[Libmesh-devel] Could not open source file "derived_rb_construction.h"

2011-12-15 Thread Vikram Garg
Hey, I svn up'd just now and ran into this error during compilation. Compiling C++ (in debug mode) src/reduced_basis/derived_rb_construction.C... src/reduced_basis/derived_rb_construction.C(20): catastrophic error: could not open source file "derived_rb_construction.h" #include "derived_r

Re: [Libmesh-devel] Regression in reduced_basis_ex4

2011-12-15 Thread Cody Permann
Random number generation has caused us many issues in MOOSE as well. Long ago we bundled in a free platform independent random number generator which resolved all of these issues. I don't know if we'd want to go those extremes in the libMesh library but it has worked well for us. Cody Sent from

Re: [Libmesh-devel] Regression in reduced_basis_ex4

2011-12-15 Thread Roy Stogner
On Thu, 15 Dec 2011, John Peterson wrote: > On Thu, Dec 15, 2011 at 7:35 AM, Roy Stogner wrote: >> >> but I've no idea what causes the difference. > > Hmm... just a thought: the RB stuff uses some random number generation stuff. > > Perhaps this could explain different greedy parameter selectio

Re: [Libmesh-devel] Regression in reduced_basis_ex4

2011-12-15 Thread David Knezevic
John's right that there are random numbers in general, but in that example the training sets are not randomly generated. But the way the algorithm chooses the next parameter is by finding the one with the maximum error bound, and as you can see this problem has the same error bound at two diffe

Re: [Libmesh-devel] Regression in reduced_basis_ex4

2011-12-15 Thread John Peterson
On Thu, Dec 15, 2011 at 7:35 AM, Roy Stogner wrote: > > but I've no idea what causes the difference. Hmm... just a thought: the RB stuff uses some random number generation stuff. Perhaps this could explain different greedy parameter selection order on different systems, but not outright failure?

Re: [Libmesh-devel] Regression in reduced_basis_ex4

2011-12-15 Thread Roy Stogner
I can't seem to reproduce it easily, myself! BuildBot is showing a failure every time with my default build: loadmodules intel tbb mpich2/1.2.1 mkl-pecos petsc slepc trilinos glpk vtk &&./configure --enable-everything but it's showing success with literally every other build I've configured it

Re: [Libmesh-devel] Regression in reduced_basis_ex4

2011-12-15 Thread David Knezevic
hmm, I can't seem to reproduce this error...? On 12/14/2011 10:38 PM, Roy Stogner wrote: > > We're hitting this with my plain standard --enable-everything build, > too: > > ... > > Basis dimension: 19 > Performing RB solves on training set > Maximum (absolute) error bound is 0.199127 >