REPL more info on iterations

src/lair/execute.rs

@@ -316,6 +316,23 @@ impl<F: PrimeField32> QueryRecord<F> {
     pub fn expect_public_values(&self) -> &[F] {
         self.public_values.as_ref().expect("Public values not set")
     }
+
+    pub fn stats<H: Chipset<F>>(&self, toplevel: &Toplevel<F, H>) -> (usize, usize) {
+        let mut steps = 0;
+        let mut width = 0;
+        for (i, queries) in self.func_queries.iter().enumerate() {
+            steps += queries.len();
+            let func = toplevel.get_by_index(i);
+            let func_width = func.compute_layout_sizes(toplevel).total();
+            width += queries.len() * func_width;
+        }
+        for (i, queries) in self.mem_queries.iter().enumerate() {
+            steps += queries.len();
+            let mem_width = 4 + mem_index_to_len(i);
+            width += queries.len() * mem_width;
+        }
+        (steps, width)
+    }
 }
 
 impl<F: PrimeField32, H: Chipset<F>> Toplevel<F, H> {

src/lair/func_chip.rs

@@ -18,7 +18,7 @@ pub type LayoutSizes = ColumnLayout<usize, usize>;
 
 impl LayoutSizes {
     #[inline]
-    fn total(&self) -> usize {
+    pub fn total(&self) -> usize {
         self.nonce + self.input + self.aux + self.sel
     }
 }

src/lurk/cli/repl.rs

@@ -42,7 +42,6 @@ pub(crate) struct Repl<F: PrimeField32, H: Chipset<F>> {
     pub(crate) queries: QueryRecord<F>,
     pub(crate) toplevel: Toplevel<F, H>,
     pub(crate) lurk_main_idx: usize,
-    eval_idx: usize,
     pub(crate) env: ZPtr<F>,
     state: StateRcCell,
     pwd_path: Utf8PathBuf,
@@ -54,14 +53,12 @@ impl Repl<BabyBear, LurkChip> {
         let (toplevel, mut zstore) = build_lurk_toplevel();
         let queries = QueryRecord::new(&toplevel);
         let lurk_main_idx = toplevel.get_by_name("lurk_main").index;
-        let eval_idx = toplevel.get_by_name("eval").index;
         let env = zstore.intern_empty_env();
         Self {
             zstore,
             queries,
             toplevel,
             lurk_main_idx,
-            eval_idx,
             env,
             state: State::init_lurk_state().rccell(),
             pwd_path: current_dir().expect("Couldn't get current directory"),
@@ -70,11 +67,15 @@ impl Repl<BabyBear, LurkChip> {
     }
 }
 
-fn pretty_iterations_display(iterations: usize) -> String {
+fn pretty_iterations_display(iterations: usize, width: usize) -> String {
     if iterations != 1 {
-        format!("{iterations} iterations")
+        let average_width = width as f64 / iterations as f64;
+        format!(
+            "{iterations} iterations, average step size {:.2}",
+            average_width
+        )
     } else {
-        "1 iteration".into()
+        format!("1 iteration, width {width}")
     }
 }
 
@@ -163,10 +164,10 @@ impl<F: PrimeField32, H: Chipset<F>> Repl<F, H> {
             self.queries.get_inv_queries("hash_32_8", &self.toplevel),
             self.queries.get_inv_queries("hash_48_8", &self.toplevel),
         );
-        let iterations = self.queries.func_queries[self.eval_idx].len();
+        let (iterations, width) = self.queries.stats(&self.toplevel);
         println!(
             "[{}] => {}",
-            pretty_iterations_display(iterations),
+            pretty_iterations_display(iterations, width),
             self.fmt(&output)
         );
     }