optimized dgemm and dgetrf for POWER8

common.h

@@ -332,6 +332,13 @@ typedef int blasint;
 #endif
 #endif
 
+#ifdef POWER8
+#ifndef YIELDING
+#define YIELDING        __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop;\n");
+#endif
+#endif
+
+
 /*
 #ifdef PILEDRIVER
 #ifndef YIELDING

kernel/power/dgemm_logic_16x4_power8.S

@@ -33,6 +33,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *	 LAPACK-TEST		: OK
 **************************************************************************************/
 
+#define MY_ALIGN .align 3
 
 	srawi.		J,	N,	2
 	ble		LDGEMM_L4_END
@@ -53,7 +54,7 @@ LDGEMM_L4_BEGIN:
 	srawi.		I,	M,	4
 	ble		LDGEMM_L4x16_END
 
-	.align 4
+	MY_ALIGN
 LDGEMM_L4x16_BEGIN_FIRST:
 
 	li		L,	-128
@@ -90,7 +91,7 @@ LDGEMM_L4x16_BEGIN_FIRST:
 	cmpwi		cr0,	L,	1
 	ble		LDGEMM_L4x16_SUB4_FIRST
 
-	.align 4
+	MY_ALIGN
 LDGEMM_L4x16_LOOP_START_FIRST:
 
 	li	T2,	512
@@ -115,7 +116,7 @@ LDGEMM_L4x16_LOOP_START_FIRST:
 	ble		LDGEMM_L4x16_LOOP_END_FIRST
 	mtctr		L
 
-	.align 4
+	MY_ALIGN
 
 LDGEMM_L4x16_LOOP_FIRST:
 
@@ -132,7 +133,7 @@ LDGEMM_L4x16_LOOP_FIRST:
 
 	bdnz		LDGEMM_L4x16_LOOP_FIRST
 
-	.align 4
+	MY_ALIGN
 
 LDGEMM_L4x16_LOOP_END_FIRST:
 
@@ -175,7 +176,7 @@ LDGEMM_L4x16_SUB2_FIRST:
 	addic.		L,	L,	-1
 	bgt		LDGEMM_L4x16_SUB2_FIRST
 
-	.align 4
+	MY_ALIGN
 LDGEMM_L4x16_SAVE_FIRST:
 
 	SAVE4x16
@@ -185,7 +186,8 @@ LDGEMM_L4x16_SAVE_FIRST:
 
 LDGEMM_L4x16_END_FIRST:
 
-	.align 4
+	MY_ALIGN
+
 LDGEMM_L4x16_BEGIN:
 
 	li		L,	-128
@@ -222,7 +224,8 @@ LDGEMM_L4x16_BEGIN:
 	cmpwi		cr0,	L,	1
 	ble-		LDGEMM_L4x16_SUB4
 
-	.align 4
+	MY_ALIGN
+
 LDGEMM_L4x16_LOOP_START:
 
 	li	o40,	40
@@ -239,20 +242,19 @@ LDGEMM_L4x16_LOOP_START:
 	ble-		LDGEMM_L4x16_LOOP_END
 	mtctr		L
 
-	.align 4
+	MY_ALIGN
 
 LDGEMM_L4x16_LOOP:
 
-
 	dcbt	AO,	PRE
 	KERNEL4x16_L1
 	dcbt	AO,	PRE
-	// addic.		L,	L,	-1
 	KERNEL4x16_L2
 
 	bdnz+		LDGEMM_L4x16_LOOP
 
-	.align 4
+
+	MY_ALIGN
 
 LDGEMM_L4x16_LOOP_END:
 
@@ -261,6 +263,8 @@ LDGEMM_L4x16_LOOP_END:
 
 	b		LDGEMM_L4x16_SUB1
 
+	MY_ALIGN
+
 LDGEMM_L4x16_SUB4:
 
 	KERNEL4x16_SUBI1
@@ -268,6 +272,8 @@ LDGEMM_L4x16_SUB4:
 
 	b		LDGEMM_L4x16_SUB1
 
+	MY_ALIGN
+
 LDGEMM_L4x16_SUB0:
 
 	andi.		L,	K,	1
@@ -278,11 +284,15 @@ LDGEMM_L4x16_SUB0:
 	ble		LDGEMM_L4x16_SAVE
 	b		LDGEMM_L4x16_SUB2
 
+	MY_ALIGN
+
 LDGEMM_L4x16_SUB1:
 
 	andi.		L,	K,	1
 	ble		LDGEMM_L4x16_SAVE
 
+	MY_ALIGN
+
 LDGEMM_L4x16_SUB2:
 
 	KERNEL4x16_SUB1
@@ -290,7 +300,8 @@ LDGEMM_L4x16_SUB2:
 	addic.		L,	L,	-1
 	bgt		LDGEMM_L4x16_SUB2
 
-	.align 4
+	MY_ALIGN
+
 LDGEMM_L4x16_SAVE:
 
 	SAVE4x16
@@ -334,7 +345,7 @@ LDGEMM_L4x8_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L4x8_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L4x8_LOOP:
 
@@ -441,7 +452,7 @@ LDGEMM_L4x4_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L4x4_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L4x4_LOOP:
 
@@ -543,7 +554,7 @@ LDGEMM_L4x2_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L4x2_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L4x2_LOOP:
 
@@ -643,7 +654,7 @@ LDGEMM_L4x1_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L4x1_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L4x1_LOOP:
 
@@ -778,7 +789,7 @@ LDGEMM_L2x16_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L2x16_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L2x16_LOOP:
 
@@ -907,7 +918,7 @@ LDGEMM_L2x8_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L2x8_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L2x8_LOOP:
 
@@ -1011,7 +1022,7 @@ LDGEMM_L2x4_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L2x4_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L2x4_LOOP:
 
@@ -1111,7 +1122,7 @@ LDGEMM_L2x2_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L2x2_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L2x2_LOOP:
 
@@ -1211,7 +1222,7 @@ LDGEMM_L2x1_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L2x1_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L2x1_LOOP:
 
@@ -1331,7 +1342,7 @@ LDGEMM_L1x16_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L1x16_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L1x16_LOOP:
 
@@ -1460,7 +1471,7 @@ LDGEMM_L1x8_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L1x8_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L1x8_LOOP:
 
@@ -1564,7 +1575,7 @@ LDGEMM_L1x4_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L1x4_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L1x4_LOOP:
 
@@ -1664,7 +1675,7 @@ LDGEMM_L1x2_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L1x2_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L1x2_LOOP:
 
@@ -1764,7 +1775,7 @@ LDGEMM_L1x1_LOOP_START:
 	addic.		L,	L,	-2
 	ble		LDGEMM_L1x1_LOOP_END
 
-	.align 5
+	MY_ALIGN
 
 LDGEMM_L1x1_LOOP:
 

kernel/power/dgemm_ncopy_macros_4_power8.S

@@ -127,6 +127,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	xxpermdi	vs62,	vs7,	vs15,	3
 	xxpermdi	vs63,	vs23,	vs31,	3
 
+	dcbt		BO,	PREB
 
 	stxvd2x		vs32,	o0,	BO
 	stxvd2x		vs33,	o16,	BO
@@ -138,6 +139,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	stxvd2x		vs39,	o112,	BO
 	addi		BO,	BO,	128
 
+	dcbt		BO,	PREB
+
 	stxvd2x		vs40,	o0,	BO
 	stxvd2x		vs41,	o16,	BO
 	stxvd2x		vs42,	o32,	BO
@@ -148,6 +151,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	stxvd2x		vs47,	o112,	BO
 	addi		BO,	BO,	128
 
+	dcbt		BO,	PREB
+
 	stxvd2x		vs48,	o0,	BO
 	stxvd2x		vs49,	o16,	BO
 	stxvd2x		vs50,	o32,	BO
@@ -158,6 +163,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	stxvd2x		vs55,	o112,	BO
 	addi		BO,	BO,	128
 
+	dcbt		BO,	PREB
+
 	stxvd2x		vs56,	o0,	BO
 	stxvd2x		vs57,	o16,	BO
 	stxvd2x		vs58,	o32,	BO

kernel/power/dgemm_tcopy_16_power8.S

@@ -170,7 +170,7 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	add	B2, B2, B
 	add	B1, B1, B
 
-	li	PREA,  256
+	li	PREA,  384
 	addi	PREB,  M16, 128
 
 	li	o8,	8

kernel/power/dgemm_tcopy_logic_16_power8.S

@@ -52,31 +52,31 @@ DCOPYT_L4_BEGIN:
 	ble		DCOPYT_L4x8_BEGIN
 
 	mr		BO,	B16
+	addi		T2,	M16,	384
+	mtctr		J
 
 	.align 5
 
 DCOPYT_L4x16_LOOP:
 
-/*
-	addi	T1,	PREB,	128
-	addi	T2,	PREB,	256
-*/
+	addi		T1,	M16,	256
+
 	dcbt	A0,	PREA
 	dcbt	A1,	PREA
 	dcbt	A2,	PREA
 	dcbt	A3,	PREA
-/*
-	dcbtst  BO,	M16
-	dcbtst  BO,	PREB
-	dcbtst  BO,	T1
-	dcbtst  BO,	T2
-*/
+
+	dcbt  BO,	M16
+	dcbt  BO,	PREB
+	dcbt  BO,	T1
+	dcbt  BO,	T2
+
 	COPY_4x16
 
 	add		BO,	BO,	M16
 
-	addic.		J,	J,	-1
-	bgt		DCOPYT_L4x16_LOOP
+	// addic.		J,	J,	-1
+	bdnz+		DCOPYT_L4x16_LOOP
 
 DCOPYT_L4x8_BEGIN:
 

kernel/power/dgemm_tcopy_macros_16_power8.S

@@ -46,52 +46,48 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 	lxvd2x		vs35,	o48,	A0
 	addi		A0,	A0,	64
 
-	lxvd2x		vs36,	o0,	A0
-	lxvd2x		vs37,	o16,	A0
-	lxvd2x		vs38,	o32,	A0
-	lxvd2x		vs39,	o48,	A0
-	addi		A0,	A0,	64
-
-
 	lxvd2x		vs40,	o0,	A1
 	lxvd2x		vs41,	o16,	A1
 	lxvd2x		vs42,	o32,	A1
 	lxvd2x		vs43,	o48,	A1
 	addi		A1,	A1,	64
 
-	lxvd2x		vs44,	o0,	A1
-	lxvd2x		vs45,	o16,	A1
-	lxvd2x		vs46,	o32,	A1
-	lxvd2x		vs47,	o48,	A1
-	addi		A1,	A1,	64
-
-
 	lxvd2x		vs48,	o0,	A2
 	lxvd2x		vs49,	o16,	A2
 	lxvd2x		vs50,	o32,	A2
 	lxvd2x		vs51,	o48,	A2
 	addi		A2,	A2,	64
 
-	lxvd2x		vs52,	o0,	A2
-	lxvd2x		vs53,	o16,	A2
-	lxvd2x		vs54,	o32,	A2
-	lxvd2x		vs55,	o48,	A2
-	addi		A2,	A2,	64
-
-
 	lxvd2x		vs56,	o0,	A3
 	lxvd2x		vs57,	o16,	A3
 	lxvd2x		vs58,	o32,	A3
 	lxvd2x		vs59,	o48,	A3
 	addi		A3,	A3,	64
 
+	lxvd2x		vs36,	o0,	A0
+	lxvd2x		vs37,	o16,	A0
+	lxvd2x		vs38,	o32,	A0
+	lxvd2x		vs39,	o48,	A0
+	addi		A0,	A0,	64
+
+	lxvd2x		vs44,	o0,	A1
+	lxvd2x		vs45,	o16,	A1
+	lxvd2x		vs46,	o32,	A1
+	lxvd2x		vs47,	o48,	A1
+	addi		A1,	A1,	64
+
+	lxvd2x		vs52,	o0,	A2
+	lxvd2x		vs53,	o16,	A2
+	lxvd2x		vs54,	o32,	A2
+	lxvd2x		vs55,	o48,	A2
+	addi		A2,	A2,	64
+
 	lxvd2x		vs60,	o0,	A3
 	lxvd2x		vs61,	o16,	A3
 	lxvd2x		vs62,	o32,	A3
 	lxvd2x		vs63,	o48,	A3
 	addi		A3,	A3,	64
 
-
 	mr		T1,	BO
 
 	stxvd2x		vs32,	o0,	T1

lapack/getrf/getrf_parallel_omp.c

@@ -173,10 +173,17 @@ blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa,
   blocking = (mn / 2 + GEMM_UNROLL_N - 1) & ~(GEMM_UNROLL_N - 1);
   if (blocking > GEMM_Q) blocking = GEMM_Q;
 
-  if (blocking <= GEMM_UNROLL_N * 2) {
+#ifdef POWER8
+  if (blocking <= GEMM_UNROLL_N) {
     info = GETF2(args, NULL, range_n, sa, sb, 0);
     return info;
   }
+#else
+  if (blocking <= GEMM_UNROLL_N*2) {
+    info = GETF2(args, NULL, range_n, sa, sb, 0);
+    return info;
+  }
+#endif
 
   sbb = (FLOAT *)((((BLASULONG)(sb + blocking * blocking * COMPSIZE) + GEMM_ALIGN) & ~GEMM_ALIGN) + GEMM_OFFSET_B);