PyLith v2.1.0

This release provides a few new small features and bugfixes.

Migrating from v2.0 to v2.1

The points file for OutputSolnPoints must now contain station names as
the first column.

Release Notes

• Station names are required for output at arbitrary points
  (OutputSolnPoints) and are included in a /stations dataset in HDF5
  files.
• A progress monitor will update a text file with the progress of a
  simulation (time in the time stepping loop or the number of impulses
  completed) and given an estimate of when the simulation will be
  completed.
• Bug fixes
  • A few bugs related to creating cohesive cells for fault
    intersections have been fixed. Faults can now meet at T
    intersections provided the buried edges of the faults are
    clamped. In other words, the fault ending at the T intersection
    has a clamped edge along the intersection. The fault ending at the
    intersection must also come AFTER the through-going fault in the
    list of fault interfaces.
  • There have been two major bug fixes for Drucker-Prager plasticity,
    for both DruckerPrager3D and DruckerPragerPlaneStrain. The first fix
    was a missing initial pressure term for the plastic multiplier
    in the Drucker-Prager formulation. This affects plasticity
    calculations when initial stresses are used. The error has been
    corrected in the code, the manual, and the unit tests. The second
    bug was an incorrect test for tensile yield that could cause
    PyLith to exit with an error when plastic yield had not actually
    occurred. The error would only occur when the allow_tensile_yield
    flag was set to False. This bug has been fixed in the code, and the
    new test is also described in the manual. This should prevent
    problems that previously existed when allow_tensile_yield was set
    to False (as it should be for most quasi-static problems).
  • Fixed bug in DataWriterHDF5Ext associated with multiple processes
    writing information to the HDF5 file. With external datasets the
    HDF5 file is limited to metadata and is maintained by process 0.
  • A two-dimensional gravity example has been added, based on the
    tutorial from the June, 2014 workshop at Stanford University.
    The tutorial itself is in examples/2d/gravity, and a new section
    has also been added to the manual describing the example.
  • Fixed inconsistent fault orientation when running in parallel
    for 2-D domains.