Since 14:45 yesterday 13 demos are failing for the 32-bits linux
buildbot. While writing this email, suddenly they worked again.
The 64-bit linux and the mac were still running the demos, until three
demos started failing for the mac as well during the night. The 64-bit
linux machine is still running the demos, but it has 32 GB of memory.
The error from the mac looks like this, indicating it might be a memory
problem:
Initializing DOLFIN version 0.7.2.
Initializing PETSc with given command-line arguments.
Saved function u (discrete function) to file cahn_hilliard.pvd in VTK
format.
Starting Newton solve.
Assembling matrix over cells (finished).
Assembling vector over cells (finished).
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
probably memory access out of range
[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
[0]PETSC ERROR: or see
http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#Signal[0]PETSC
ERROR: or try http://valgrind.org on linux or man libgmalloc on Apple to
find memory corruption errors
[0]PETSC ERROR: likely location of problem given in stack below
[0]PETSC ERROR: --------------------- Stack Frames
------------------------------------
[0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,
[0]PETSC ERROR: INSTEAD the line number of the start of the function
[0]PETSC ERROR: is given.
[0]PETSC ERROR: --------------------- Error Message
...
[Amira-iMac.local:11915] MPI_ABORT invoked on rank 0 in communicator
MPI_COMM_WORLD with errorcode 59
Bus error
The mac fails the demos
nls/cahn-hilliard/cpp
demo/nls/nonlinearpoisson/cpp
ilmar
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