[Nek5000-users] makenek, sun complier & mpi

[nek5000-users at lists.mcs.anl.gov]

Ok I think what happens is the following:

We need to detect which compilers are used by the MPI-wrappers. Depending on the MPI implementation there are some flags (e.g. -showme / -show) you can use to figure that out.

MPICH doesn't know the flag -showme hence it is passed to the compiler (in your case sunf95).
The sun compiler says this is an unknown flag and returns a ZERO exit code. 
This is weird if not to say wrong because you would assume that the right exit code should be NON-ZERO in this case!

It looks like only the SUN compiler behaves wrong in this situation.
Unfortunately I don't have access to machine with MPICH/SUN so I cannot test my hypothesis.

Stefan


On Apr 21, 2010, at 2:00 PM, nek5000-users at lists.mcs.anl.gov wrote:

> What MPI implementation are you using?
> 
> Stefan
> 
> 
> On Apr 21, 2010, at 1:58 PM, nek5000-users at lists.mcs.anl.gov wrote:
> 
>> Hello all,
>> 
>> I am seeing the following error message when I use an mpif77 and mpicc
>> that use the Sun compilers.  Everything is fine if in makenek F77=sunf95
>> and CC=suncc (and IFMPI="false"), or if using mpif77 and mpicc that use
>> the Intel compilers.
>> 
>> Cheers,
>> Frank
>> 
>> 
>> sunf95: Warning: Option -showme passed to ld, if ld is invoked, ignored
>> otherwise
>> Usage: sunf95 [ options ] files.  Use 'sunf95 -flags' for details
>> WARNING: Cannot detect compiler specfic flags
>>     echo  - to promote REAL to 8 bytes
>>     echo  - to invoke preprocessor first
>> Please edit the makefile and specify the requested compiler flags in the
>> P variable!
>> 
>> -- 
>> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
>> Technische Universität Wien (Technical University of Vienna)
>> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
>> Mechanics and Heat Transfer)
>> Resselgasse 3
>> 1040 Wien
>> Tel: +4315880132232
>> Fax: +4315880132299 
>> Cell:+436765203470
>> fmuldoo (skype)
>> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
>> 
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