theano GPU convolution error

gistfile1.py

Error freeing device pointer 0x200800000 (the launch timed out and was terminated).
!!!! error freeing device memory 0x200800000 (self=0xa64f270)
Error freeing device pointer 0x200302400 (the launch timed out and was terminated).
!!!! error freeing dev_structure memory 0x200302400 (self=0xa64f270)
---------------------------------------------------------------------------
MemoryError                               Traceback (most recent call last)
/usr/lib/python2.7/site-packages/IPython/utils/py3compat.pyc in execfile(fname, *where)
    173             else:
    174                 filename = fname
--> 175             __builtin__.execfile(filename, *where)

/home/sander/projects/sequences/feature_extraction_hierarchy.py in <module>()
    109     print "  chunk %d" % j
    110     print "    compute"
--> 111     computed_features = compute_features(chunk)
    112     print "    store"
    113     features_ds[j*chunk_size:(j+1)*chunk_size] = computed_features

/home/sander/python_modules/theano/compile/function_module.pyc in __call__(self, *args, **kwargs)
    641         t0_fn = time.time()
    642         try:
--> 643             outputs = self.fn()
    644         except Exception:
    645             if hasattr(self.fn, 'position_of_error'):

/home/sander/python_modules/theano/gof/link.pyc in streamline_default_f()
    342                         old_s[0] = None
    343             except Exception:
--> 344                 raise_with_op(node)
    345         f = streamline_default_f
    346     elif nice_errors:

/home/sander/python_modules/theano/gof/link.pyc in streamline_default_f()
    338             try:
    339                 for thunk, node, old_storage in zip(thunks, order, post_thunk_old_storage):
--> 340                     thunk()
    341                     for old_s in old_storage:
    342                         old_s[0] = None

/home/sander/python_modules/theano/gof/op.pyc in rval()
    579                 def rval():
    580                     fill_storage()
--> 581                     for o in node.outputs:
    582                         compute_map[o][0] = True
    583 

MemoryError: error freeing device pointer 0x200302400 (the launch timed out and was terminated)