[ESPResSo-devel] [bug #37281] cannot read blockfile with mpirun

[Martin Linden]

URL:
  <http://savannah.nongnu.org/bugs/?37281>

                 Summary: cannot read blockfile with mpirun
                 Project: ESPResSo
            Submitted by: bmelinden_dbb
            Submitted on: Thu 06 Sep 2012 09:18:34 AM GMT
                Category: Simulation core
                Severity: 3 - Normal
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.1.0
           Fixed Release: None

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Details:

I have trouble reading in blockfiles when using mpi. 
I would say this is a pretty serious problem, because it means that I can only
restart crashed simulations on a single processor.

The attached script and gzip archive demonstrates the problem. Without MPI,
Espresso reads the block file and starts integrating:

$ Espresso blockread.tcl

With mpi, the fine is somehow not opened, or not recognized:

$ mpirun -n 4 Espresso blockread.tcl

(...)

can not find channel named "file14"
    while executing
"blockfile $in read auto"
    invoked from within
"while { [blockfile $in read auto] != "eof" } {}"
    (file "blockread.tcl" line 6)
--------------------------------------------------------------------------
mpirun noticed that the job aborted, but has no info as to the process
that caused that situation.
--------------------------------------------------------------------------

The block file in question was in fact created using mpi, so writing blocks
seems to work.

System and version:
ubuntu 12-04 64 bit, espresso 3.1.0, code_info: { Compilation status { FFTW }
{ BOND_ANGLE_HARMONIC } { LENNARD_JONES } { LJCOS } { LJCOS2 } { EXCLUSIONS }
}

Best,

Martin Lindén, Stockholm University




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File Attachments:


-------------------------------------------------------
Date: Thu 06 Sep 2012 09:18:34 AM GMT  Name: blockread.tcl  Size: 1kB   By:
bmelinden_dbb

<http://savannah.nongnu.org/bugs/download.php?file_id=26486>
-------------------------------------------------------
Date: Thu 06 Sep 2012 09:18:34 AM GMT  Name: checkpoint.gz  Size: 170kB   By:
bmelinden_dbb

<http://savannah.nongnu.org/bugs/download.php?file_id=26487>

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