diff --git a/src/common.c b/src/common.c
index 40440a5..def8496 100644
--- a/src/common.c
+++ b/src/common.c
@@ -18,11 +18,14 @@ progname_set(char *name)
 }
 
 static void
-vaerr(const char *func, const char *errstr, va_list ap)
+vaerr(const char *prefix, const char *func, const char *errstr, va_list ap)
 {
 	if (progname != NULL)
 		fprintf(stderr, "%s: ", progname);
 
+	if (prefix != NULL)
+		fprintf(stderr, "%s: ", prefix);
+
 	if (func != NULL)
 		fprintf(stderr, "%s: ", func);
 
@@ -40,20 +43,20 @@ vaerr(const char *func, const char *errstr, va_list ap)
 }
 
 void
-verr(const char *func, const char *errstr, ...)
+verr(const char *prefix, const char *func, const char *errstr, ...)
 {
 	va_list ap;
 	va_start(ap, errstr);
-	vaerr(func, errstr, ap);
+	vaerr(prefix, func, errstr, ap);
 	va_end(ap);
 }
 
 void
-vdie(const char *func, const char *errstr, ...)
+vdie(const char *prefix, const char *func, const char *errstr, ...)
 {
 	va_list ap;
 	va_start(ap, errstr);
-	vaerr(func, errstr, ap);
+	vaerr(prefix, func, errstr, ap);
 	va_end(ap);
 	abort();
 }
diff --git a/src/common.h b/src/common.h
index a289985..b1a7caf 100644
--- a/src/common.h
+++ b/src/common.h
@@ -9,21 +9,21 @@
 /* Debug macros */
 
 void progname_set(char *name);
-void verr(const char *func, const char *errstr, ...);
-void vdie(const char *func, const char *errstr, ...);
+void verr(const char *prefix, const char *func, const char *errstr, ...);
+void vdie(const char *prefix, const char *func, const char *errstr, ...);
 
 /* clang-format off */
 
 #define rerr(...) fprintf(stderr, __VA_ARGS__)
-#define err(...) verr(__func__, __VA_ARGS__)
-#define die(...) vdie(__func__, __VA_ARGS__)
-#define info(...) verr("INFO", __VA_ARGS__)
-#define warn(...) verr("WARN", __VA_ARGS__)
+#define err(...)  verr("ERROR", __func__, __VA_ARGS__)
+#define die(...)  vdie("FATAL", __func__, __VA_ARGS__)
+#define info(...) verr("INFO", NULL, __VA_ARGS__)
+#define warn(...) verr("WARN", NULL, __VA_ARGS__)
 
 #ifdef ENABLE_DEBUG
-# define dbg(...) verr(__func__, __VA_ARGS__)
+# define dbg(...) verr("DEBUG", __func__, __VA_ARGS__)
 #else
-# define dbg(...) do { if (0) { verr(__func__, __VA_ARGS__); } } while(0)
+# define dbg(...) do { if (0) { verr("DEBUG", __func__, __VA_ARGS__); } } while(0)
 #endif
 
 #define likely(x) __builtin_expect(!!(x), 1)
diff --git a/src/emu/emu_stat.c b/src/emu/emu_stat.c
index ea3b4fc..3365703 100644
--- a/src/emu/emu_stat.c
+++ b/src/emu/emu_stat.c
@@ -56,14 +56,14 @@ emu_stat_report(struct emu_stat *stat, struct player *player, int last)
 	if (last) {
 		int tmin = (int) (time_elapsed / 60.0);
 		int tsec = (int) ((time_elapsed / 60.0 - tmin) * 60.0);
-		verr(NULL, "%5.1f%% done at avg %.0f kev/s\n",
+		info("%5.1f%% done at avg %.0f kev/s\n",
 				progress * 100.0, avgspeed * 1e-3, tmin, tsec);
-		verr(NULL, "processed %ld input events in %d min %d s\n",
+		info("processed %ld input events in %d min %d s\n",
 				nprocessed, tmin, tsec);
 	} else {
 		int tmin = (int) (time_left / 60.0);
 		int tsec = (int) ((time_left / 60.0 - tmin) * 60.0);
-		verr(NULL, "%5.1f%% done at %.0f kev/s (%d min %d s left)   \r",
+		info("%5.1f%% done at %.0f kev/s (%d min %d s left)   \r",
 				progress * 100.0, speed * 1e-3, tmin, tsec);
 	}
 
diff --git a/src/emu/ovniemu.c b/src/emu/ovniemu.c
index 37e054c..ee0ffd7 100644
--- a/src/emu/ovniemu.c
+++ b/src/emu/ovniemu.c
@@ -40,31 +40,39 @@ main(int argc, char *argv[])
 
 	signal(SIGINT, stop_emulation);
 
-	err("emulation starts");
+	info("emulation starts");
 	int ret = 0;
+	int partial = 0;
 	while (run && (ret = emu_step(emu)) == 0);
 
 	if (ret < 0) {
 		err("emu_step failed");
 		ret = 1;
 		/* continue to close the trace files */
-		err("emulation aborts!");
+		info("emulation aborts!");
 	} else {
 		ret = 0;
 	}
 
-	if (run == 0)
-		err("stopping emulation by user (^C again to abort)");
+	if (run == 0) {
+		info("stopping emulation by user (^C again to abort)");
+		partial = 1;
+	}
 
 	if (emu_finish(emu) != 0) {
 		err("emu_finish failed");
 		ret = 1;
 	}
 
-	if (ret == 0)
-		err("emulation finished ok");
-	else
-		err("emulation finished with errors");
+	if (ret == 0) {
+		if (partial) {
+			info("emulation finished partially but ok");
+		} else {
+			info("emulation finished ok");
+		}
+	} else {
+		info("emulation finished with errors");
+	}
 
 	free(emu);
 
diff --git a/src/emu/pv/cfg.c b/src/emu/pv/cfg.c
index 29ac7bb..726d382 100644
--- a/src/emu/pv/cfg.c
+++ b/src/emu/pv/cfg.c
@@ -155,7 +155,7 @@ cfg_generate(const char *tracedir)
 	struct stat st;
 	if (stat(dst, &st) == 0) {
 		warn("directory '%s' already exists, skipping config copy", dst);
-		return -1;
+		return 0;
 	}
 
 	if (copy_recursive(src, dst) != 0) {
diff --git a/src/emu/recorder.c b/src/emu/recorder.c
index b66fb92..f03f990 100644
--- a/src/emu/recorder.c
+++ b/src/emu/recorder.c
@@ -72,7 +72,7 @@ recorder_advance(struct recorder *rec, int64_t time)
 int
 recorder_finish(struct recorder *rec)
 {
-	err("writting the traces to disk, please wait");
+	info("writing traces to disk, please wait");
 
 	for (struct pvt *pvt = rec->pvt; pvt; pvt = pvt->hh.next) {
 		if (pvt_close(pvt) != 0) {
@@ -84,7 +84,7 @@ recorder_finish(struct recorder *rec)
 	/* TODO: Use configs per pvt */
 	if (cfg_generate(rec->dir) != 0) {
 		err("cfg_generate failed");
-		/* Ignore error */
+		return -1;
 	}
 
 	return 0;
diff --git a/src/emu/system.c b/src/emu/system.c
index 37032d6..a8b345b 100644
--- a/src/emu/system.c
+++ b/src/emu/system.c
@@ -332,6 +332,10 @@ init_end_system(struct system *sys)
 			return -1;
 		}
 	}
+
+	info("loaded %ld looms, %ld processes, %ld threads and %ld cpus",
+			sys->nlooms, sys->nprocs, sys->nthreads, sys->nphycpus);
+
 	return 0;
 }
 
@@ -374,7 +378,7 @@ load_clock_offsets(struct clkoff *clkoff, struct emu_args *args)
 		return -1;
 	}
 
-	err("loaded clock offset table from '%s' with %d entries",
+	info("loaded clock offset table from '%s' with %d entries",
 			offset_file, clkoff_count(clkoff));
 
 	fclose(f);
diff --git a/src/emu/trace.c b/src/emu/trace.c
index 4ba0ca9..113025c 100644
--- a/src/emu/trace.c
+++ b/src/emu/trace.c
@@ -30,7 +30,7 @@ load_stream(struct trace *trace, const char *path)
 	struct stream *stream = calloc(1, sizeof(struct stream));
 
 	if (stream == NULL) {
-		perror("calloc failed");
+		err("calloc failed:");
 		return -1;
 	}
 
@@ -136,7 +136,7 @@ trace_load(struct trace *trace, const char *tracedir)
 	/* Sort the streams */
 	DL_SORT(trace->streams, cmp_streams);
 
-	err("loaded %ld streams", trace->nstreams);
+	info("loaded %ld streams", trace->nstreams);
 
 	return 0;
 }