Good Morning,
I am working on setting up LAM-MPI on a Xeon EMT system running a 64-bit
distro of Linux that will be the head node for a cluster of 32-bit Linux
servers. Thankfully, we don't need to worry about jobs running on both the head
node and the compute nodes, but a requirement has been imposed on me that all
compiles on this system need to generate 32-bit x86 code by default. I've
sucessfully built LAM-MPI 7.1.1 on this system and when I insert -m32 on the
mpicc command line, I generate code that runs happily (even with shared
libraries) on our 32-bit compute nodes.
My problem is trying to add additional flags to the mpicc/mpiCC/mpif77
programs (-m32 and -march=pentium3, in particular) to automatically get this
result. I added the options to the CFLAGS environment variable on the configure
command line and I tried playing with the --with-extra-ld-flags option to
configure, but mpicc -showme indicates that the architecture flags are just
getting ignored.
Is there an easy way to force the compiler wrapper programs to add additional
flags to the default set provided?
Thanks,
Andy
--
Andrew Fant | The lion and the calf shall lie | Disclaimer:
andrew.fant_at_[hidden] | down together, but the calf won't | Do you REALLY
UIT/USG | get much sleep. | think I can
Tufts University | W. Allen | speak for Tufts?
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