Modifying a couple paramaters in the "POWER10"-specific section of param.h, for performance enhancements for SGEMM and DGEMM.

param.h

@@ -2455,13 +2455,13 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define ZGEMM_DEFAULT_UNROLL_M 8
 #define ZGEMM_DEFAULT_UNROLL_N 2
 
-#define SGEMM_DEFAULT_P 832
-#define DGEMM_DEFAULT_P 320
+#define SGEMM_DEFAULT_P 512
+#define DGEMM_DEFAULT_P 384
 #define CGEMM_DEFAULT_P  512
 #define ZGEMM_DEFAULT_P 256
 
-#define SGEMM_DEFAULT_Q 1026
-#define DGEMM_DEFAULT_Q 960
+#define SGEMM_DEFAULT_Q 512
+#define DGEMM_DEFAULT_Q 512
 #define CGEMM_DEFAULT_Q  1026
 #define ZGEMM_DEFAULT_Q 1026