Added single-precision micro-kernel for Knights Corner aka MIC aka Xeon Phi

config/mic/bli_config.h

@@ -97,7 +97,7 @@
 // It is sometimes useful to define the various memory alignments in terms
 // of some other characteristics of the system, such as the cache line size
 // and the page size.
-#define BLIS_CACHE_LINE_SIZE             64
+#define BLIS_CACHE_LINE_SIZE             256
 #define BLIS_PAGE_SIZE                   4096
 
 // Alignment size needed by the instruction set for aligned SIMD/vector

config/mic/bli_kernel.h

@@ -54,35 +54,42 @@
 //     (b) NR (for triangular operations such as trmm and trsm).
 //
 
-#define BLIS_DEFAULT_MC_S              256
-#define BLIS_DEFAULT_KC_S              256
-#define BLIS_DEFAULT_NC_S              8192
+#define BLIS_DEFAULT_MC_S              240
+#define BLIS_DEFAULT_KC_S              240
+#define BLIS_DEFAULT_NC_S              9600
 
 #define BLIS_DEFAULT_MC_D              120
 #define BLIS_DEFAULT_KC_D              240
 #define BLIS_DEFAULT_NC_D              14400
 
-#define BLIS_DEFAULT_MC_C              128
-#define BLIS_DEFAULT_KC_C              256
-#define BLIS_DEFAULT_NC_C              4096
+#define BLIS_DEFAULT_4M_MC_C           BLIS_DEFAULT_MC_S
+#define BLIS_DEFAULT_4M_KC_C           BLIS_DEFAULT_KC_S
 
-#define BLIS_DEFAULT_MC_Z              64
-#define BLIS_DEFAULT_KC_Z              256
-#define BLIS_DEFAULT_NC_Z              2048
+#define BLIS_DEFAULT_3M_MC_C           BLIS_DEFAULT_MC_S
+#define BLIS_DEFAULT_3M_KC_C           BLIS_DEFAULT_KC_S
 
+/*
+#define BLIS_DEFAULT_MC_C              120
+#define BLIS_DEFAULT_KC_C              240
+#define BLIS_DEFAULT_NC_C              9600
+
+#define BLIS_DEFAULT_MC_Z              120
+#define BLIS_DEFAULT_KC_Z              240
+#define BLIS_DEFAULT_NC_Z              9600
+*/
 // -- Register blocksizes --
 
-#define BLIS_DEFAULT_MR_S              8
-#define BLIS_DEFAULT_NR_S              4
+#define BLIS_DEFAULT_MR_S              30
+#define BLIS_DEFAULT_NR_S              16
 
 #define BLIS_DEFAULT_MR_D              30
 #define BLIS_DEFAULT_NR_D              8
 
-#define BLIS_DEFAULT_MR_C              8
-#define BLIS_DEFAULT_NR_C              4
+//#define BLIS_DEFAULT_MR_C              8
+//#define BLIS_DEFAULT_NR_C              4
 
-#define BLIS_DEFAULT_MR_Z              8
-#define BLIS_DEFAULT_NR_Z              4
+//#define BLIS_DEFAULT_MR_Z              8
+//#define BLIS_DEFAULT_NR_Z              4
 
 // NOTE: If the micro-kernel, which is typically unrolled to a factor
 // of f, handles leftover edge cases (ie: when k % f > 0) then these
@@ -123,8 +130,8 @@
 // leading dimensions used within the packed micro-panels are equal to
 // or greater than their corresponding register blocksizes above.
 
-//#define BLIS_EXTEND_MR_S               0
-//#define BLIS_EXTEND_NR_S               0
+#define BLIS_EXTEND_MR_S               2
+#define BLIS_EXTEND_NR_S               0
 
 #define BLIS_EXTEND_MR_D               2
 #define BLIS_EXTEND_NR_D               0
@@ -153,12 +160,11 @@
 // -- gemm --
 
 #define BLIS_DGEMM_UKERNEL         bli_dgemm_opt_30x8
+#define BLIS_SGEMM_UKERNEL         bli_sgemm_opt_30x16
 
 // -- trsm-related --
 
 
-
-
 // -- LEVEL-1M KERNEL DEFINITIONS ----------------------------------------------
 
 // -- packm --

kernels/mic/3/bli_gemm_opt_30x8.c → kernels/mic/3/bli_dgemm_opt_30x8.c

@@ -40,25 +40,6 @@
 #define B_L1_PREFETCH_DIST 2
 #define L2_PREFETCH_DIST  16 // Must be greater than 10, because of the way the loop is constructed.
 
-void bli_sgemm_opt_30x8(
-                    dim_t           k,
-                    float* restrict alpha,
-                    float* restrict a,
-                    float* restrict b,
-                    float* restrict beta,
-                    float* restrict c, inc_t rs_c, inc_t cs_c,
-                    auxinfo_t*      data
-                  )
-{
-	BLIS_SGEMM_UKERNEL_REF( k,
-	                       alpha,
-	                       a,
-	                       b,
-	                       beta,
-	                       c, rs_c, cs_c,
-	                       data );
-}
-
 //Alternate code path uused if C is not row-major
 #define UPDATE_C_ROW_SCATTERED(REG1, NUM, BASE_DEST) \
 { \
@@ -268,7 +249,7 @@ void bli_sgemm_opt_30x8(
 }
 
 //This is an array used for the scattter/gather instructions.
-int offsets[16] __attribute__((aligned(0x1000))) = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+extern int offsets[16];
 
 
 //#define MONITORS