diff --git a/frame/base/bli_rntm.c b/frame/base/bli_rntm.c
index 6a100bbe8..dc0acf6bf 100644
--- a/frame/base/bli_rntm.c
+++ b/frame/base/bli_rntm.c
@@ -574,6 +574,10 @@ void bli_nthreads_optimum(
 			if(n < 15) n_threads_ideal = 1;
 			else	   n_threads_ideal = 4;
 		      }
+		    else if( ( m < 34) && (k < 68) && ( m < 34)) 
+		    {
+			n_threads_ideal = 1;
+		    }
 		    else
 		      {
 			if(n < 20) n_threads_ideal = 1;
diff --git a/kernels/zen/3/bli_trsm_small.c b/kernels/zen/3/bli_trsm_small.c
index c782a08a4..0fa8f66d5 100644
--- a/kernels/zen/3/bli_trsm_small.c
+++ b/kernels/zen/3/bli_trsm_small.c
@@ -2847,6 +2847,7 @@ BLIS_INLINE err_t dtrsm_XAltB_ref
 #define BLIS_PRE_STRSM_SMALL_3N_2M(AlphaVal,b11,cs_b)\
     ymm15 = _mm256_broadcast_ss((float const *)&AlphaVal);         /*register to hold alpha*/\
 \
+    xmm5 = _mm_setzero_ps();\
     xmm5 = _mm_loadl_pi(xmm5,(__m64*)(b11));\
     ymm6 = _mm256_insertf128_ps(ymm0, xmm5, 0);\
     ymm3 = _mm256_fmsub_ps(ymm6, ymm15, ymm3);\
@@ -3009,6 +3010,7 @@ BLIS_INLINE err_t dtrsm_XAltB_ref
 #define BLIS_PRE_STRSM_SMALL_2N_2M(AlphaVal,b11,cs_b)\
     ymm15 = _mm256_broadcast_ss((float const *)&AlphaVal);         /*register to hold alpha*/\
 \
+    xmm5 = _mm_setzero_ps();\
     xmm5 = _mm_loadl_pi(xmm5,(__m64*)(b11));\
     ymm6 = _mm256_insertf128_ps(ymm0, xmm5, 0);\
     ymm3 = _mm256_fmsub_ps(ymm6, ymm15, ymm3);\
@@ -3116,6 +3118,7 @@ BLIS_INLINE err_t dtrsm_XAltB_ref
 #define BLIS_PRE_STRSM_SMALL_1N_2M(AlphaVal,b11,cs_b)\
     ymm15 = _mm256_broadcast_ss((float const *)&AlphaVal);         /*register to hold alpha*/\
 \
+    xmm5 = _mm_setzero_ps();\
     xmm5 = _mm_loadl_pi(xmm5,(__m64*)(b11));\
     ymm6 = _mm256_insertf128_ps(ymm0, xmm5, 0);\
     ymm3 = _mm256_fmsub_ps(ymm6, ymm15, ymm3);