diff --git a/crates/applications/multi_core_inverter/src/main.rs b/crates/applications/multi_core_inverter/src/main.rs
index 86e0c51..f8a88ae 100644
--- a/crates/applications/multi_core_inverter/src/main.rs
+++ b/crates/applications/multi_core_inverter/src/main.rs
@@ -29,6 +29,12 @@
 //! in this device, S0 is effectively an inverter, with S1, S2, S3 acting as buffers.
 //! for the purpose of this simulation, all terminal wires are closed loops either explicitly
 //! driven or measured.
+//!
+//! to run this, from toplevel directory:
+//! ```
+//! $ cargo run --release --bin multi_core_inverter
+//! $ pushd crates/coremem; cargo run --release --bin viewer ../../out/applications/multi_core_inverter/0/ ; popd
+//! ```
 
 use coremem::geom::{Meters, Torus};
 use coremem::sim::units::Seconds;
@@ -40,6 +46,7 @@ type Mat = spirv::IsoConductorOr<Ferroxcube3R1MH>;
 
 fn main() {
     coremem::init_logging();
+    coremem::init_debug();
     let um = |n| n as f32 * 1e-6;
     let ns = |n| n as f32 * 1e-9;
     let feat_size = um(10);