1 files changed, 3 insertions, 2 deletions
diff --git a/sim.py b/sim.py
index 2d772bb..fce559e 100755
--- a/sim.py
+++ b/sim.py
@@ -23,7 +23,8 @@ def pick_seed():
 
 class Simulation(object):
     def __init__(self, detector, detector_material, 
-                 seed=None, cuda_device=None, geant4_processes=4, bvh_bits=11):
+                 seed=None, cuda_device=None, geant4_processes=4, bvh_bits=11,
+                 use_cache=True):
         self.detector = detector
 
         if seed is None:
@@ -44,7 +45,7 @@ class Simulation(object):
             self.photon_generator = None
 
         print >>sys.stderr, 'Creating BVH with %d bits...' % (bvh_bits)
-        detector.build(bits=bvh_bits)
+        detector.build(bits=bvh_bits, use_cache=use_cache)
         
         print >>sys.stderr, 'Initializing GPU...'
         self.gpu_worker = gpu.GPU(cuda_device)