diff options
Diffstat (limited to 'llama.cpp')
| -rw-r--r-- | llama.cpp | 67 |
1 files changed, 41 insertions, 26 deletions
@@ -2040,6 +2040,11 @@ struct llama_model { ggml_free(ctx); } for (ggml_backend_buffer_t buf : bufs) { +#ifdef GGML_USE_CUBLAS + if (ggml_backend_buffer_get_type(buf) == ggml_backend_cpu_buffer_type()) { + ggml_backend_cuda_unregister_host_buffer(ggml_backend_buffer_get_base(buf)); + } +#endif ggml_backend_buffer_free(buf); } } @@ -5033,6 +5038,13 @@ static bool llm_load_tensors( size_t first, last; ml.get_mapping_range(&first, &last, ctx); buf = ggml_backend_cpu_buffer_from_ptr((char *) ml.mapping->addr + first, last - first); +#ifdef GGML_USE_CUBLAS + if (n_layer >= n_gpu_layers) { + ggml_backend_cuda_register_host_buffer( + ggml_backend_buffer_get_base(buf), + ggml_backend_buffer_get_size(buf)); + } +#endif } #ifdef GGML_USE_METAL else if (ml.use_mmap && buft == ggml_backend_metal_buffer_type()) { @@ -8231,7 +8243,6 @@ struct llm_build_context { cur = llm_build_kv(ctx0, model, hparams, kv_self, gf, model.layers[il].wo, model.layers[il].bo, Kcur, Vcur, Qcur, KQ_mask, nullptr, n_ctx, n_tokens, kv_head, n_kv, 1.0f/sqrtf(float(n_embd_head)), cb, il); - cb(cur, "kqv_out", il); } struct ggml_tensor * ffn_inp = ggml_add(ctx0, cur, inpSA); @@ -8601,12 +8612,15 @@ static struct ggml_cgraph * llama_build_graph( } // norm may be automatically assigned to the backend of the previous layer, increasing data transfer between backends - // to fix this, we assign the norm layer manually to the backend of its layer - if (il != -1 && strcmp(name, "norm") == 0) { - for (auto * backend : lctx.backends) { - if (ggml_backend_buft_supports_backend(lctx.model.buft_layer[il].buft, backend)) { - ggml_backend_sched_set_tensor_backend(lctx.sched, cur, backend); - break; + // FIXME: fix in ggml_backend_sched + const bool full_offload = lctx.model.n_gpu_layers > (int)lctx.model.hparams.n_layer; + if (batch.n_tokens < 32 || full_offload) { + if (il != -1 && strcmp(name, "norm") == 0) { + for (auto * backend : lctx.backends) { + if (ggml_backend_buft_supports_backend(lctx.model.buft_layer[il].buft, backend)) { + ggml_backend_sched_set_tensor_backend(lctx.sched, cur, backend); + break; + } } } } @@ -13107,27 +13121,25 @@ struct llama_context * llama_new_context_with_model( ctx->backends.push_back(ctx->backend_metal); } #elif defined(GGML_USE_CUBLAS) - if (model->n_gpu_layers > 0) { + if (model->split_mode == LLAMA_SPLIT_MODE_NONE || model->split_mode == LLAMA_SPLIT_MODE_ROW) { // with split_mode LLAMA_SPLIT_MODE_NONE or LLAMA_SPLIT_MODE_ROW, only the main GPU backend is used - if (model->split_mode == LLAMA_SPLIT_MODE_NONE || model->split_mode == LLAMA_SPLIT_MODE_ROW) { - ggml_backend_t backend = ggml_backend_cuda_init(model->main_gpu); + ggml_backend_t backend = ggml_backend_cuda_init(model->main_gpu); + if (backend == nullptr) { + LLAMA_LOG_ERROR("%s: failed to initialize CUDA%d backend\n", __func__, model->main_gpu); + llama_free(ctx); + return nullptr; + } + ctx->backends.push_back(backend); + } else { + // LLAMA_SPLIT_MODE_LAYER requires a backend for each GPU + for (int device = 0; device < ggml_backend_cuda_get_device_count(); ++device) { + ggml_backend_t backend = ggml_backend_cuda_init(device); if (backend == nullptr) { - LLAMA_LOG_ERROR("%s: failed to initialize CUDA%d backend\n", __func__, model->main_gpu); + LLAMA_LOG_ERROR("%s: failed to initialize CUDA%d backend\n", __func__, device); llama_free(ctx); return nullptr; } ctx->backends.push_back(backend); - } else { - // LLAMA_SPLIT_MODE_LAYER requires a backend for each GPU - for (int device = 0; device < ggml_backend_cuda_get_device_count(); ++device) { - ggml_backend_t backend = ggml_backend_cuda_init(device); - if (backend == nullptr) { - LLAMA_LOG_ERROR("%s: failed to initialize CUDA%d backend\n", __func__, device); - llama_free(ctx); - return nullptr; - } - ctx->backends.push_back(backend); - } } } #elif defined(GGML_USE_VULKAN) @@ -13285,14 +13297,17 @@ struct llama_context * llama_new_context_with_model( ggml_backend_t backend = ctx->backends[i]; ggml_backend_buffer_type_t buft = backend_buft[i]; size_t size = ggml_backend_sched_get_buffer_size(ctx->sched, backend); - LLAMA_LOG_INFO("%s: %10s compute buffer size = %8.2f MiB\n", __func__, - ggml_backend_buft_name(buft), - size / 1024.0 / 1024.0); + if (size > 1) { + LLAMA_LOG_INFO("%s: %10s compute buffer size = %8.2f MiB\n", __func__, + ggml_backend_buft_name(buft), + size / 1024.0 / 1024.0); + } } // note: the number of splits during measure is higher than during inference due to the kv shift int n_splits = ggml_backend_sched_get_n_splits(ctx->sched); - LLAMA_LOG_INFO("%s: graph splits: %d\n", __func__, n_splits); + LLAMA_LOG_INFO("%s: graph nodes = %d\n", __func__, gf->n_nodes); + LLAMA_LOG_INFO("%s: graph splits = %d\n", __func__, n_splits); } } |