[cig-commits] r19181 - in short/3D/PyLith/branches/v1.6-stable: . doc/releasenotes

[brad at geodynamics.org]

Author: brad
Date: 2011-11-10 16:03:11 -0800 (Thu, 10 Nov 2011)
New Revision: 19181

Modified:
   short/3D/PyLith/branches/v1.6-stable/README
   short/3D/PyLith/branches/v1.6-stable/doc/releasenotes/announce_v1.6.2.txt
Log:
Small changes to release notes.

Modified: short/3D/PyLith/branches/v1.6-stable/README
===================================================================
--- short/3D/PyLith/branches/v1.6-stable/README	2011-11-11 00:03:00 UTC (rev 19180)
+++ short/3D/PyLith/branches/v1.6-stable/README	2011-11-11 00:03:11 UTC (rev 19181)
@@ -119,12 +119,12 @@
 KNOWN ISSUES
 
   The custom line search used with the PETSc nonlinear solver (SNES)
-  has difficulty handling cases with fault opening when the fault
-  normal tractions are much larger than the fault shear tractions. The
-  direction of the line search tends to be nearly orthogonal to the
-  residual, resulting in extremely poor convergence. We plan to
-  improve the line search algorithm in a future release in order to
-  resolve this issue and improve the rate of convergence in
+  has difficulty handling loading cases. In cases where the direction
+  of the line search tends to be nearly orthogonal to the residual,
+  the rate of convergence in the SNES iterations is extremely slow. In
+  other cases the nonlinear solver gets stuck in a local minimum. We
+  plan to improve the line search algorithm in a future release in
+  order to resolve this issue and improve the rate of convergence in
   spontaneous rupture simulations.
 
 

Modified: short/3D/PyLith/branches/v1.6-stable/doc/releasenotes/announce_v1.6.2.txt
===================================================================
--- short/3D/PyLith/branches/v1.6-stable/doc/releasenotes/announce_v1.6.2.txt	2011-11-11 00:03:00 UTC (rev 19180)
+++ short/3D/PyLith/branches/v1.6-stable/doc/releasenotes/announce_v1.6.2.txt	2011-11-11 00:03:11 UTC (rev 19181)
@@ -65,10 +65,10 @@
 KNOWN ISSUES
 
   The custom line search used with the PETSc nonlinear solver (SNES)
-  has difficulty handling cases with fault opening when the fault
-  normal tractions are much larger than the fault shear tractions. The
-  direction of the line search tends to be nearly orthogonal to the
-  residual, resulting in extremely poor convergence. We plan to
-  improve the line search algorithm in a future release in order to
-  resolve this issue and improve the rate of convergence in
+  has difficulty handling loading cases. In cases where the direction
+  of the line search tends to be nearly orthogonal to the residual,
+  the rate of convergence in the SNES iterations is extremely slow. In
+  other cases the nonlinear solver gets stuck in a local minimum. We
+  plan to improve the line search algorithm in a future release in
+  order to resolve this issue and improve the rate of convergence in
   spontaneous rupture simulations.