[Pw_forum] execution error on Itanium2

[Paolo Giannozzi]

On Saturday 04 March 2006 01:29, Sergey Lisenkov wrote:

>    There is a problem with PWscf code running in parallel
>    (serial version works fine) 

the stable version?

> on Itanium2 cluster, compiled with Intel8.1 compilers, mpich-gm:
>
> 1 - MPI_ALLREDUCE : Datatype is MPI_TYPE_NULL

if this is deterministic, it might be a problem with definitions like
MPI_REAL8 and MPI_DOUBLE_PRECISION that are contained in mpif.h.
You might be using an incompatible version of mpif.h, for instance.
Try to locate where this happens.

If this is erratic, it is a problem with either the compiler or the
mpi libraries or both or the interactions between the two,
whatever your system administrator says.

Paolo
-- 
Paolo Giannozzi             e-mail:  giannozz at nest.sns.it
Scuola Normale Superiore    Phone:   +39/050-509876, Fax:-563513 
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