dolfin team mailing list archive

[Ilmar Wilbers <ilmarw@xxxxxxxxx>]

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