metal : mul/div opt

Author: ggerganov

ggml/src/ggml-metal/ggml-metal.m

@@ -3950,7 +3950,7 @@ static int ggml_metal_encode_node(
                         [encoder setBuffer:id_src2 offset:offs_src2    atIndex:1];
                         [encoder setBuffer: h_tpe  offset:0            atIndex:2];
                         [encoder setBuffer: h_ids  offset:0            atIndex:3];
-                        [encoder setThreadgroupMemoryLength:ne02*ne20*sizeof(uint16_t) atIndex:0];
+                        [encoder setThreadgroupMemoryLength:smem atIndex:0];
 
                         [encoder dispatchThreadgroups:MTLSizeMake(1, 1, 1) threadsPerThreadgroup:MTLSizeMake(ne02, 1, 1)];
                     }

ggml/src/ggml-metal/ggml-metal.metal

@@ -974,9 +974,16 @@ kernel void kernel_mul(
     device const char * src1_ptr = src1 + i13*args.nb13 + i12*args.nb12 + i11*args.nb11 + args.o1[0];
     device       char * dst_ptr  = dst  + i03*args.nb3  + i02*args.nb2  + i01*args.nb1  + args.offs;
 
-    for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
-        const int i10 = i0%args.ne10;
-        *((device float *)(dst_ptr + i0*args.nb0)) = *((device float *)(src0_ptr + i0*args.nb00)) * *((device float *)(src1_ptr + i10*args.nb10));
+    if (args.ne10 == 1) {
+        const float x = *((device float *)(src1_ptr));
+        for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
+            *((device float *)(dst_ptr + i0*args.nb0)) = *((device float *)(src0_ptr + i0*args.nb00)) * x;
+        }
+    } else {
+        for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
+            const int i10 = i0%args.ne10;
+            *((device float *)(dst_ptr + i0*args.nb0)) = *((device float *)(src0_ptr + i0*args.nb00)) * *((device float *)(src1_ptr + i10*args.nb10));
+        }
     }
 }
 
@@ -1000,9 +1007,16 @@ kernel void kernel_div(
     device const char * src1_ptr = src1 + i13*args.nb13 + i12*args.nb12 + i11*args.nb11 + args.o1[0];
     device       char * dst_ptr  = dst  + i03*args.nb3  + i02*args.nb2  + i01*args.nb1  + args.offs;
 
-    for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
-        const int i10 = i0%args.ne10;
-        *((device float *)(dst_ptr + i0*args.nb0)) = *((device float *)(src0_ptr + i0*args.nb00)) / *((device float *)(src1_ptr + i10*args.nb10));
+    if (args.ne10 == 1) {
+        const float x = 1.0f / *((device float *)(src1_ptr));
+        for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
+            *((device float *)(dst_ptr + i0*args.nb0)) = *((device float *)(src0_ptr + i0*args.nb00)) * x;
+        }
+    } else {
+        for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
+            const int i10 = i0%args.ne10;
+            *((device float *)(dst_ptr + i0*args.nb0)) = *((device float *)(src0_ptr + i0*args.nb00)) / *((device float *)(src1_ptr + i10*args.nb10));
+        }
     }
 }