diff --git a/workflows/nearly_nonidentifiable.smk b/workflows/nearly_nonidentifiable.smk
index ded9b73..5545cda 100644
--- a/workflows/nearly_nonidentifiable.smk
+++ b/workflows/nearly_nonidentifiable.smk
@@ -1,6 +1,7 @@
 # ---------------------------------------------------
 # - Experiment with a nearly non-identifiable model -
 # ---------------------------------------------------
+from contextlib import redirect_stdout
 from dataclasses import dataclass
 import numpy as np
 import matplotlib.pyplot as plt
@@ -72,12 +73,19 @@ rule generate_data:
 
 rule run_mcmc:
     input: "data/{setting}-{seed}.joblib"
-    output: "samples/MCMC/{setting}-{seed}.npy"
+    output:
+        array = "samples/MCMC/{setting}-{seed}.npy",
+        convergence = "samples/MCMC/convergence/{setting}-{seed}.txt"
     run:
         data = joblib.load(str(input))
-        estimator = algo.DiscreteCategoricalMeanEstimator()
+
+        estimator = algo.DiscreteCategoricalMeanEstimator(params=algo.SamplingParams(chains=4))
         samples = np.asarray(estimator.sample_posterior(data)[estimator.P_TEST_Y])
-        np.save(str(output), samples)
+        with open(output.convergence, "w") as fh:
+            with redirect_stdout(fh):
+                estimator.get_mcmc().print_summary()
+
+        np.save(output.array, samples)
 
 
 def _bootstrap(rng, stat: dc.SummaryStatistic) -> dc.SummaryStatistic: