[Libmesh-users] memory limit with osx?

[Lorenzo B. <bot...@gm...>]

I have a problem with OSX and I know that some of you are used to it.

I can run a Navier-Stokes DG P2 code in parallel with more than two
processes but in serial I get the following error

ns-opt(2096) malloc: *** mmap(size=1644146688) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
[0]PETSC ERROR: --------------------- Error Message
------------------------------------
[0]PETSC ERROR: Out of memory. This could be due to allocating
[0]PETSC ERROR: too large an object or bleeding by not properly
[0]PETSC ERROR: destroying unneeded objects.
[0]PETSC ERROR: Memory allocated 0 Memory used by process 0
[0]PETSC ERROR: Try running with -malloc_dump or -malloc_log for info.
[0]PETSC ERROR: Memory requested 1644143684!
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 3.0.0, Patch 5, Mon Apr 13 09:15:37
CDT 2009
[0]PETSC ERROR: See docs/changes/index.html for recent updates.
[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
[0]PETSC ERROR: See docs/index.html for manual pages.
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: ./ex4-opt on a darwin9.7 named ihabia-pro.local by ihabia
Sat Jun  6 15:21:38 2009
[0]PETSC ERROR: Libraries linked from
/Users/ihabia/src2/petsc-3.0.0-p5/darwin9.7.0-c-opt/lib
[0]PETSC ERROR: Configure run at Sat May 30 15:21:07 2009
[0]PETSC ERROR: Configure options --with-debugging=0 --with-mpi=1
--download-hypre=1 --with-shared=0
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: PetscMallocAlign() line 61 in src/sys/memory/mal.c
[0]PETSC ERROR: MatSeqAIJSetPreallocation_SeqAIJ() line 2986 in
src/mat/impls/aij/seq/aij.c
[0]PETSC ERROR: MatCreateSeqAIJ() line 2863 in src/mat/impls/aij/seq/aij.c
[0]PETSC ERROR: User provided function() line 145 in
unknowndirectory/src/numerics/petsc_matrix.C
application called MPI_Abort(comm=0x84000000, 1) - process 0[unset]:
aborting job:
application called MPI_Abort(comm=0x84000000, 1) - process 0

With two processes the memory usage is almost 2GB per process and I have 12
GB installed.
If I try to run a P3 in parallel (4 processes is the max for my mac) I get
the same error.

With ulimit i get
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) 6144
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 266
virtual memory          (kbytes, -v) unlimited

It seems that there isn't a process memory limit.
Any idea? Thanks for help!

Lorenzo