moved accelerator to global

app.py

@@ -36,6 +36,7 @@ from pom.pianoroll import regroup_lines, img_file_2_midi_file, square_to_rect, r
 from pom.square_to_rect import square_to_rect
 
 zero = torch.Tensor([0]).cuda()  # used for gpu checking later
+accelerator = accelerate.Accelerator()
 
 CT_HOME = '.'
 
@@ -115,7 +116,6 @@ def process_image(image, repaint, busyness):
 
     print("CUDA check:")
     print("   zero.device = ",zero.device)
-    accelerator = accelerate.Accelerator()
     device = accelerator.device
     print('   accelerator.device:', device, flush=True)