We're looking into the possibility that it's a bad node in our cluster.
Here's another core dump from a different place:
Program terminated with signal 7, Bus error.
#0 libMesh::Quad::n_vertices (this=0x2aabc0c0bcc0) at
./include/libmesh/face_quad.h:80
80 unsigned int n_vertices() const { return 4; }
(gdb) where
#0 libMesh::Quad::n_vertices (this=0x2aabc0c0bcc0) at
./include/libmesh/face_quad.h:80
#1 0x00002ab19fe62334 in libMesh::Elem::hmax (this=0x2aabc0c0bcc0) at
src/geom/elem.C:367
#2 0x00002ab19fc4ca5b in
libMesh::KellyErrorEstimator::internal_side_integration
(this=0x2aabc04eb160) at src/error_estimation/kelly_error_estimator.C:93
#3 0x00002ab19fc49730 in libMesh::JumpErrorEstimator::estimate_error
(this=0x2aabc04eb160, system=..., error_per_cell=..., solution_vector=0x0,
estimate_parent_error=false) at src/error_
Notice that it's always a signal 7, Bus error..... how could "return 4"
ever not work?
Derek
On Fri, Apr 19, 2013 at 11:13 AM, Roy Stogner <[email protected]>wrote:
>
> On Fri, 19 Apr 2013, Derek Gaston wrote:
>
> Well - it's making it past that point now... well past it. This is
>> something different... and not very repeatable...
>>
>
> I was just about to lament that this kind of "stray pointer" error is
> the worst that C/C++ have to offer, and is the same kind of error that
> let me to eventually completely give up on my first big project when I
> was learning C in high school.
>
> But no, you don't just have an old-fashioned stray pointer error, you
> have a new-fangled nondeterministic stray pointer error thanks to a
> parallel race condition.
>
> Technology is advancing! :-P
> ---
> Roy
>
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