diff --git a/common/concertina_lib.py b/common/concertina_lib.py
index cd95c89..073e493 100644
--- a/common/concertina_lib.py
+++ b/common/concertina_lib.py
@@ -176,7 +176,11 @@ def __init__(self, config, engine, display_mode='colab', iterations=None):
     self.all_actions = {a["name"] for a in self.config}
     self.complete_actions = set()
     self.running_actions = set()
-    assert display_mode in ('colab', 'terminal', 'colab-text', 'silent'), (
+    self.show_only_running = False
+    if os.getenv('LOGICA_TERMINAL_ONELINE', 'no') == 'yes':
+      self.show_only_running = True
+    assert display_mode in ('colab', 'terminal',
+                            'colab-text', 'silent'), (
       'Unrecognized display mode: %s' % display_mode)
     self.display_mode = display_mode
     self.display_id = self.GetDisplayId()
@@ -293,6 +297,13 @@ def AsArtGraph():
     extra_lines = self.ProgressBar().split('\n')
     return AsArtGraph().GetPicture(updating=updating,
                                    extra_lines=extra_lines)
+  def ShowRunning(self, updating):
+     nodes, edges = self.AsNodesAndEdges()
+     running = [n for n in nodes if n.startswith('\033[1m')]
+     if not running:
+       return '*'
+     return '[%d / %d] ' % (len(self.complete_actions),
+                            len(self.all_actions)) + running[0]
 
   def AsNodesAndEdges(self):
     """Nodes and edges to display in terminal."""
@@ -405,14 +416,18 @@ def UpdateDisplay(self, final=False):
     self.display_update_period = min(0.5, self.display_update_period * 1.2)
     if (now - self.recent_display_update_seconds <
         self.display_update_period and
-        not final):
+        not final and
+        not self.show_only_running):
       # Avoid frequent display updates slowing down execution.
       return
     self.recent_display_update_seconds = now
     if self.display_mode == 'colab':
       update_display(self.AsGraphViz(), display_id=self.display_id)
     elif self.display_mode == 'terminal':
-      print(self.AsTextPicture(updating=True))
+      if self.show_only_running:
+        print(self.ShowRunning(updating=True))
+      else:
+        print(self.AsTextPicture(updating=True))
     elif self.display_mode == 'colab-text':
       update_display(
         self.StateAsSimpleHTML(),
diff --git a/examples/graph/tgdk/benchmark_and_collect.py b/examples/graph/tgdk/benchmark_and_collect.py
new file mode 100755
index 0000000..2c8e043
--- /dev/null
+++ b/examples/graph/tgdk/benchmark_and_collect.py
@@ -0,0 +1,196 @@
+#!/usr/bin/env python3
+"""Run all TC/SG benchmarks on Logica and Nemo, collect times into CSV + ASCII table."""
+
+import csv
+import os
+import re
+import resource
+import subprocess
+import sys
+import time
+
+
+BENCHMARKS = [
+    # (problem, dataset, csv_file)
+    ("TC", "g1k", "g1k.csv"),
+    ("TC", "g2k", "g2k.csv"),
+    ("TC", "g3k", "g3k.csv"),
+    ("TC", "g4k", "g4k.csv"),
+    ("TC", "g5k", "g5k.csv"),
+    ("SG", "tree7",  "tree7.csv"),
+    ("SG", "tree8",  "tree8.csv"),
+    ("SG", "tree9",  "tree9.csv"),
+    ("SG", "tree10", "tree10.csv"),
+    ("SG", "tree11", "tree11.csv"),
+    ("SG", "tree12", "tree12.csv"),
+]
+
+
+LOGICA_TEMPLATES = {
+    "TC": '''@Ground(G);
+G(a, b) :- `("{csv}")`(a, b);
+
+@Recursive(TC, ∞, stop: Stop);
+TC(a, b) distinct :- G(a, b);
+TC(a, c) distinct :- TC(a, b), G(b, c);
+
+OldN() += 1 :- TC();
+Stop() :- OldN() == Sum{{1 :- TC()}};
+
+N() += 1 :- TC(a, b);
+''',
+    "SG": '''G(a, b) :- `("{csv}")`(a, b);
+
+@Recursive(SG, -1, stop: Done);
+SG(x, y) distinct :- G(a, x), G(a, y);
+SG(x, y) distinct :- SG(a, b), G(a, x), G(b, y);
+PrevSG(x, y) :- SG(x, y);
+Done() :- Sum{{ 1 :- SG(x, y) }} == Sum{{ 1 :- PrevSG(x, y) }};
+
+N() += 1 :- SG(x, y);
+''',
+}
+
+NEMO_TEMPLATES = {
+    "TC": '''@import edge :- csv{{resource="{csv}", ignore_headers=true}}.
+
+TC(?A, ?B) :- edge(?A, ?B).
+TC(?A, ?C) :- TC(?A, ?B), edge(?B, ?C).
+
+N(#count(?A, ?B)) :- TC(?A, ?B).
+
+@export N :- csv{{resource="n.csv"}}.
+''',
+    "SG": '''@import tree :- csv{{resource="{csv}", ignore_headers=true, format=(string,string)}}.
+
+SG(?X, ?Y) :- tree(?A, ?X), tree(?A, ?Y).
+SG(?X, ?Y) :- SG(?A, ?B), tree(?A, ?X), tree(?B, ?Y).
+
+N(#count(?X, ?Y)) :- SG(?X, ?Y).
+
+@export N :- csv{{resource="n.csv"}}.
+''',
+}
+
+
+def generate_programs(problem, dataset, csv_file):
+    """Write <problem>_<dataset>.l and .nemo files from templates."""
+    base = f"{problem.lower()}_{dataset}"
+    l_file = f"{base}.l"
+    nemo_file = f"{base}.nemo"
+    with open(l_file, "w") as f:
+        f.write(LOGICA_TEMPLATES[problem].format(csv=csv_file))
+    with open(nemo_file, "w") as f:
+        f.write(NEMO_TEMPLATES[problem].format(csv=csv_file))
+    return l_file, nemo_file
+
+
+def run_timed(cmd):
+    """Run a command, return (wall, user, sys, stdout, stderr)."""
+    r0 = resource.getrusage(resource.RUSAGE_CHILDREN)
+    t0 = time.time()
+    proc = subprocess.run(cmd, capture_output=True, text=True)
+    wall = time.time() - t0
+    r1 = resource.getrusage(resource.RUSAGE_CHILDREN)
+    user = r1.ru_utime - r0.ru_utime
+    sys_t = r1.ru_stime - r0.ru_stime
+    return wall, user, sys_t, proc.stdout, proc.stderr
+
+
+def parse_logica_n(stdout):
+    """Extract the N value from Logica's artistic_table output."""
+    # Look for a number inside a table row like "| 12345 |"
+    for line in stdout.splitlines():
+        m = re.match(r"\|\s*(\d+)\s*\|", line)
+        if m:
+            return int(m.group(1))
+    return None
+
+
+def parse_nemo_n(results_path="results/n.csv"):
+    """Nemo writes N to results/n.csv (one number per file)."""
+    try:
+        with open(results_path) as f:
+            line = f.readline().strip().strip('"')
+            return int(line)
+    except (FileNotFoundError, ValueError):
+        return None
+
+
+def run_logica(l_file):
+    cmd = ["python3", "logica/logica.py", l_file, "run_in_terminal", "N"]
+    wall, user, sys_t, out, err = run_timed(cmd)
+    n = parse_logica_n(out)
+    return wall, user + sys_t, n
+
+
+def run_nemo(nemo_file):
+    cmd = ["nemo", nemo_file, "--overwrite-results"]
+    wall, user, sys_t, out, err = run_timed(cmd)
+    n = parse_nemo_n()
+    return wall, user + sys_t, n
+
+
+def ascii_table(rows, header):
+    """Render rows as +---+---+ style table."""
+    all_rows = [header] + [[str(c) for c in r] for r in rows]
+    widths = [max(len(r[i]) for r in all_rows) for i in range(len(header))]
+    sep = "+" + "+".join("-" * (w + 2) for w in widths) + "+"
+    def fmt(r):
+        return "| " + " | ".join(c.ljust(w) for c, w in zip(r, widths)) + " |"
+    lines = [sep, fmt(header), sep]
+    for r in all_rows[1:]:
+        lines.append(fmt(r))
+    lines.append(sep)
+    return "\n".join(lines)
+
+
+def main():
+    os.chdir(os.path.dirname(os.path.abspath(__file__)))
+    os.makedirs("results", exist_ok=True)
+
+    rows = []
+    for problem, dataset, csv_file in BENCHMARKS:
+        print(f"=== {problem} {dataset} ===", flush=True)
+
+        l_file, nemo_file = generate_programs(problem, dataset, csv_file)
+        print(f"  Generated: {l_file}, {nemo_file}", flush=True)
+
+        print(f"  Logica: {l_file}", flush=True)
+        l_wall, l_cpu, l_n = run_logica(l_file)
+        print(f"    wall={l_wall:.2f}s cpu={l_cpu:.2f}s N={l_n}", flush=True)
+
+        print(f"  Nemo: {nemo_file}", flush=True)
+        n_wall, n_cpu, n_n = run_nemo(nemo_file)
+        print(f"    wall={n_wall:.2f}s cpu={n_cpu:.2f}s N={n_n}", flush=True)
+
+        rows.append([
+            problem, dataset,
+            f"{l_wall:.2f}", f"{l_cpu:.2f}",
+            f"{n_wall:.2f}", f"{n_cpu:.2f}",
+            l_n if l_n is not None else "?",
+            n_n if n_n is not None else "?",
+        ])
+
+    header = ["Problem", "Dataset",
+              "Logica wall", "Logica CPU",
+              "Nemo wall", "Nemo CPU",
+              "Logica N", "Nemo N"]
+
+    with open("benchmark_results.csv", "w", newline="") as f:
+        w = csv.writer(f)
+        w.writerow(header)
+        w.writerows(rows)
+
+    table = ascii_table(rows, header)
+    with open("benchmark_results.txt", "w") as f:
+        f.write(table + "\n")
+
+    print()
+    print(table)
+    print()
+    print("Wrote benchmark_results.csv and benchmark_results.txt")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/examples/graph/tgdk/benchmark_results.txt b/examples/graph/tgdk/benchmark_results.txt
new file mode 100644
index 0000000..b0844fc
--- /dev/null
+++ b/examples/graph/tgdk/benchmark_results.txt
@@ -0,0 +1,15 @@
++---------+---------+-------------+------------+-----------+----------+-----------+-----------+
+| Problem | Dataset | Logica wall | Logica CPU | Nemo wall | Nemo CPU | Logica N  | Nemo N    |
++---------+---------+-------------+------------+-----------+----------+-----------+-----------+
+| TC      | g1k     | 1.71        | 9.06       | 3.35      | 3.35     | 1000000   | 1000000   |
+| TC      | g2k     | 2.93        | 37.81      | 14.87     | 14.87    | 4000000   | 4000000   |
+| TC      | g3k     | 4.53        | 66.86      | 36.40     | 36.40    | 9000000   | 9000000   |
+| TC      | g4k     | 6.55        | 105.75     | 70.53     | 70.52    | 16000000  | 16000000  |
+| TC      | g5k     | 9.91        | 162.22     | 116.35    | 116.34   | 24995000  | 24995000  |
+| SG      | tree7   | 1.13        | 4.00       | 0.02      | 0.02     | 17506     | 17506     |
+| SG      | tree8   | 1.40        | 4.48       | 0.11      | 0.11     | 106907    | 106907    |
+| SG      | tree9   | 1.98        | 6.46       | 0.99      | 0.99     | 672411    | 672411    |
+| SG      | tree10  | 2.50        | 15.77      | 5.93      | 5.93     | 4263436   | 4263436   |
+| SG      | tree11  | 6.00        | 85.04      | 38.10     | 38.10    | 25802317  | 25802317  |
+| SG      | tree12  | 24.99       | 453.25     | 276.70    | 276.69   | 161827886 | 161827886 |
++---------+---------+-------------+------------+-----------+----------+-----------+-----------+
diff --git a/examples/graph/tgdk/sg_tree7.l b/examples/graph/tgdk/sg_tree7.l
new file mode 100644
index 0000000..bcd8e20
--- /dev/null
+++ b/examples/graph/tgdk/sg_tree7.l
@@ -0,0 +1,9 @@
+G(a, b) :- `("tree7.csv")`(a, b);
+
+@Recursive(SG, -1, stop: Done);
+SG(x, y) distinct :- G(a, x), G(a, y);
+SG(x, y) distinct :- SG(a, b), G(a, x), G(b, y);
+PrevSG(x, y) :- SG(x, y);
+Done() :- Sum{ 1 :- SG(x, y) } == Sum{ 1 :- PrevSG(x, y) };
+
+N() += 1 :- SG(x, y);
diff --git a/examples/graph/tgdk/sg_tree7.nemo b/examples/graph/tgdk/sg_tree7.nemo
new file mode 100644
index 0000000..24cdeb8
--- /dev/null
+++ b/examples/graph/tgdk/sg_tree7.nemo
@@ -0,0 +1,8 @@
+@import tree :- csv{resource="tree7.csv", ignore_headers=true, format=(string,string)}.
+
+SG(?X, ?Y) :- tree(?A, ?X), tree(?A, ?Y).
+SG(?X, ?Y) :- SG(?A, ?B), tree(?A, ?X), tree(?B, ?Y).
+
+N(#count(?X, ?Y)) :- SG(?X, ?Y).
+
+@export N :- csv{resource="n.csv"}.
diff --git a/examples/graph/tgdk/tc_g1k.l b/examples/graph/tgdk/tc_g1k.l
new file mode 100644
index 0000000..97430be
--- /dev/null
+++ b/examples/graph/tgdk/tc_g1k.l
@@ -0,0 +1,11 @@
+@Ground(G);
+G(a, b) :- `("g1k.csv")`(a, b);
+
+@Recursive(TC, ∞, stop: Stop);
+TC(a, b) distinct :- G(a, b);
+TC(a, c) distinct :- TC(a, b), G(b, c);
+
+OldN() += 1 :- TC();
+Stop() :- OldN() == Sum{1 :- TC()};
+
+N() += 1 :- TC(a, b);
diff --git a/examples/graph/tgdk/tc_g1k.nemo b/examples/graph/tgdk/tc_g1k.nemo
new file mode 100644
index 0000000..7536f41
--- /dev/null
+++ b/examples/graph/tgdk/tc_g1k.nemo
@@ -0,0 +1,8 @@
+@import edge :- csv{resource="g1k.csv", ignore_headers=true}.
+
+TC(?A, ?B) :- edge(?A, ?B).
+TC(?A, ?C) :- TC(?A, ?B), edge(?B, ?C).
+
+N(#count(?A, ?B)) :- TC(?A, ?B).
+
+@export N :- csv{resource="n.csv"}.