[Users] building on MIC

[Steven R. Brandt]

On 12/14/2012 11:03 AM, Erik Schnetter wrote:
> Steve
>
> Looking at the output, it seems that Cactus uses mpicc, while icc 
> reports and error. Does mpicc maybe use icc? What happens if you type 
> "mpicc --version"?
D'oh, of course. Didn't have my caffeine yet, I guess.
>
> Generally, I recommend against using mpicc, since it complicates the 
> configuration stage (it may be difficult to run small test programs). 
> With cross-compiling, this may not be so much of an issue since you 
> can't run test programs anyway.
>
> I assume that you are trying this with an empty thorn list?
No, but it's not complete ET either. Empty's probably a good idea though.
>
> Your option list looks strage. Is this really a Fedora system?
No. I just didn't fix the comments.
>
> You are setting MPI_DIR = /opt/apps/intel13/impi/4.1.0.024/intel64 
> <http://4.1.0.024/intel64>. Does this make sense, if you expect to not 
> be using icc? What compiler should be used to generate the code, gcc 
> or icc?
>
> You are setting FPP_OPENMP_FLAGS = -D_OPENMP; this is only necessary 
> for very old versions of GNU cpp. For modern versions, I 
> recommend FPP_OPENMP_FLAGS = -fopenmp.
Yes, but I have OPENMP = no. At least for now.
>
> You are using -rdynamic in CFLAGS. This is a linker option; it should 
> go to LDFLAGS instead.
Remnants of an older file.
>
> -erik
>
>
>
> On Fri, Dec 14, 2012 at 10:12 AM, Steven R. Brandt 
> <sbrandt at cct.lsu.edu <mailto:sbrandt at cct.lsu.edu>> wrote:
>
>     I'm trying to build on MIC. In order to do that, I have to cross
>     compile. See attached cfg file.
>
>     Anyhow, I build with simfactory and get this:
>
>     End of options from
>     '/home1/00044/tg457049/Cactus/configs/sim/OptionList'.
>     creating cache ./config.cache
>     checking host system type... x86_64-unknown-linux-gnu
>     checking whether make sets ${MAKE}... yes
>     checking whether the C compiler (mpicc -g3 -m128bit-long-double
>     -mmic -rdynamic -Wunused-variable ) works... yes
>     checking whether the C compiler (mpicc -g3 -m128bit-long-double
>     -mmic -rdynamic -Wunused-variable ) is a cross-compiler... yes
>     checking whether we are using GNU C... yes
>     checking whether the C++ compiler (mpicxx -g3 -m128bit-long-double
>     -mmic -std=c++03 -rdynamic -Wunused-variable ) works... yes
>     checking whether the C++ compiler (mpicxx -g3 -m128bit-long-double
>     -mmic -std=c++03 -rdynamic -Wunused-variable ) is a
>     cross-compiler... yes
>     checking whether we are using GNU C++... yes
>
>     So I expect the mpicc compiler to be used. It isn't. What am I
>     doing wrong?
>
>     Cheers,
>     Steve
>
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>
>
>
> -- 
> Erik Schnetter <schnetter at cct.lsu.edu <mailto:schnetter at cct.lsu.edu>>
> http://www.perimeterinstitute.ca/personal/eschnetter/

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