diff --git a/swash/config-nb.ini b/swash/config-nb.ini
new file mode 100644
index 0000000..66c13c0
--- /dev/null
+++ b/swash/config-nb.ini
@@ -0,0 +1,20 @@
+[data]
+out=../data/out_nb
+
+[swash]
+input=sws/SPEC_buoy_nb.sws
+path=/opt/swash
+out=out/spec_nb
+mpi=8
+
+[post]
+inp=inp_post
+compare=inp_post_nb
+out=out_post
+#nperseg=1024
+dt=0.25
+x0=-1250
+t0=180
+
+[plot]
+out=out_plt
diff --git a/swash/config.ini b/swash/config.ini
index 479dfea..39792c7 100644
--- a/swash/config.ini
+++ b/swash/config.ini
@@ -1,16 +1,11 @@
-[proc]
-#plot=True
-
 [data]
 out=../data/out
-out_nb=../data/out
 
 [swash]
-nb=True
-input=sws/INPUT.sws
+input=sws/SPEC_buoy.sws
 path=/opt/swash
-out=out_sws
-mpi=4
+out=out/spec
+mpi=8
 
 [post]
 inp=inp_post
diff --git a/swash/processing/swash.py b/swash/processing/swash.py
index 814c8b0..c47aadb 100644
--- a/swash/processing/swash.py
+++ b/swash/processing/swash.py
@@ -25,6 +25,7 @@ out = pathlib.Path(config.get("swash", "out"))
 if out.exists():
     log.error(f"Swash output '{out}' already exists")
     sys.exit(1)
+out.parent.mkdir(parents=True, exist_ok=True)
 
 with tempfile.TemporaryDirectory(prefix="swash_", dir=".") as tmp_raw:
     tmpdir = pathlib.Path(tmp_raw)