Ejemplo n.º 1
0
func ExampleFFT1D() {
	N := 8

	hostIn := make([]float32, N)
	hostIn[0] = 1

	devIn := cu.MemAlloc(int64(len(hostIn)) * cu.SIZEOF_FLOAT32)
	defer cu.MemFree(devIn)
	cu.MemcpyHtoD(devIn, unsafe.Pointer(&hostIn[0]), devIn.Bytes())

	hostOut := make([]complex64, N/2+1)
	devOut := cu.MemAlloc(int64(len(hostOut)) * cu.SIZEOF_COMPLEX64)
	defer cu.MemFree(devOut)

	plan := Plan1d(N, R2C, 1)
	defer plan.Destroy()
	plan.ExecR2C(devIn, devOut)

	cu.MemcpyDtoH(unsafe.Pointer(&hostOut[0]), devOut, devOut.Bytes())

	fmt.Println("hostIn:", hostIn)
	fmt.Println("hostOut:", hostOut)

	// Output:
	// hostIn: [1 0 0 0 0 0 0 0]
	// hostOut: [(1+0i) (1+0i) (1+0i) (1-0i) (1+0i)]
}
Ejemplo n.º 2
0
// Frees the GPU memory and disables the slice.
func (b *Bytes) Free() {
	if b.Ptr != nil {
		cu.MemFree(cu.DevicePtr(uintptr(b.Ptr)))
	}
	b.Ptr = nil
	b.Len = 0
}
Ejemplo n.º 3
0
func memFree(ptr unsafe.Pointer) { cu.MemFree(cu.DevicePtr(uintptr(ptr))) }