Hi all,
I'm doing some experiments on paged-locked memory, but got some errors that I
failed to address when I use aligned memory to invoke the kernel function.
My code is like below:
1 import pycuda.driver as drv
2 import autoinit
3
4 temp = drv.aligned_empty(my_numpy_array.shape, dtype=my_numpy_array.dtype,
order='C')
5 temp = drv.register_host_memory( temp,
flags=drv.mem_host_register_flags.DEVICEMAP)
6 my_plptr = numpy.intp(temp.base.get_device_pointer())
7
8 start_event.record()
9 kernel_function( my_plptr, rest_parameters, block, grid)
10 end_event.record()
11 end_event.synchronize()
But when executing, it reports error saying
Traceback (most recent call last):
end.synchronize()
pycuda._driver.LaunchError: cuEventSynchronize failed: launch failed
PyCUDA WARNING: a clean-up operation failed (dead context maybe?)
cuMemFree failed: launch failed
This code https://gist.github.com/4036292 works good on the same machine.
Thanks.
John
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