msat  = 800e3
aex   = 13e-12
alpha = 0.01
c := 4e-9
setcellsize(c, c, c)
setsolver(2)

for e:=5; e<14; e++{
	n := pow(2, e)
	setgridsize(n, n, 1)
	print(n, "x", n)

	steps(1) // warm-up kernel

	b_ext = vector(0, 0.01, 0)
	m=uniform(1, 0, 0) // warm-up dt
	steps(3)

	m=uniform(1, 0, 0) // start!
	t = 0
	start := now()
	neval0 := Neval.get()

	steps(100)

	wall := since(start).Seconds() 
	nevl := Neval.get() - neval0
	N2 := n*n
	fprintln("benchmark.txt", N2, N2*nevl/wall, t/nevl)

}