[Llvm-bgq-discuss] compilation + core dump question

[Jeff Hammond]

Technically, Cray is cross-compiling but in practice it has no impact.

Jeff

----- Original Message -----
> From: "John A. Biddiscombe" <biddisco at cscs.ch>
> To: "Hal Finkel" <hfinkel at anl.gov>
> Cc: llvm-bgq-discuss at lists.alcf.anl.gov
> Sent: Wednesday, September 11, 2013 9:58:19 AM
> Subject: Re: [Llvm-bgq-discuss] compilation + core dump question
> 
> Hal,
> 
> > I don't understand what you're trying to do there. If that
> > executable was
> > compiled with bgclang, and linked against PAMI, etc. then it can't
> > be run on
> > the frontend node. Can you explain?
> 
> Unfortunately, the depth of my ignorance is quite profound. Having
> spent years using crays where I could usually run executables
> compiled for the compute nodes, on the front end nodes, I just
> assumed that there'd be the same chips on the front end as the CN
> and most stuff would run ok. turns out this is far from true and so
> I will await the machine coming up again to experiment more.
> 
> (The code I compiled using xl did run on the front end though)
> 
> 
> > I used /tmp/bgclang as the example directory on the web page, but
> > you
> > might actually want to use someplace in your home directory ;)
> 
> Indeed. I'm ahead of you there. I had changed to my home dir, since
> the filesystem is being periodically wiped during installation,
> nothing is safe, so it hardly matters where I put stuff :)
> 
> Thanks for the help - especially to whoever is responsible for
> getting the clang rpms made, this is really magic. I can't compile
> my C++!! stuff with xl, so seeing this work out of the box makes me
> very happy.
> 
> JB
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> 

-- 
Jeff Hammond
Argonne Leadership Computing Facility
University of Chicago Computation Institute
jhammond at alcf.anl.gov / (630) 252-5381
http://www.linkedin.com/in/jeffhammond
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