Hi, all*. *I have a problem using pagelocked memory. I allocated one with pagelocked_xxx or PageLockedMemoryPool, but how can I pass it into a kernel? I put a simple code below. What should "aa" be? aa = pycuda.driver.Out(a) works just fine, but I guess it involves a copy. Thanks, Daisuke ##CODE START###################### k = pycuda.compiler.SourceModule(""" __global__ void krnl(float* a) { int i = blockIdx.x * blockDim.x + threadIdx.x; a[i] = i; } """).get_function("krnl") a = pycuda.driver.pagelocked_empty((10, 10), numpy.float32) aa = ?? k(aa, grid=(100,1), block=(1,1,1)) ##CODE END###################### -- Daisuke Nishino