diff --git a/Makefile.system b/Makefile.system
index 9663322fa..2134786c0 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -324,14 +324,14 @@ ifeq ($(ARCH), x86)
 DYNAMIC_CORE = KATMAI COPPERMINE NORTHWOOD PRESCOTT BANIAS \
 	       CORE2 PENRYN DUNNINGTON NEHALEM ATHLON OPTERON OPTERON_SSE3 BARCELONA BOBCAT ATOM NANO
 ifneq ($(NO_AVX), 1)
-DYNAMIC_CORE += SANDYBRIDGE BULLDOZER PILEDRIVER
+DYNAMIC_CORE += SANDYBRIDGE BULLDOZER PILEDRIVER HASWELL
 endif
 endif
 
 ifeq ($(ARCH), x86_64)
 DYNAMIC_CORE = PRESCOTT CORE2 PENRYN DUNNINGTON NEHALEM OPTERON OPTERON_SSE3 BARCELONA BOBCAT ATOM NANO
 ifneq ($(NO_AVX), 1)
-DYNAMIC_CORE += SANDYBRIDGE BULLDOZER PILEDRIVER
+DYNAMIC_CORE += SANDYBRIDGE BULLDOZER PILEDRIVER HASWELL
 endif
 endif
 
diff --git a/common_x86.h b/common_x86.h
index 48517d900..49e6be29e 100644
--- a/common_x86.h
+++ b/common_x86.h
@@ -171,6 +171,11 @@ static __inline int blas_quickdivide(unsigned int x, unsigned int y){
 #define MMXSTORE	movd
 #endif
 
+#if defined(SANDYBRIDGE) || defined(HASWELL)
+//Enable some optimazation for nehalem.
+#define NEHALEM_OPTIMIZATION
+#endif
+
 #if defined(PILEDRIVER) || defined(BULLDOZER)
 //Enable some optimazation for barcelona.
 #define BARCELONA_OPTIMIZATION
diff --git a/common_x86_64.h b/common_x86_64.h
index 188903848..8e9d79443 100644
--- a/common_x86_64.h
+++ b/common_x86_64.h
@@ -218,6 +218,12 @@ static __inline int blas_quickdivide(unsigned int x, unsigned int y){
 
 #ifdef ASSEMBLER
 
+#if defined(SANDYBRIDGE) || defined(HASWELL)
+//Enable some optimazation for nehalem.
+#define NEHALEM_OPTIMIZATION
+#endif
+
+
 #if defined(PILEDRIVER) || defined(BULLDOZER)
 //Enable some optimazation for barcelona.
 #define BARCELONA_OPTIMIZATION
diff --git a/cpuid.h b/cpuid.h
index 2cbbd4539..cb4404cb0 100644
--- a/cpuid.h
+++ b/cpuid.h
@@ -107,7 +107,7 @@
 #define CORE_BOBCAT     21
 #define CORE_BULLDOZER  22
 #define CORE_PILEDRIVER  23
-#define CORE_HASWELL CORE_SANDYBRIDGE
+#define CORE_HASWELL 24
 
 #define HAVE_SSE      (1 <<  0)
 #define HAVE_SSE2     (1 <<  1)
@@ -200,7 +200,6 @@ typedef struct {
 #define CPUTYPE_BOBCAT                  45
 #define CPUTYPE_BULLDOZER               46
 #define CPUTYPE_PILEDRIVER              47
-// this define is because BLAS doesn't have haswell specific optimizations yet
-#define CPUTYPE_HASWELL CPUTYPE_SANDYBRIDGE 
+#define CPUTYPE_HASWELL 48
 
 #endif
diff --git a/cpuid_x86.c b/cpuid_x86.c
index 9e850a2aa..4ed01b891 100644
--- a/cpuid_x86.c
+++ b/cpuid_x86.c
@@ -1243,6 +1243,7 @@ static char *cpuname[] = {
   "BOBCAT",
   "BULLDOZER",
   "PILEDRIVER",
+  "HASWELL",
 };
 
 static char *lowercpuname[] = {
@@ -1293,6 +1294,7 @@ static char *lowercpuname[] = {
   "bobcat",
   "bulldozer",
   "piledriver",
+  "haswell",
 };
 
 static char *corename[] = {
@@ -1320,6 +1322,7 @@ static char *corename[] = {
   "BOBCAT",
   "BULLDOZER",
   "PILEDRIVER",
+  "HASWELL",
 };
 
 static char *corename_lower[] = {
@@ -1347,6 +1350,7 @@ static char *corename_lower[] = {
   "bobcat",
   "bulldozer",
   "piledriver",
+  "haswell",
 };
 
 
diff --git a/driver/others/dynamic.c b/driver/others/dynamic.c
index 197cc2b2d..bc6c386ec 100644
--- a/driver/others/dynamic.c
+++ b/driver/others/dynamic.c
@@ -65,14 +65,15 @@ extern gotoblas_t  gotoblas_BOBCAT;
 extern gotoblas_t  gotoblas_SANDYBRIDGE;
 extern gotoblas_t  gotoblas_BULLDOZER;
 extern gotoblas_t  gotoblas_PILEDRIVER;
+extern gotoblas_t  gotoblas_HASWELL;
 #else
 //Use NEHALEM kernels for sandy bridge
 #define gotoblas_SANDYBRIDGE gotoblas_NEHALEM
+#define gotoblas_HASWELL gotoblas_NEHALEM
 #define gotoblas_BULLDOZER gotoblas_BARCELONA
 #define gotoblas_PILEDRIVER gotoblas_BARCELONA
 #endif
-//Use sandy bridge kernels for haswell.
-#define gotoblas_HASWELL gotoblas_SANDYBRIDGE
+
 
 #define VENDOR_INTEL      1
 #define VENDOR_AMD        2
@@ -285,6 +286,7 @@ static char *corename[] = {
     "Bobcat",
     "Bulldozer",
     "Piledriver",
+    "Haswell",
 };
 
 char *gotoblas_corename(void) {
@@ -307,7 +309,8 @@ char *gotoblas_corename(void) {
   if (gotoblas == &gotoblas_SANDYBRIDGE)  return corename[16];
   if (gotoblas == &gotoblas_BOBCAT)       return corename[17];
   if (gotoblas == &gotoblas_BULLDOZER)    return corename[18];
-  if (gotoblas == &gotoblas_PILEDRIVER)    return corename[19];
+  if (gotoblas == &gotoblas_PILEDRIVER)   return corename[19];
+  if (gotoblas == &gotoblas_HASWELL)      return corename[20];
 
   return corename[0];
 }
diff --git a/getarch.c b/getarch.c
index 3ffda6244..274d2a868 100644
--- a/getarch.c
+++ b/getarch.c
@@ -298,6 +298,21 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define CORENAME  "SANDYBRIDGE"
 #endif
 
+#ifdef FORCE_HASWELL
+#define FORCE
+#define FORCE_INTEL
+#define ARCHITECTURE    "X86"
+#define SUBARCHITECTURE "HASWELL"
+#define ARCHCONFIG   "-DHASWELL " \
+		     "-DL1_DATA_SIZE=32768 -DL1_DATA_LINESIZE=64 " \
+		     "-DL2_SIZE=262144 -DL2_LINESIZE=64 " \
+		     "-DDTB_DEFAULT_ENTRIES=64 -DDTB_SIZE=4096 " \
+		     "-DHAVE_CMOV -DHAVE_MMX -DHAVE_SSE -DHAVE_SSE2 -DHAVE_SSE3 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 -DHAVE_AVX " \
+                     "-DFMA3"
+#define LIBNAME   "haswell"
+#define CORENAME  "HASWELL"
+#endif
+
 #ifdef FORCE_ATOM
 #define FORCE
 #define FORCE_INTEL
diff --git a/kernel/x86/KERNEL.HASWELL b/kernel/x86/KERNEL.HASWELL
new file mode 100644
index 000000000..65b03ae50
--- /dev/null
+++ b/kernel/x86/KERNEL.HASWELL
@@ -0,0 +1 @@
+include $(KERNELDIR)/KERNEL.PENRYN
diff --git a/kernel/x86/trsm_kernel_LN_2x4_penryn.S b/kernel/x86/trsm_kernel_LN_2x4_penryn.S
index ebd1377f1..b620f6d12 100644
--- a/kernel/x86/trsm_kernel_LN_2x4_penryn.S
+++ b/kernel/x86/trsm_kernel_LN_2x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
diff --git a/kernel/x86/trsm_kernel_LN_4x4_penryn.S b/kernel/x86/trsm_kernel_LN_4x4_penryn.S
index 6fa7d410e..3823aa08b 100644
--- a/kernel/x86/trsm_kernel_LN_4x4_penryn.S
+++ b/kernel/x86/trsm_kernel_LN_4x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
diff --git a/kernel/x86/trsm_kernel_LT_2x4_penryn.S b/kernel/x86/trsm_kernel_LT_2x4_penryn.S
index 9ce4cd8d4..e60444b08 100644
--- a/kernel/x86/trsm_kernel_LT_2x4_penryn.S
+++ b/kernel/x86/trsm_kernel_LT_2x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
diff --git a/kernel/x86/trsm_kernel_LT_4x4_penryn.S b/kernel/x86/trsm_kernel_LT_4x4_penryn.S
index a1a35a7a5..f19047d14 100644
--- a/kernel/x86/trsm_kernel_LT_4x4_penryn.S
+++ b/kernel/x86/trsm_kernel_LT_4x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
diff --git a/kernel/x86/trsm_kernel_RT_2x4_penryn.S b/kernel/x86/trsm_kernel_RT_2x4_penryn.S
index a5333640d..4a87539bf 100644
--- a/kernel/x86/trsm_kernel_RT_2x4_penryn.S
+++ b/kernel/x86/trsm_kernel_RT_2x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
diff --git a/kernel/x86/trsm_kernel_RT_4x4_penryn.S b/kernel/x86/trsm_kernel_RT_4x4_penryn.S
index c3619ec3d..79222a07a 100644
--- a/kernel/x86/trsm_kernel_RT_4x4_penryn.S
+++ b/kernel/x86/trsm_kernel_RT_4x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
diff --git a/kernel/x86/ztrsm_kernel_LN_2x2_penryn.S b/kernel/x86/ztrsm_kernel_LN_2x2_penryn.S
index 53e53c3ce..0a646e980 100644
--- a/kernel/x86/ztrsm_kernel_LN_2x2_penryn.S
+++ b/kernel/x86/ztrsm_kernel_LN_2x2_penryn.S
@@ -61,7 +61,7 @@
 #define PREFETCHSIZE 84
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht1
 #define PREFETCHSIZE 84
 #endif
diff --git a/kernel/x86/ztrsm_kernel_LT_1x2_penryn.S b/kernel/x86/ztrsm_kernel_LT_1x2_penryn.S
index 3c056cdff..58d8b4d6d 100644
--- a/kernel/x86/ztrsm_kernel_LT_1x2_penryn.S
+++ b/kernel/x86/ztrsm_kernel_LT_1x2_penryn.S
@@ -63,7 +63,7 @@
 #define PREFETCHSIZE 84
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht1
 #define PREFETCHSIZE 84
 #endif
diff --git a/kernel/x86/ztrsm_kernel_LT_2x2_penryn.S b/kernel/x86/ztrsm_kernel_LT_2x2_penryn.S
index 1efa1fd25..1604da17f 100644
--- a/kernel/x86/ztrsm_kernel_LT_2x2_penryn.S
+++ b/kernel/x86/ztrsm_kernel_LT_2x2_penryn.S
@@ -61,7 +61,7 @@
 #define PREFETCHSIZE 84
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht1
 #define PREFETCHSIZE 84
 #endif
diff --git a/kernel/x86/ztrsm_kernel_RT_1x2_penryn.S b/kernel/x86/ztrsm_kernel_RT_1x2_penryn.S
index 849afed73..fce813eb4 100644
--- a/kernel/x86/ztrsm_kernel_RT_1x2_penryn.S
+++ b/kernel/x86/ztrsm_kernel_RT_1x2_penryn.S
@@ -63,7 +63,7 @@
 #define PREFETCHSIZE 84
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht1
 #define PREFETCHSIZE 84
 #endif
diff --git a/kernel/x86/ztrsm_kernel_RT_2x2_penryn.S b/kernel/x86/ztrsm_kernel_RT_2x2_penryn.S
index c1833abe2..fda1a9860 100644
--- a/kernel/x86/ztrsm_kernel_RT_2x2_penryn.S
+++ b/kernel/x86/ztrsm_kernel_RT_2x2_penryn.S
@@ -61,7 +61,7 @@
 #define PREFETCHSIZE 84
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht1
 #define PREFETCHSIZE 84
 #endif
diff --git a/kernel/x86_64/KERNEL.HASWELL b/kernel/x86_64/KERNEL.HASWELL
new file mode 100644
index 000000000..c321be752
--- /dev/null
+++ b/kernel/x86_64/KERNEL.HASWELL
@@ -0,0 +1,84 @@
+SGEMMKERNEL    =  sgemm_kernel_8x8_sandy.S
+SGEMMINCOPY    =  
+SGEMMITCOPY    =  
+SGEMMONCOPY    =  ../generic/gemm_ncopy_8.c
+SGEMMOTCOPY    =  ../generic/gemm_tcopy_8.c
+SGEMMINCOPYOBJ =   
+SGEMMITCOPYOBJ =   
+SGEMMONCOPYOBJ =  sgemm_oncopy$(TSUFFIX).$(SUFFIX)
+SGEMMOTCOPYOBJ =  sgemm_otcopy$(TSUFFIX).$(SUFFIX)
+DGEMMKERNEL    =  dgemm_kernel_4x8_sandy.S
+DGEMMINCOPY    =  ../generic/gemm_ncopy_8.c
+DGEMMITCOPY    =  ../generic/gemm_tcopy_8.c
+#DGEMMONCOPY    =  gemm_ncopy_4.S
+DGEMMONCOPY    =  ../generic/gemm_ncopy_4.c
+DGEMMOTCOPY    =  ../generic/gemm_tcopy_4.c
+#DGEMMOTCOPY    =  gemm_tcopy_4.S
+DGEMMINCOPYOBJ =  dgemm_incopy$(TSUFFIX).$(SUFFIX)
+DGEMMITCOPYOBJ =  dgemm_itcopy$(TSUFFIX).$(SUFFIX)
+DGEMMONCOPYOBJ =  dgemm_oncopy$(TSUFFIX).$(SUFFIX)
+DGEMMOTCOPYOBJ =  dgemm_otcopy$(TSUFFIX).$(SUFFIX)
+#CGEMMKERNEL    =  zgemm_kernel_2x4_nehalem.S
+CGEMMKERNEL    =  cgemm_kernel_4x8_sandy.S
+CGEMMINCOPY    =  ../generic/zgemm_ncopy_8_sandy.c
+CGEMMITCOPY    =  ../generic/zgemm_tcopy_8_sandy.c
+CGEMMONCOPY    =  ../generic/zgemm_ncopy_4_sandy.c
+CGEMMOTCOPY    =  ../generic/zgemm_tcopy_4_sandy.c
+CGEMMINCOPYOBJ =  cgemm_incopy$(TSUFFIX).$(SUFFIX)
+CGEMMITCOPYOBJ =  cgemm_itcopy$(TSUFFIX).$(SUFFIX)
+CGEMMONCOPYOBJ =  cgemm_oncopy$(TSUFFIX).$(SUFFIX)
+CGEMMOTCOPYOBJ =  cgemm_otcopy$(TSUFFIX).$(SUFFIX)
+#ZGEMMKERNEL    =  zgemm_kernel_1x4_nehalem.S
+ZGEMMKERNEL    =  zgemm_kernel_4x4_sandy.S
+ZGEMMINCOPY    =  
+ZGEMMITCOPY    = 
+ZGEMMONCOPY    =  ../generic/zgemm_ncopy_4.c
+ZGEMMOTCOPY    =  ../generic/zgemm_tcopy_4.c
+ZGEMMINCOPYOBJ =  
+ZGEMMITCOPYOBJ =  
+ZGEMMONCOPYOBJ =  zgemm_oncopy$(TSUFFIX).$(SUFFIX)
+ZGEMMOTCOPYOBJ =  zgemm_otcopy$(TSUFFIX).$(SUFFIX)
+
+#STRSMKERNEL_LN	=  trsm_kernel_LN_4x8_nehalem.S
+#STRSMKERNEL_LT	=  trsm_kernel_LT_4x8_nehalem.S
+#STRSMKERNEL_RN	=  trsm_kernel_LT_4x8_nehalem.S
+#STRSMKERNEL_RT	=  trsm_kernel_RT_4x8_nehalem.S
+
+#DTRSMKERNEL_LN	=  trsm_kernel_LN_2x8_nehalem.S
+#DTRSMKERNEL_LT	=  trsm_kernel_LT_2x8_nehalem.S
+#DTRSMKERNEL_RN	=  trsm_kernel_LT_2x8_nehalem.S
+#DTRSMKERNEL_RT	=  trsm_kernel_RT_2x8_nehalem.S
+
+#CTRSMKERNEL_LN	=  ztrsm_kernel_LN_2x4_nehalem.S
+#CTRSMKERNEL_LT	=  ztrsm_kernel_LT_2x4_nehalem.S
+#CTRSMKERNEL_RN	=  ztrsm_kernel_LT_2x4_nehalem.S
+#CTRSMKERNEL_RT	=  ztrsm_kernel_RT_2x4_nehalem.S
+
+#ZTRSMKERNEL_LN	=  ztrsm_kernel_LT_1x4_nehalem.S
+#ZTRSMKERNEL_LT	=  ztrsm_kernel_LT_1x4_nehalem.S
+#ZTRSMKERNEL_RN	=  ztrsm_kernel_LT_1x4_nehalem.S
+#ZTRSMKERNEL_RT	=  ztrsm_kernel_RT_1x4_nehalem.S
+STRSMKERNEL_LN	=  ../generic/trsm_kernel_LN.c
+STRSMKERNEL_LT	=  ../generic/trsm_kernel_LT.c
+STRSMKERNEL_RN	=  ../generic/trsm_kernel_RN.c
+STRSMKERNEL_RT	=  ../generic/trsm_kernel_RT.c
+
+DTRSMKERNEL_LN	= ../generic/trsm_kernel_LN.c
+DTRSMKERNEL_LT	= ../generic/trsm_kernel_LT.c
+DTRSMKERNEL_RN	= ../generic/trsm_kernel_RN.c
+DTRSMKERNEL_RT	= ../generic/trsm_kernel_RT.c
+
+CTRSMKERNEL_LN	= ../generic/trsm_kernel_LN.c
+CTRSMKERNEL_LT	= ../generic/trsm_kernel_LT.c
+CTRSMKERNEL_RN	= ../generic/trsm_kernel_RN.c
+CTRSMKERNEL_RT	= ../generic/trsm_kernel_RT.c
+
+ZTRSMKERNEL_LN	= ../generic/trsm_kernel_LN.c
+ZTRSMKERNEL_LT	= ../generic/trsm_kernel_LT.c
+ZTRSMKERNEL_RN	= ../generic/trsm_kernel_RN.c
+ZTRSMKERNEL_RT	= ../generic/trsm_kernel_RT.c
+
+
+
+CGEMM3MKERNEL    =  zgemm3m_kernel_4x8_nehalem.S
+ZGEMM3MKERNEL    =  zgemm3m_kernel_2x8_nehalem.S
diff --git a/kernel/x86_64/symv_L_sse.S b/kernel/x86_64/symv_L_sse.S
index f56490ee3..aad66b4ac 100644
--- a/kernel/x86_64/symv_L_sse.S
+++ b/kernel/x86_64/symv_L_sse.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 12)
diff --git a/kernel/x86_64/symv_L_sse2.S b/kernel/x86_64/symv_L_sse2.S
index bb40ac41e..1b28bcd20 100644
--- a/kernel/x86_64/symv_L_sse2.S
+++ b/kernel/x86_64/symv_L_sse2.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 12)
diff --git a/kernel/x86_64/symv_U_sse.S b/kernel/x86_64/symv_U_sse.S
index 653a96ff8..12aab61ed 100644
--- a/kernel/x86_64/symv_U_sse.S
+++ b/kernel/x86_64/symv_U_sse.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 12)
diff --git a/kernel/x86_64/symv_U_sse2.S b/kernel/x86_64/symv_U_sse2.S
index e26088c16..d044dfbe2 100644
--- a/kernel/x86_64/symv_U_sse2.S
+++ b/kernel/x86_64/symv_U_sse2.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 24)
diff --git a/kernel/x86_64/zsymv_L_sse.S b/kernel/x86_64/zsymv_L_sse.S
index 7f3b54ddb..f818170a3 100644
--- a/kernel/x86_64/zsymv_L_sse.S
+++ b/kernel/x86_64/zsymv_L_sse.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 24)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 24)
diff --git a/kernel/x86_64/zsymv_L_sse2.S b/kernel/x86_64/zsymv_L_sse2.S
index 852a81820..7b6c5976d 100644
--- a/kernel/x86_64/zsymv_L_sse2.S
+++ b/kernel/x86_64/zsymv_L_sse2.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 24)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 24)
diff --git a/kernel/x86_64/zsymv_U_sse.S b/kernel/x86_64/zsymv_U_sse.S
index c79e7f1a2..6dabf0735 100644
--- a/kernel/x86_64/zsymv_U_sse.S
+++ b/kernel/x86_64/zsymv_U_sse.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 24)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 24)
diff --git a/kernel/x86_64/zsymv_U_sse2.S b/kernel/x86_64/zsymv_U_sse2.S
index 6d0afce18..df64d8045 100644
--- a/kernel/x86_64/zsymv_U_sse2.S
+++ b/kernel/x86_64/zsymv_U_sse2.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 24)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE)
+#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 24)
diff --git a/param.h b/param.h
index 0c3df6951..e4b3871b1 100644
--- a/param.h
+++ b/param.h
@@ -1150,6 +1150,82 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #endif
 
+#ifdef HASWELL
+
+#define SNUMOPT		8
+#define DNUMOPT		4
+
+#define GEMM_DEFAULT_OFFSET_A	  0
+#define GEMM_DEFAULT_OFFSET_B     0
+#define GEMM_DEFAULT_ALIGN 0x03fffUL
+
+#define SYMV_P	8
+
+#define SWITCH_RATIO	4
+
+#ifdef ARCH_X86
+#define SGEMM_DEFAULT_UNROLL_M 4
+#define DGEMM_DEFAULT_UNROLL_M 2
+#define QGEMM_DEFAULT_UNROLL_M 2
+#define CGEMM_DEFAULT_UNROLL_M 2
+#define ZGEMM_DEFAULT_UNROLL_M 1
+#define XGEMM_DEFAULT_UNROLL_M 1
+
+#define SGEMM_DEFAULT_UNROLL_N 4
+#define DGEMM_DEFAULT_UNROLL_N 4
+#define QGEMM_DEFAULT_UNROLL_N 2
+#define CGEMM_DEFAULT_UNROLL_N 2
+#define ZGEMM_DEFAULT_UNROLL_N 2
+#define XGEMM_DEFAULT_UNROLL_N 1
+#else
+#define SGEMM_DEFAULT_UNROLL_M 8
+#define DGEMM_DEFAULT_UNROLL_M 8
+#define QGEMM_DEFAULT_UNROLL_M 2
+#define CGEMM_DEFAULT_UNROLL_M 8
+#define ZGEMM_DEFAULT_UNROLL_M 4
+#define XGEMM_DEFAULT_UNROLL_M 1
+
+#define SGEMM_DEFAULT_UNROLL_N 8
+#define DGEMM_DEFAULT_UNROLL_N 4
+#define QGEMM_DEFAULT_UNROLL_N 2
+#define CGEMM_DEFAULT_UNROLL_N 4
+#define ZGEMM_DEFAULT_UNROLL_N 4
+#define XGEMM_DEFAULT_UNROLL_N 1
+#endif
+
+#define SGEMM_DEFAULT_P 512
+#define SGEMM_DEFAULT_R sgemm_r
+//#define SGEMM_DEFAULT_R 1024
+
+#define DGEMM_DEFAULT_P 512
+#define DGEMM_DEFAULT_R dgemm_r
+//#define DGEMM_DEFAULT_R 1024
+
+#define QGEMM_DEFAULT_P 504
+#define QGEMM_DEFAULT_R qgemm_r
+
+#define CGEMM_DEFAULT_P 128
+//#define CGEMM_DEFAULT_R cgemm_r
+#define CGEMM_DEFAULT_R 1024
+
+#define ZGEMM_DEFAULT_P 512
+#define ZGEMM_DEFAULT_R zgemm_r
+//#define ZGEMM_DEFAULT_R 1024
+
+#define XGEMM_DEFAULT_P 252
+#define XGEMM_DEFAULT_R xgemm_r
+
+#define SGEMM_DEFAULT_Q 256
+#define DGEMM_DEFAULT_Q 256
+#define QGEMM_DEFAULT_Q 128
+#define CGEMM_DEFAULT_Q 256 
+#define ZGEMM_DEFAULT_Q 192
+#define XGEMM_DEFAULT_Q 128
+
+#define GETRF_FACTOR 0.72
+
+#endif
+
 
 
 #ifdef ATOM