16   PetscDeviceContext dctx;  in main()  local
32   PetscCall(PetscDeviceContextGetCurrentContext(&dctx));  in main()
36   PetscCall(PetscDeviceMalloc(dctx, PETSC_MEMTYPE_HOST, n2, &xh));  in main()
37   PetscCall(PetscDeviceMalloc(dctx, PETSC_MEMTYPE_HOST, n2, &yh));  in main()
38   PetscCall(PetscDeviceMalloc(dctx, PETSC_MEMTYPE_DEVICE, n2, &xd));  in main()
39   PetscCall(PetscDeviceMalloc(dctx, PETSC_MEMTYPE_DEVICE, n2, &yd));  in main()
45   PetscCall(PetscDeviceMemcpy(dctx, xd, xh, sizeof(PetscInt) * n2));  in main()
46   PetscCall(PetscDeviceMemcpy(dctx, yd, yh, sizeof(PetscInt) * n2));  in main()
50   PetscCall(PetscDeviceMemcpy(dctx, yh, yd, sizeof(PetscInt) * n));  in main()
51   PetscCall(PetscDeviceContextSynchronize(dctx)); // finish the async memcpy  in main()
56   PetscCall(PetscDeviceMemcpy(dctx, xh, xd, sizeof(PetscInt) * n2));  in main()
57   PetscCall(PetscDeviceContextSynchronize(dctx)); // finish the async memcpy  in main()
60   PetscCall(PetscDeviceFree(dctx, xh));  in main()
61   PetscCall(PetscDeviceFree(dctx, yh));  in main()
62   PetscCall(PetscDeviceFree(dctx, xd));  in main()
63   PetscCall(PetscDeviceFree(dctx, yd));  in main()