From 57921ca6db53e08eb90010fba99add85be28b5a1 Mon Sep 17 00:00:00 2001
From: wzy <32936898+Freed-Wu@users.noreply.github.com>
Date: Sun, 23 Jul 2023 21:33:02 +0800
Subject: [PATCH] common : n_threads == -1 uses
 std::thread::hardware_concurrency() (#2347)

* Fix #2345, fix incorrect n_threads

* Update examples/common.cpp

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
---
 examples/common.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/common.cpp b/examples/common.cpp
index 5608ca87f..7a1928f2b 100644
--- a/examples/common.cpp
+++ b/examples/common.cpp
@@ -117,6 +117,9 @@ bool gpt_params_parse(int argc, char ** argv, gpt_params & params) {
                 break;
             }
             params.n_threads = std::stoi(argv[i]);
+            if (params.n_threads <= 0) {
+                params.n_threads = std::thread::hardware_concurrency();
+            }
         } else if (arg == "-p" || arg == "--prompt") {
             if (++i >= argc) {
                 invalid_param = true;