On 11/13/2016 04:55 PM, Steve Kargl wrote:
On Sun, Nov 13, 2016 at 04:08:50PM -0800, Jerry DeLisle wrote:
Hi all,
Attached patch implements a fast blocked matrix multiply. The basic algorithm is
derived from netlib.org tuned blas dgemm. See matmul.m4 for reference.
The matmul() function is compiled with -Ofast -funroll-loops. This can be
customized further if there is an undesired optimization being used. This is
accomplished using #pragma optimize ( string ).
Did you run any tests with '--param max-unroll-times=4' where
the 4 could be something other than 4. On troutmask, with my
code I've found that 4 seems to work the best with -funroll-loops.
Have not tried this, will give it a try. Also, I have not tested on your FreeBSD
machine yet.
Jerry
