[Octopus-users] Segmentation fault(contd)

Xavier Andrade xavier at tddft.org
Wed Nov 30 12:40:43 WET 2005


Have you tried to erase the old restart files ( rm -r tmp/ ) before doing
the new run with different spacing? In my experience, sometimes octopus gets
confused with that.

Xavier


On Wed, 30 Nov 2005, A Sen wrote:

> Dear Roberto and Giacomo,
>                         Even after typing "ulimit -s unlimited",the
> following problem (while reducing the mesh
> spacing):
>
> [1]  + Segmentation fault            octopus > out (core dumped)
>
> still persists.
>
> Ours is a 64-bit Itanium architecture on a Redhat Enterprise Linux
> platform with Intel compilers.
>
> Following are the various sizes in our set-up:
>
> core file size        (blocks, -c) unlimited
> data seg size         (kbytes, -d) unlimited
> file size             (blocks, -f) unlimited
> max locked memory     (kbytes, -l) 16
> max memory size       (kbytes, -m) unlimited
> open files                    (-n) 1024
> pipe size          (512 bytes, -p) 8
> stack size            (kbytes, -s) unlimited
> cpu time             (seconds, -t) unlimited
> max user processes            (-u) 16339
> virtual memory        (kbytes, -v) unlimited
>
> Should I relax any/some of these? If so, could you please suggest me what
> to type in the command line?
>
> Since ours is Intel compiler based Itanium64, I even failed to configure
> valgrind 3.1.0.in it. Perhaps valgrind does not work here.I therefore
> could not see whether some leaks and/or uses of unallocated memory are
> there or not.
>
> I carried out similar calculations for C6H6, but succeeded again only with
> the mesh spacing of 0.4 (and certainly not with 0.22 as given in the
> manual,which shows again "core dumped").
>
> I would be extremely grateful if you kindly suggest me what to do next
> with our limited resources.
>
> Bye,
> Arijit
>
>
>
>
>
>
>
>
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