[Pw_forum] White space error

james raynolds jamesraynolds at yahoo.com
Thu Mar 23 15:59:46 CET 2006


Axel,

Excellent!  Thanks.  I will try it.

Jim

--- Axel Kohlmeyer <akohlmey at vitae.cmm.upenn.edu>
wrote:

> On Thu, 23 Mar 2006, james raynolds wrote:
> 
> JR> Dear users,
> JR> 
> JR> I'm trying to compile pwscf on an AIX machine
> with
> JR> xlf90.  It compiles with no errors but gives a
> runtime
> JR> error of "illegal instruction".  Using dbx I
> find that
> JR> the error is due to white space in lexical
> JR> expressions.
> 
> james, 
> this may only be a symptom, e.g. the compiler
> assumes
> different semantics and then the linker pics up
> a different library (or not).
> 
> 'illegal instruction' happens, if you compile for a
> different instruction set, e.g. for power5 on a
> power4
> machine, or you are linking the wrong platform
> specific
> libraries. please compare the flags in your make.sys
> file 
> with the hardware you are running on...
> 
> regards,
>     axel.
> 
> JR> 
> JR> For example: calling the function f(x) like
> JR> 
> JR> f (x) 
> JR> 
> JR> with a space between f and (x) gives rise to the
> JR> error.  If I take out the space and call it like
> JR> 
> JR> f(x) 
> JR> 
> JR> the error goes away.  The problem is, there are
> so
> JR> many places where this happens that it is
> impossible
> JR> to take out all of the spaces.  Doing a grep on
> the
> JR> string ' ('  in the PW directory gives like 9000
> JR> places where this happens.
> JR> 
> JR> Does anyone know a work around??  Any help would
> be
> JR> greatly appreciated.  Thank you in advance...
> JR> 
> JR> Sincerely,
> JR> James E. Raynolds
> JR> Assistant Professor
> JR> College of Nanoscale Science and Engineering
> JR> University at Albany, State University of NY
> JR> Albany, NY USA
> JR> 
> JR>
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> 
> -- 
>
=======================================================================
> Dr. Axel Kohlmeyer akohlmey at cmm.chem.upenn.edu
> http://www.cmm.upenn.edu
> Associate Director - Center for Molecular Modeling -
> U. 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
>
=======================================================================
> If you make something idiot-proof, the universe
> creates a better idiot.
> 
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