[Nek5000-users] nek on new setup (fwd)

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

Hi Mike,

I'm fwd'g to the nek5000 users list (are you on this?).

I think Aleks can answer the question about axisymmetry +
meridional velocity.

Paul


---------- Forwarded message ----------
Date: Fri, 11 Jun 2010 09:02:02 -0700
From: Michael Sprague <msprague at ucmerced.edu>
To: Paul Fischer <fischer at mcs.anl.gov>
Subject: Re: nek on new setup

Paul,

Those are both helpful comments regarding makenek.inc.  Both are due to early 
misconfigured mpicc/mpif77.  I'm now using the distributed makenek.inc and have 
changed lelt.  Compilation seems to go fine.

Unfortunately, I'm still seeing the same problem.  I'm confident the problem is 
in our system.  I'll keep working with our cluster-guy to try and figure out 
the problem.

On an unrelated note, is there anything special that needs to be done for a 2D 
axisymmetric problem where temperature is used to represent the meridional 
velocity?  In the old version, I made a manual change to one of the .f 
routines.  I'm guess that is all "automated" in the present version, but I 
wanted to make sure.

Thanks.
--Mike




On Jun 11, 2010, at 1:03 AM, Paul Fischer wrote:

> 
> Hi Mike,
> 
> One think I noticed is that you had lelt=1000 in your SIZE
> file, which is rather large for 3D.
> 
> I would guess that the executable was then looking for about
> 2GB memory/core -- do you have that much memory per core?
> 
> In my case I reduced it to 130, implying minimum number
> of processors = 8.
> 
> Paul
> 
> 
> 
> On Thu, 10 Jun 2010, Michael Sprague wrote:
> 
>> Paul,
>> 
>> Great! I appreciate it!    The files are in the attached zip file; I also 
>> included the file 901.out, which is the output from my last run which 
>> choked.
>> 
>> I'm using mpif77/mpicc built from pgf77/pgcc; the makenek.inc gave me a 
>> little guff in that it said it couldn't detecet a compiler, so I specified 
>> the flags in P and switched NOCOMPILE as shown below:
>> 
>> *)  echo "ERROR: Unable to detect compiler!"
>>   echo "        - don't know how to promote datatype REAL to 8 bytes"
>>   echo "        - don't know how to invoke the C pre-processor (CPP) before 
>> compilation"
>>   echo "       Please edit the makefile and specify the requested compiler 
>> flags using the P variable."
>>   echo ""
>>   P="-r8 -Mpreprocess"
>>   NOCOMPILE=0
>>   read;;
>> 
>> After that compilation seemed to go fine.  I've attached makenek.inc as 
>> well.
>> 
>> --Mike