[Pw_forum] problem with parallel calculation

[Axel Kohlmeyer]

On Sun, 8 Jul 2007, Ezad Shojaee wrote:

ES> 
ES> Hi

ES> trying to calculate phonon for a grid in the parallel mode, i have
ES> this error message in the second point:

ES> MPI_Recv: message truncated (rank 0, comm 9)Rank (0,
ES> MPI_COMM_WORLD): Call stack within LAM:Rank (0, MPI_COMM_WORLD):  -
ES> MPI_Recv()Rank (0, MPI_COMM_WORLD):  - main()

ES> how can i fix this?

hi ezad,

i don't know the phonon code much, but from this  little 
piece of information, probably nobody can tell what is wrong.

this error message comes from the underlying MPI library, so 
please let us first know, whether you can run any MPI program
successfully. if yes, please follow the usual advice for bug/problem
reports with any software, i.e., provide some of the text leading 
up to this and afterwards, if any (so that people can locate where 
it crashes in the code), what type and version of machine/operating 
system/compiler/MPI/quantum espresso you are using and ideally 
also the input. since your report is about a parallel execution,
please indicate, whether your input would run in serial, as sometimes
errors in the input can show up as MPI errors.

cheers,
   axel.
 

ES> thanx
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-- 
=======================================================================
Axel Kohlmeyer   akohlmey at cmm.chem.upenn.edu   http://www.cmm.upenn.edu
   Center for Molecular Modeling   --   University of Pennsylvania
Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323
tel: 1-215-898-1582,  fax: 1-215-573-6233,  office-tel: 1-215-898-5425
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If you make something idiot-proof, the universe creates a better idiot.