[CIG-SHORT] problem with a benchmark of 250m mesh

[Brad Aagaard]

Ikuo-

The Linux binary is a 32-bit binary. In this problem the amount of memory 
required for the sparse matrix exceeds that allowed for a 32-bit program. In 
order to run a problem of this size, you will need to build a 64-bit version 
from the source code.

Regards,
Brad


On Wednesday 01 October 2008 5:12:02 pm Ikuo Cho wrote:
> Dear pylith developers:
>
> I have tried strike-slip benchmarks described in Chapter 8 in the User
> Manual. Tests for 500 m and 1000m meshes were successfully finished, but
> a test for 250 m mesh was failed.
>
> I used the pylith binary executable (pylith-1.3.0-linux-i686) and used
> the parameter files downloaded from Web Site
> http://www.geodynamics.org/svn/cig/short/3D/PyLith/benchmarks/trunk/quasist
>atic/strikeslipnog without change.
>
> I did the three tests as
> 1) pylith strikeslip_cubit.cfg strikeslip_hex8_1000m.cfg,
> 2) pylith strikeslip_cubit.cfg strikeslip_hex8_0500m.cfg,
> 3) pylith strikeslip_cubit.cfg strikeslip_hex8_0250m.cfg.
>
> Finally, Job 3) ended after creating Jacobian matrix, with PETSc errors
>
> [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 -2147483648
> [0]PETSC ERROR: Try running with -malloc_dump or -malloc_log for info.
> [0]PETSC ERROR: Memory requested 2523809244!
> ......
> RuntimeError: Could not create PETSc Matrix.
>
> However, our computer machine has enough memory with the following
> specification.
>
> OS: CentOS release 4.4 (Final)
> linux: 2.6.9-42.0.10.ELsmp x86_64
> CPU(64bit): Intel(R) Xeon(R) X5355 @ 2.66GHz  (Dual quad-core)
> Memory: DDR2-800  64GB
>
> I couldn’t find out what caused this problem and would like to ask you
> give some idea. Attachment files are the runtime logs of the above jobs.
>
> Sincerely,
>
> Ikuo Cho
>
> ----------------------------------------------------------
> Ikuo Cho  ( ikuo-chou at aist.go.jp )
> Geological Survey of Japan,
> National Institute of Advanced Industrial Science and Technology
> Tsukuba Central 7, Tsukuba 305-8567 Japan
> Tel +81-29-861-3891, Fax +81-29-861-3682
> ----------------------------------------------------------