From 8186963d8c454ba65325053eebe0a4328421755f Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sun, 4 Jul 2021 17:00:26 +0200
Subject: [PATCH] Add lower limit for multithreading

---
 interface/syrk.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/interface/syrk.c b/interface/syrk.c
index 7699db683..edb113d6c 100644
--- a/interface/syrk.c
+++ b/interface/syrk.c
@@ -354,6 +354,17 @@ void CNAME(enum CBLAS_ORDER order, enum CBLAS_UPLO Uplo, enum CBLAS_TRANSPOSE Tr
 #endif
 
   args.common = NULL;
+#ifndef COMPLEX
+#ifdef DOUBLE
+  if (args.n < 100)
+#else
+  if (args.n < 200)
+#endif
+#else
+  if (args.n < 65)
+#endif
+  args.nthreads = 1;
+  else
   args.nthreads = num_cpu_avail(3);
 
   if (args.nthreads == 1) {