Failure using @glouppe's cytomine scikit-learn RF shared memory implementation

Error.txt

In [7]: rf = RandomForestClassifier(100, max_depth=20, n_jobs=8, shared=True, compute_importances=True)

In [8]: rf = rf.fit(dat5[0], dat5[1][:, 0])
---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
/groups/chklovskii/home/nuneziglesiasj/data/cropped_5um3_larva_fib_10x10x10nm/cl2/<ipython-input-8-16d0d527a259> in <module>()
----> 1 rf = rf.fit(dat5[0], dat5[1][:, 0])

/groups/chklovskii/home/nuneziglesiasj/projects/scikit-learn-sharedmem/sklearn/ensemble/forest.pyc in fit(self, X, y)
    273         # Pack inputs into shared-memory arrays

    274         if self.shared:
--> 275             _X = shm.zeros(X.shape, X.dtype, "F")
    276             _X[:] = X[:]
    277             X = _X

/usr/lib64/python2.7/site-packages/sharedmem/array.pyc in shared_zeros(shape, dtype, order)
    133     """ Create a shared-memory ndarray filled with 0s.
    134     """
--> 135     arr = shared_empty(shape, dtype, order)
    136     x = np.zeros((), arr.dtype)
    137     arr[...] = x

/usr/lib64/python2.7/site-packages/sharedmem/array.pyc in shared_empty(shape, dtype, order)
    124     size = int(np.prod(shape))
    125     nbytes = size * dtype.itemsize
--> 126     wrapper = heap.BufferWrapper(nbytes)
    127     strides = None
    128     offset = 0

/usr/lib64/python2.7/site-packages/sharedmem/heap.pyc in __init__(self, size)
     64     def __init__(self, size):
     65         self.size = size
---> 66         self.offset, self.buf = _heap.allocate(size)
     67 
     68     def __setstate__(self, _state):

/usr/lib64/python2.7/site-packages/sharedmem/heap.pyc in allocate(self, size)
     51         with self.lock:
     52             if size > mmap.PAGESIZE:
---> 53                 offset, buf = self._allocate_big(size)
     54             else:
     55                 offset, buf = self._allocate_tiny(size)

/usr/lib64/python2.7/site-packages/sharedmem/heap.pyc in _allocate_big(self, size)
     43 
     44     def _allocate_big(self, size):
---> 45         buf = SharedMemoryBuffer(size)
     46         addr, _ = buf.getbuffer()
     47         return 0, buf

/usr/lib64/python2.7/site-packages/sharedmem/sharedmemory_sysv.so in sharedmem.sharedmemory_sysv.SharedMemoryBuffer.__init__ (sharedmem/sharedmemory_sysv.c:1300)()

OSError: Failed to open shared memory