Dear OpenCL users, This issue is not directly related to pyopencl but rather to nvidia's OpenCL driver. I discovered that the the support for OpenCL is variable depending on the underlying hardware.
The typical example is the `enqueue_fill_buffer` from OpenCL which is used for the initialisation in pyopencl.array. This function is properly exposed in recent hardware (Kepler and newer) but not is elder Fermi cards (and we still have a cluster full of Tesla M2075) In [7]: ary = pyopencl.array.zeros(queue, (10,10), "float32") --------------------------------------------------------------------------- LogicError Traceback (most recent call last) <ipython-input-7-d85341757b00> in <module>() ----> 1 ary = pyopencl.array.zeros(queue, (10,10), "float32") /usr/lib/python3/dist-packages/pyopencl/array.py in zeros(queue, shape, dtype, order, allocator) 1973 result = Array(queue, shape, dtype, 1974 order=order, allocator=allocator) -> 1975 result._zero_fill() 1976 return result 1977 /usr/lib/python3/dist-packages/pyopencl/array.py in _zero_fill(self, queue, wait_for) 1190 self.add_event( 1191 cl.enqueue_fill_buffer(queue, self.base_data, np.int8(0), -> 1192 self.offset, self.nbytes, wait_for=wait_for)) 1193 else: 1194 zero = np.zeros((), self.dtype) /usr/lib/python3/dist-packages/pyopencl/__init__.py in enqueue_fill_buffer(queue, mem, pattern, offset, size, wait_for) 1850 pattern = np.asarray(pattern) 1851 -> 1852 return _cl._enqueue_fill_buffer(queue, mem, pattern, offset, size, wait_for) 1853 1854 # }}} LogicError: clEnqueueFillBuffer failed: INVALID_OPERATION The same "bug" occurs in the PoCL driver when addressing nvidia GPU, since the corresponding low-level primitive is absent in NVVM. I wonder if we should best address this issue within our code or it could be addressed at a higher level. Getting from nvidia that they fix their code to conform for the specification is an illusion. But does it make sense to address this as part of pyopencl ? If so, I am willing to contribute with a patch. Thanks for your advice, Cheers, Jerome _______________________________________________ PyOpenCL mailing list -- pyopencl@tiker.net To unsubscribe send an email to pyopencl-le...@tiker.net
