Hi Andreas, Thank you, that's what I was missing (now that I think about it, this requirement seems perfectly logical). Probably, it is worth adding something about it to reference entry for pycuda.driver.memcpy_htod_async().
Best regards, Bogdan On Sun, Oct 17, 2010 at 9:37 AM, Andreas Kloeckner <li...@informa.tiker.net> wrote: > On Sun, 3 Oct 2010 01:44:35 +1000, Bogdan Opanchuk <manti...@gmail.com> wrote: >> Hello all, >> >> I am getting LogicError from gpuarray.to_gpu_async() for some reason. Code: > > Any host memory involved in *_async() must be page-locked. FTFY: > > import pycuda.autoinit > import pycuda.driver as drv > import pycuda.gpuarray as gpuarray > import numpy > > a = numpy.random.randn(400).astype(numpy.float32) > a2 = drv.pagelocked_empty_like(a) > a2[:] = a > stream = drv.Stream() > a_gpu = gpuarray.to_gpu_async(a2, stream=stream) > > Andreas > _______________________________________________ PyCUDA mailing list PyCUDA@tiker.net http://lists.tiker.net/listinfo/pycuda
