diff --git a/src/Util/util.cpp b/src/Util/util.cpp
index 6361cce4eaea6f5a56f0c9abac225cee640e2ea6..a34ebaba501aaee3ca67bf462b07aefc4ed7b4ee 100644
--- a/src/Util/util.cpp
+++ b/src/Util/util.cpp
@@ -503,6 +503,11 @@ bool setThreadAffinity(int i) {
     CPU_ZERO(&mask);
     if(i >= 0){
         CPU_SET(i, &mask);
+    } else {
+        auto cpus = thread::hardware_concurrency();
+        for (int i = 0; i < cpus; ++i) {
+            CPU_SET(i, &mask);
+        }
     }
     if (!pthread_setaffinity_np(pthread_self(), sizeof(mask), &mask)) {
         return true;