ggml : sync ggml core (minor additions, e.g. ggml_get_tensor_by_name())

ggml.c

@@ -3494,7 +3494,7 @@ static bool GGML_IS_QUANTIZED[GGML_TYPE_COUNT] = {
 };
 static_assert(GGML_TYPE_COUNT == 13, "GGML_IS_QUANTIZED is outdated");
 
-static const char * GGML_OP_LABEL[GGML_OP_COUNT] = {
+static const char * GGML_OP_NAME[GGML_OP_COUNT] = {
     "NONE",
 
     "DUP",
@@ -3749,6 +3749,9 @@ const char * ggml_type_name(enum ggml_type type) {
     return GGML_TYPE_NAME[type];
 }
 
+const char * ggml_op_name(enum ggml_op op) {
+    return GGML_OP_NAME[op];
+}
 
 size_t ggml_element_size(const struct ggml_tensor * tensor) {
     return GGML_TYPE_SIZE[tensor->type];
@@ -4017,6 +4020,10 @@ size_t ggml_set_scratch(struct ggml_context * ctx, struct ggml_scratch scratch)
     return result;
 }
 
+void ggml_set_no_alloc(struct ggml_context * ctx, bool no_alloc) {
+    ctx->no_alloc = no_alloc;
+}
+
 // IMPORTANT:
 // when creating "opt" tensors, always save and load the scratch buffer
 // this is an error prone process, but it is necessary to support inplace
@@ -4061,7 +4068,7 @@ struct ggml_tensor * ggml_new_tensor_impl(
     struct ggml_object * const obj_new = (struct ggml_object *)(mem_buffer + cur_end);
 
     if (ctx->scratch.data == NULL || data != NULL) {
-        size_needed += sizeof(struct ggml_tensor);
+        size_needed += GGML_TENSOR_SIZE;
 
         if (cur_end + size_needed + GGML_OBJECT_SIZE > ctx->mem_size) {
             GGML_PRINT("%s: not enough space in the context's memory pool (needed %zu, available %zu)\n",
@@ -4077,14 +4084,15 @@ struct ggml_tensor * ggml_new_tensor_impl(
         };
     } else {
         if (ctx->scratch.offs + size_needed > ctx->scratch.size) {
-            GGML_PRINT("%s: not enough space in the scratch memory\n", __func__);
+            GGML_PRINT("%s: not enough space in the scratch memory pool (needed %zu, available %zu)\n",
+                    __func__, ctx->scratch.offs + size_needed, ctx->scratch.size);
             assert(false);
             return NULL;
         }
 
-        if (cur_end + sizeof(struct ggml_tensor) + GGML_OBJECT_SIZE > ctx->mem_size) {
+        if (cur_end + GGML_TENSOR_SIZE + GGML_OBJECT_SIZE > ctx->mem_size) {
             GGML_PRINT("%s: not enough space in the context's memory pool (needed %zu, available %zu)\n",
-                    __func__, cur_end + sizeof(struct ggml_tensor) + GGML_OBJECT_SIZE, ctx->mem_size);
+                    __func__, cur_end + GGML_TENSOR_SIZE + GGML_OBJECT_SIZE, ctx->mem_size);
             assert(false);
             return NULL;
         }
@@ -4093,7 +4101,7 @@ struct ggml_tensor * ggml_new_tensor_impl(
 
         *obj_new = (struct ggml_object) {
             .offs = cur_end + GGML_OBJECT_SIZE,
-            .size = sizeof(struct ggml_tensor),
+            .size = GGML_TENSOR_SIZE,
             .next = NULL,
         };
 
@@ -13792,11 +13800,19 @@ static void ggml_visit_parents(struct ggml_cgraph * cgraph, struct ggml_tensor *
         // reached a leaf node, not part of the gradient graph (e.g. a constant)
         GGML_ASSERT(cgraph->n_leafs < GGML_MAX_NODES);
 
+        if (strlen(node->name) == 0) {
+            snprintf(node->name, sizeof(node->name), "leaf_%d", cgraph->n_leafs);
+        }
+
         cgraph->leafs[cgraph->n_leafs] = node;
         cgraph->n_leafs++;
     } else {
         GGML_ASSERT(cgraph->n_nodes < GGML_MAX_NODES);
 
+        if (strlen(node->name) == 0) {
+            snprintf(node->name, sizeof(node->name), "node_%d", cgraph->n_nodes);
+        }
+
         cgraph->nodes[cgraph->n_nodes] = node;
         cgraph->grads[cgraph->n_nodes] = node->grad;
         cgraph->n_nodes++;
@@ -14510,6 +14526,18 @@ void ggml_graph_reset(struct ggml_cgraph * cgraph) {
     }
 }
 
+struct ggml_tensor * ggml_get_tensor_by_name(struct ggml_cgraph * cgraph, const char * name) {
+    for (int i = 0; i < cgraph->n_nodes; i++) {
+        struct ggml_tensor * node = cgraph->nodes[i];
+
+        if (strcmp(node->name, name) == 0) {
+            return node;
+        }
+    }
+
+    return NULL;
+}
+
 void ggml_graph_print(const struct ggml_cgraph * cgraph) {
     int64_t perf_total_per_op_us[GGML_OP_COUNT] = {0};
 
@@ -14527,7 +14555,7 @@ void ggml_graph_print(const struct ggml_cgraph * cgraph) {
         GGML_PRINT(" - %3d: [ %5" PRId64 ", %5" PRId64 ", %5" PRId64 "] %16s %s (%3d) cpu = %7.3f / %7.3f ms, wall = %7.3f / %7.3f ms\n",
                 i,
                 node->ne[0], node->ne[1], node->ne[2],
-                GGML_OP_LABEL[node->op], node->is_param ? "x" : node->grad ? "g" : " ", node->perf_runs,
+                GGML_OP_NAME[node->op], node->is_param ? "x" : node->grad ? "g" : " ", node->perf_runs,
                 (double) node->perf_cycles  / (double) ggml_cycles_per_ms(),
                 (double) node->perf_cycles  / (double) ggml_cycles_per_ms() / (double) node->perf_runs,
                 (double) node->perf_time_us / 1000.0,
@@ -14541,7 +14569,7 @@ void ggml_graph_print(const struct ggml_cgraph * cgraph) {
         GGML_PRINT(" - %3d: [ %5" PRId64 ", %5" PRId64 "] %8s\n",
                 i,
                 node->ne[0], node->ne[1],
-                GGML_OP_LABEL[node->op]);
+                GGML_OP_NAME[node->op]);
     }
 
     for (int i = 0; i < GGML_OP_COUNT; i++) {
@@ -14549,7 +14577,7 @@ void ggml_graph_print(const struct ggml_cgraph * cgraph) {
             continue;
         }
 
-        GGML_PRINT("perf_total_per_op_us[%16s] = %7.3f ms\n", GGML_OP_LABEL[i], (double) perf_total_per_op_us[i] / 1000.0);
+        GGML_PRINT("perf_total_per_op_us[%16s] = %7.3f ms\n", GGML_OP_NAME[i], (double) perf_total_per_op_us[i] / 1000.0);
     }
 
     GGML_PRINT("========================================\n");

ggml.h

@@ -198,6 +198,7 @@
 #define GGML_MAX_PARAMS        256
 #define GGML_MAX_CONTEXTS      64
 #define GGML_MAX_OPT           4
+#define GGML_MAX_NAME          32
 #define GGML_DEFAULT_N_THREADS 4
 
 #define GGML_ASSERT(x) \
@@ -372,11 +373,16 @@ extern "C" {
 
         void * data;
 
-        char name[32];
+        char name[GGML_MAX_NAME];
 
         char padding[16];
     };
 
+    static const size_t GGML_TENSOR_SIZE = sizeof(struct ggml_tensor);
+
+    // use this to compute the memory overhead of a tensor
+    static const size_t GGML_TENSOR_OVERHEAD = (GGML_OBJECT_SIZE + GGML_TENSOR_SIZE + 16);
+
     // computation graph
     struct ggml_cgraph {
         int n_nodes;
@@ -429,6 +435,7 @@ extern "C" {
     GGML_API float   ggml_type_sizef(enum ggml_type type); // ggml_type_size()/ggml_blck_size() as float
 
     GGML_API const char * ggml_type_name(enum ggml_type type);
+    GGML_API const char * ggml_op_name  (enum ggml_op   op);
 
     GGML_API size_t  ggml_element_size(const struct ggml_tensor * tensor);
 
@@ -445,6 +452,7 @@ extern "C" {
     GGML_API size_t  ggml_used_mem(const struct ggml_context * ctx);
 
     GGML_API size_t  ggml_set_scratch(struct ggml_context * ctx, struct ggml_scratch scratch);
+    GGML_API void    ggml_set_no_alloc(struct ggml_context * ctx, bool no_alloc);
 
     GGML_API struct ggml_tensor * ggml_new_tensor(
             struct ggml_context * ctx,
@@ -970,6 +978,8 @@ extern "C" {
     GGML_API void ggml_graph_compute(struct ggml_context * ctx, struct ggml_cgraph * cgraph);
     GGML_API void ggml_graph_reset  (struct ggml_cgraph * cgraph);
 
+    GGML_API struct ggml_tensor * ggml_get_tensor_by_name(struct ggml_cgraph * cgraph, const char * name);
+
     // print info and performance information for the graph
     GGML_API void ggml_graph_print(const struct ggml_cgraph * cgraph);