Getting your new kernel used

Once you have a kernel that beats the present offerings, and you have updated the appropriate index file(s), nothing could be easier. If you are starting from a fresh install without Level 1 arch defaults, you need do nothing further: the install process will find your kernel.

Things are almost as simple if you have already installed, and need to force a redo. First, get rid of old search results by issuing rm BLDdir/tune/blas/level1/res/<pre><blas>_SUMM. Then, go to BLDdir/src/blas/level1/, and type :

   rm Make_<pre><blas>
   make Make_<pre><blas>
   make <pre>lib
and that should do it.

So, to do that for the omnipresent DAXPY, on my PIII, I'd do:

   cd BLDdir
   rm tune/blas/level1/res/dAXPY_SUMM.
   cd ATLAS/src/blas/level1/
   rm Make_daxpy
   make Make_daxpy
   make dlib


Clint Whaley 2012-07-10