= Installing PVFS on BlueGene =

== Compiling the PVFS client on SuSE ppc64 ==

Note: 'VERSION' below should be the appropriate Linux kernel version (of course). 

=== Setup the Linux kernel sources ===

 * Install the kernel-source-VERSION rpm.  It might already be installed.
 * now copy /usr/src/linux-VERSION somewhere else.  Ignore the /usr/src/linux-VERSION-obj directory.  It's useless to us.
 * copy /boot/config-VERSION to .config in the new linux kernel source tree you made
 * {{{make oldconfig modules}}}  (secret hint: you can kill the build process as soon as you see the first module is built but it's ok if you let it go all the way)

=== Building PVFS ===

Phew, now with a real properly configured kernel tree you can get down to work.  The BlueGene login nodes are (usually) PPC64, and so require a 64-bit build.  No problem.  Just make sure to compile with -m64 added to your CFLAGS and LDFLAGS

 * {{{CFLAGS="-m64" LDFLAGS="-m64" configure --with-kernel=/path/to/your/kernel --disable-server}}}
 * {{{make kmod}}}