diff --git a/ggml.c b/ggml.c
index e88b9fbe4..a822cc9b4 100644
--- a/ggml.c
+++ b/ggml.c
@@ -5893,27 +5893,36 @@ static void ggml_compute_forward_add_f16_f32(
     const int n  = ggml_nrows(src0);
     const int nc = src0->ne[0];
 
-    //const size_t nb00 = src0->nb[0];
+    const size_t nb00 = src0->nb[0];
     const size_t nb01 = src0->nb[1];
 
     const size_t nb10 = src1->nb[0];
     const size_t nb11 = src1->nb[1];
 
-    //const size_t nb0 = dst->nb[0];
+    const size_t nb0 = dst->nb[0];
     const size_t nb1 = dst->nb[1];
 
     GGML_ASSERT(src0->type == GGML_TYPE_F16);
     GGML_ASSERT(src1->type == GGML_TYPE_F32);
     GGML_ASSERT(dst->type == GGML_TYPE_F16);
 
-    for (int j = ith; j < n; j += nth) {
-        ggml_fp16_t * dst_ptr  = (ggml_fp16_t *) ((char *) dst->data  + j*nb1);
-        ggml_fp16_t * src0_ptr = (ggml_fp16_t *) ((char *) src0->data + j*nb01);
-        for (int i = 0; i < nc; i++) {
-            float * src1_ptr = (float *) ((char *) src1->data + j*nb11 + i*nb10);
-            dst_ptr[i] = GGML_FP32_TO_FP16(GGML_FP16_TO_FP32(src0_ptr[i]) + *src1_ptr);
+    GGML_ASSERT( nb0 == sizeof(ggml_fp16_t));
+    GGML_ASSERT(nb00 == sizeof(ggml_fp16_t));
+
+    if (nb10 == sizeof(float)) {
+        for (int j = ith; j < n; j += nth) {
+            ggml_fp16_t * dst_ptr  = (ggml_fp16_t *) ((char *) dst->data  + j*nb1);
+            ggml_fp16_t * src0_ptr = (ggml_fp16_t *) ((char *) src0->data + j*nb01);
+            for (int i = 0; i < nc; i++) {
+                float * src1_ptr = (float *) ((char *) src1->data + j*nb11 + i*nb10);
+                dst_ptr[i] = GGML_FP32_TO_FP16(GGML_FP16_TO_FP32(src0_ptr[i]) + *src1_ptr);
+            }
         }
     }
+    else {
+        // src1 is not contiguous
+        GGML_ASSERT(false);
+    }
 }
 
 static void ggml_compute_forward_add_f16_f16(
@@ -5933,27 +5942,36 @@ static void ggml_compute_forward_add_f16_f16(
     const int n  = ggml_nrows(src0);
     const int nc = src0->ne[0];
 
-    //const size_t nb00 = src0->nb[0];
+    const size_t nb00 = src0->nb[0];
     const size_t nb01 = src0->nb[1];
 
     const size_t nb10 = src1->nb[0];
     const size_t nb11 = src1->nb[1];
 
-    //const size_t nb0 = dst->nb[0];
+    const size_t nb0 = dst->nb[0];
     const size_t nb1 = dst->nb[1];
 
     GGML_ASSERT(src0->type == GGML_TYPE_F16);
     GGML_ASSERT(src1->type == GGML_TYPE_F16);
     GGML_ASSERT(dst->type == GGML_TYPE_F16);
 
-    for (int j = ith; j < n; j += nth) {
-        ggml_fp16_t * dst_ptr  = (ggml_fp16_t *) ((char *) dst->data  + j*nb1);
-        ggml_fp16_t * src0_ptr = (ggml_fp16_t *) ((char *) src0->data + j*nb01);
-        for (int i = 0; i < nc; i++) {
-            ggml_fp16_t * src1_ptr = (ggml_fp16_t *) ((char *) src1->data + j*nb11 + i*nb10);
-            dst_ptr[i] = GGML_FP32_TO_FP16(GGML_FP16_TO_FP32(src0_ptr[i]) + GGML_FP16_TO_FP32(*src1_ptr));
+    GGML_ASSERT( nb0 == sizeof(ggml_fp16_t));
+    GGML_ASSERT(nb00 == sizeof(ggml_fp16_t));
+
+    if (nb10 == sizeof(ggml_fp16_t)) {
+        for (int j = ith; j < n; j += nth) {
+            ggml_fp16_t * dst_ptr  = (ggml_fp16_t *) ((char *) dst->data  + j*nb1);
+            ggml_fp16_t * src0_ptr = (ggml_fp16_t *) ((char *) src0->data + j*nb01);
+            for (int i = 0; i < nc; i++) {
+                ggml_fp16_t * src1_ptr = (ggml_fp16_t *) ((char *) src1->data + j*nb11 + i*nb10);
+                dst_ptr[i] = GGML_FP32_TO_FP16(GGML_FP16_TO_FP32(src0_ptr[i]) + GGML_FP16_TO_FP32(*src1_ptr));
+            }
         }
     }
+    else {
+        // src1 is not contiguous
+        GGML_ASSERT(false);
+    }
 }
 
 static void ggml_compute_forward_add_q_f32(