Update bytes to GB with bitshift (#6886)

utils/__init__.py

@@ -21,14 +21,13 @@ def notebook_init(verbose=True):
     if is_colab():
         shutil.rmtree('/content/sample_data', ignore_errors=True)  # remove colab /sample_data directory
 
+    # System info
     if verbose:
-        # System info
-        # gb = 1 / 1000 ** 3  # bytes to GB
-        gib = 1 / 1024 ** 3  # bytes to GiB
+        gb = 1 << 30  # bytes to GiB (1024 ** 3)
         ram = psutil.virtual_memory().total
         total, used, free = shutil.disk_usage("/")
         display.clear_output()
-        s = f'({os.cpu_count()} CPUs, {ram * gib:.1f} GB RAM, {(total - free) * gib:.1f}/{total * gib:.1f} GB disk)'
+        s = f'({os.cpu_count()} CPUs, {ram / gb:.1f} GB RAM, {(total - free) / gb:.1f}/{total / gb:.1f} GB disk)'
     else:
         s = ''