CUDA Backend: Use blocking events to avoid 100% CPU core usage (per GPU)

4 years ago · 6a419d068c
parent fb448b6eb6
commit 6a419d068c
2 changed files with 3 additions and 2 deletions
--- a/docs/changes.txt
+++ b/docs/changes.txt
@ -27,6 +27,7 @@
 ##

 - Apple Keychain: Notify the user about the risk of collisions / false positives
+- CUDA Backend: Use blocking events to avoid 100% CPU core usage (per GPU)
 - Startup time: Improved the startup time by avoiding some time intensive operations for skipped devices

 ##
--- a/src/backend.c
+++ b/src/backend.c
@ -7831,9 +7831,9 @@ int backend_session_begin (hashcat_ctx_t *hashcat_ctx)

    if (device_param->is_cuda == true)
    {
-      if (hc_cuEventCreate (hashcat_ctx, &device_param->cuda_event1, CU_EVENT_DEFAULT) == -1) return -1;
+      if (hc_cuEventCreate (hashcat_ctx, &device_param->cuda_event1, CU_EVENT_BLOCKING_SYNC) == -1) return -1;

-      if (hc_cuEventCreate (hashcat_ctx, &device_param->cuda_event2, CU_EVENT_DEFAULT) == -1) return -1;
+      if (hc_cuEventCreate (hashcat_ctx, &device_param->cuda_event2, CU_EVENT_BLOCKING_SYNC) == -1) return -1;
    }

    /**