[aspect-devel] Error in moving temporary files during output

[Thomas Geenen]

he Rene,

what is the status of getting dealii to compile with the cray compiler?
last year we still needed a pre-release of the compiler to get it to work
its possible to build with shared libraries as well (gcc)
let me know if you need help with setting that up.
the instructions are for the pre cmake migration so i will have to do a
quick check to adapt the hacks to the new build system.

cheers
Thomas


On Mon, Jan 13, 2014 at 6:05 PM, Rene Gassmoeller <rengas at gfz-potsdam.de>wrote:

> Dear all,
> I have a follow up question on the Input/Output issue Wolfgang had. I am
> currently doing scaling tests on a Cray XC30 up to 4000 cores and
> getting the same error messages. I am writing in a designated $WORK
> directory that is intended for data output, however there is also a fast
> local $TMPDIR directory on each compute node.
> I guess my question is: Is the Number of grouped files = 1 parameter
> always useful in case of a large parallel computation and an existent
> MPI I/O system or is this cluster specific (in that case I will just
> contact the system administrators for help)?
>
> Another thing I would like to mention is that this system only allows
> for static linking. With my limited knowledge I was only able to compile
> ASPECT by commenting out the option to dynamically load external
> libraries by user input. Could somebody who introduced the possibility
> to dynamically load libraries at runtime comment on the work to make
> this a switch at compile-time? I dont know much about this, otherwise I
> would search for a solution myself. In case this creates a longer
> discussion I will open up a new thread on the mailing list.
>
> Thanks for comments and suggestions,
> Rene
>
> On 10/14/2013 05:02 PM, Wolfgang Bangerth wrote:
> > On 10/11/2013 01:32 PM, Timo Heister wrote:
> >>> I'm running this big computation and I'm getting these errors:
> >>
> >> For a large parallel computation I would use MPI I/O using
> >>      set Number of grouped files       = 1
> >
> > Good point. I had forgotten about this flag.
> >
> >>
> >>> ***** ERROR: could not move /tmp/tmp.gDzuQS to
> >>> output/solution-00001.0007.vtu *****
> >>
> >> Is this on brazos? Are you writing/moving into your slow NFS ~/? I got
> >> several GB/s writing with MPI I/O to the parallel filesystem (was it
> >> called data or fdata?).
> >
> > Yes. I was just writing to something under $HOME. Maybe not very smart...
> >
> >
> >> retry and otherwise abort the computation I would say.
> >
> > OK, that's what I'm doing now. It shouldn't just fail any more now.
> >
> > Best
> >  W.
> >
> >
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