sync : ggml (backend v2) (#3912)

* sync : ggml (backend v2) (wip)

* sync : migrate examples and llama.cpp to dynamic graphs (wip)

* sync : update tests + fix max op params to 64

ggml-ci

* sync : ggml-cuda

ggml-ci

* llama : fix save/load state context size

ggml-ci

* sync : try to fix build on tvOS

* sync : pass custom graph sizes in training examples

* sync : update graph copies to new ggml API

* sync : update sync-ggml.sh with new files

* scripts : fix header in sync script

* train : fix context size calculations

* llama : increase inference graph size up to 4096 nodes

* train : allocate grads for backward graphs

* train : allocate grads for gb_tmp

1 files changed, 4 insertions, 3 deletions

diff --git a/tests/test-grad0.cpp b/tests/test-grad0.cpp
index 0a559b27..7fe9154d 100644
--- a/tests/test-grad0.cpp
+++ b/tests/test-grad0.cpp
@@ -231,9 +231,10 @@ static bool check_gradient(
         printf("GGML_N_THREADS = %d\n", n_threads);
     }
 
-    struct ggml_cgraph * gf = ggml_build_forward_ctx(ctx0, f);
-    struct ggml_cgraph * gb = ggml_new_graph(ctx0);
-    *gb = *gf;
+    struct ggml_cgraph * gf = ggml_new_graph_custom(ctx0, GGML_DEFAULT_GRAPH_SIZE, true);
+    struct ggml_cgraph * gb = ggml_new_graph_custom(ctx0, GGML_DEFAULT_GRAPH_SIZE, true);
+    ggml_build_forward_expand(gf, f);
+    ggml_graph_cpy(gf, gb);
     ggml_build_backward_expand(ctx0, gf, gb, false);
 
     ggml_graph_compute_with_ctx(ctx0, gf, n_threads);