import ngsolve as ngs
ngs.__version__

'6.2.2307-7-gacaa2a3a3'

import numpy as np
import ngsolve.ngscuda as ncu

CUDA Device Query...
There is 1 CUDA device.
CUDA Device 0: Quadro RTX 5000, cap 7.5
Using device 0
Initializing cublas and cusparse.

n = 3
v = np.arange(n, dtype=float)
v

array([0., 1., 2.])

u = ncu.UnifiedVector(v)
print(u)

output unified vector of size 3, host = 1, dev = 0
       0
       1
       2

u.UpdateDevice()
print(u)

output unified vector of size 3, host = 1, dev = 1
       0
       1
       2

w = 2*u

we = w.Evaluate()
print(we)

we.UpdateHost()
print(we)

output unified vector of size 3, host = 0, dev = 1
host not up-to-data. printing device data
       0
       0
       0


output unified vector of size 3, host = 1, dev = 1
       0
       0
       0