Hi Simon,
Here is an example which is unfortunately a bit too long for the 7-lines thread…
Anyway, It takes about 5s on my machine to run and show a rather convincing combination of CUDA.jl and Makie.jl.
In the plot (can be heatmap or surface), I copy the CuArray zs to a standard Array czs…
using CUDA,GLMakie,AbstractPlotting
const T=Float32
const V=CuArray{T,2}
function go()
CUDA.allowscalar(false)
ls,ns,ms,λ,dt,sr,k,nt,two,eight,fr =1.e-2,800,1.e-4,0.1,2.e-7,0.1,5e7,5000,T(2),T(8),10
dt2sm=dt^2/ms
r,r0,r1,r2=1:ns,1:ns-2,2:ns-1,3:ns
cxs = [T(j-1)*ls for i in r, j in r]
dx(i,j) = cxs[i,j]-cxs[ns÷2,ns÷2]
cxc = [cxs[i,j]+sr*(dx(i,j))*exp(-0.5(dx(i,j)^2+dx(j,i)^2)/λ^2)/λ for i in r, j in r]
xs,xc,ys,yc=V(cxs),V(cxc),V(cxs'),V(cxc')
# ys,yc=collect(xs'),collect(xc')
xp,yp,xt,yt,fx,fy,zs=copy(xc),copy(yc),copy(xc),copy(yc),zero(xc),zero(xc),zero(xc)
@. zs = sqrt((xc-xs)^2+(yc-ys)^2)
czs=Array(zs) ; zn=Node(czs) ; zl=sr*0.05
scene = Scene(resolution = (400,400)) ; scale!(scene, 1, 1, 10000)
heatmap!(scene,1:ns,1:ns,lift(z->z,zn),colorrange = (-zl,zl))
# surface!(scene,1:ns,1:ns,lift(z->z,zn),colorrange = (-zl,zl))
zlims!((-zl,zl))
display(scene)
GLMakie.record(scene, "output.gif", 1:nt÷fr, framerate=30) do j
# for j in 1:nt÷fr
for i in 1:fr
@views @. fx[r1,r1] = -k*(eight*xc[r1,r1]-xc[r0,r0]-xc[r1,r0]-xc[r2,r0]-xc[r0,r1]-xc[r2,r1]-xc[r0,r2]-xc[r1,r2]-xc[r2,r2])
@views @. fy[r1,r1] = -k*(eight*yc[r1,r1]-yc[r0,r0]-yc[r1,r0]-yc[r2,r0]-yc[r0,r1]-yc[r2,r1]-yc[r0,r2]-yc[r1,r2]-yc[r2,r2])
@. xt = two*xc-xp+fx*dt2sm
@. yt = two*yc-yp+fy*dt2sm
xc,xp,xt = xt,xc,xp
yc,yp,yt = yt,yc,yp
end
@. zs = sqrt((xc-xs)^2+(yc-ys)^2)
czs=Array(zs)
zn[] = czs
yield()
end
end
@time go()
