Added an example for creating arbitrary projects, see acc/test_solver and src/exampleproject. Note: make sure that dt is calculated adequately and that all parameters are defined properly (see src/exampleproject/simulation.cc)

acc/test_solver/stencil_process.sps

@@ -0,0 +1,18 @@
+#include "stencil_definition.sdh"
+
+Vector
+value(in VectorField uu)
+{
+    return (Vector){value(uu.x), value(uu.y), value(uu.z)};
+}
+
+in VectorField uu(VTXBUF_A, VTXBUF_B, VTXBUF_C);
+out VectorField out_uu(VTXBUF_A, VTXBUF_B, VTXBUF_C);
+
+Kernel void
+solve()
+{
+    Scalar dt = AC_dt;
+    Vector rate_of_change = (Vector){1, 2, 3};
+    out_uu = rk3(out_uu, uu, rate_of_change, dt);
+}