From 08febf55a1b2a07a53ddf7f349ac92c4cfe8383b Mon Sep 17 00:00:00 2001
From: nutellaBear <48599863+LalithShiyam@users.noreply.github.com>
Date: Fri, 29 Sep 2023 14:40:44 +0200
Subject: [PATCH] Update falconz.py

---
 falconz/falconz.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/falconz/falconz.py b/falconz/falconz.py
index 4c74483..3660d2a 100644
--- a/falconz/falconz.py
+++ b/falconz/falconz.py
@@ -209,8 +209,9 @@ def main():
     # choose start frame automatically if not specified
     if args.start_frame == 99:
         n_jobs = multiprocessing.cpu_count()
-        start_frame_file = determine_candidate_frames(candidate_frames, reference_file, falcon_dir,
-                                                      round(n_jobs * PROPORTION_OF_CORES))
+        # Calculate the number of cores to use, ensuring it's at least 1
+        actual_n_jobs = max(1, round(n_jobs * PROPORTION_OF_CORES))
+        start_frame_file = determine_candidate_frames(candidate_frames, reference_file, falcon_dir, actual_n_jobs)
         # find the index of the start_frame_file in the org_nifti_files list
         start_frame = org_nifti_files.index(start_frame_file)
     # everything from and after start_frame will be motion corrected and will be called moving frames