cmdline option for custom amount of model parts (--n_parts N) (#348)

* cmdline option for custom amount of model parts (--n_parts N)

* Update main.cpp

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/main.cpp b/main.cpp
index e97611e..662a2a7 100644
--- a/main.cpp
+++ b/main.cpp
@@ -90,7 +90,8 @@ struct llama_model {
 };
 
 // load the model's weights from a file
-bool llama_model_load(const std::string & fname, llama_model & model, llama_vocab & vocab, int n_ctx, ggml_type memory_type = GGML_TYPE_F32) {
+
+bool llama_model_load(const std::string & fname, llama_model & model, llama_vocab & vocab, int n_ctx, int n_parts, ggml_type memory_type = GGML_TYPE_F32) {
     fprintf(stderr, "%s: loading model from '%s' - please wait ...\n", __func__, fname.c_str());
 
     std::vector<char> f_buf(1024*1024);
@@ -127,7 +128,6 @@ bool llama_model_load(const std::string & fname, llama_model & model, llama_voca
     }
 
     int n_ff = 0;
-    int n_parts = 0;
 
     // load hparams
     {
@@ -145,7 +145,10 @@ bool llama_model_load(const std::string & fname, llama_model & model, llama_voca
         hparams.n_ctx = n_ctx;
 
         n_ff = ((2*(4*hparams.n_embd)/3 + hparams.n_mult - 1)/hparams.n_mult)*hparams.n_mult;
-        n_parts = LLAMA_N_PARTS.at(hparams.n_embd);
+
+        if (n_parts < 1) {
+            n_parts = LLAMA_N_PARTS.at(hparams.n_embd);
+        }
 
         fprintf(stderr, "%s: n_vocab = %d\n", __func__, hparams.n_vocab);
         fprintf(stderr, "%s: n_ctx   = %d\n", __func__, hparams.n_ctx);
@@ -839,7 +842,7 @@ int main(int argc, char ** argv) {
     {
         const ggml_type memory_type = params.memory_f16 ? GGML_TYPE_F16 : GGML_TYPE_F32;
         const int64_t t_start_us = ggml_time_us();
-        if (!llama_model_load(params.model, model, vocab, params.n_ctx, memory_type)) {
+        if (!llama_model_load(params.model, model, vocab, params.n_ctx, params.n_parts, memory_type)) {
             fprintf(stderr, "%s: failed to load model from '%s'\n", __func__, params.model.c_str());
             return 1;
         }