14 : 0.05165348704928539 > 1e-12 [relative]
    FAIL: Liquid Pressure:16 : 0.010385205777137793 > 1e-12 [relative]
    FAIL: Liquid Pressure:18 : 0.001210696637877151 > 1e-12 [relative]
transient-snes-mpfaof90-dmplex-extrude... failed.
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@bishtgautam wrote:

@knepley For the -dm_plex_extrude_normal being used in the TRANSIENT test, I'm getting differences in cell volume between v3.16.2 and v3.17.2. Is the difference in cell volumes between the two versions of PETSc expected?

TDycores-Project / TDycore

Transient extrusion demo gets different cell volumes after PETSc update #238