diff --git a/.github/workflows/run_pr_tests.yml b/.github/workflows/run_pr_tests.yml
index b14e138b4..c84752cfe 100644
--- a/.github/workflows/run_pr_tests.yml
+++ b/.github/workflows/run_pr_tests.yml
@@ -22,6 +22,7 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
+# added a comment here to force a workflow run.
 jobs:
 
   # build and run host x86_64, execute UnitCL and lit tests and build and run offline
diff --git a/clik/external/hal_cpu/source/cpu_hal.cpp b/clik/external/hal_cpu/source/cpu_hal.cpp
index 2f756ee1e..bb859b9b3 100644
--- a/clik/external/hal_cpu/source/cpu_hal.cpp
+++ b/clik/external/hal_cpu/source/cpu_hal.cpp
@@ -314,8 +314,8 @@ bool cpu_hal::kernel_exec(hal::hal_program_t program, hal::hal_kernel_t kernel,
   size_t num_threads = work_group_size;
 #else
 #error HAL_CPU_MODE must be HAL_CPU_MODE_WG or HAL_CPU_MODE_WI.
-#endif
-
+#endif  
+  printf("Num threads = %d\n", (int) num_threads);
   std::vector<exec_state_t> exec_for_thread(num_threads);
   exec.num_threads = num_threads;
   for (size_t thread_id = 0; thread_id < num_threads; thread_id++) {