From efb16fafb0148c6e2c1dbe2b482ef394e262281c Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Thu, 4 Nov 2021 12:11:16 +0100
Subject: [PATCH] Fix miscounting of threadpool size on Linux with
 OMP_PROC_BIND=TRUE (#3437)

*  return OMP places (if available, or SC_NPROCESSORS_CONF) for maximum thread count when built with OpenMP
---
 driver/others/memory.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/driver/others/memory.c b/driver/others/memory.c
index 0185fa683..8e601099c 100644
--- a/driver/others/memory.c
+++ b/driver/others/memory.c
@@ -246,6 +246,14 @@ int get_num_procs(void) {
 #endif
 
   if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
+
+#if defined(USE_OPENMP)
+#if _OPENMP >= 201511
+    nums = omp_get_num_places();
+#endif
+    return nums;
+#endif
+
 #if !defined(OS_LINUX)
   return nums;
 #endif
@@ -1806,10 +1814,19 @@ int get_num_procs(void) {
 #endif
 
   if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
+
+#if defined(USE_OPENMP)
+/*  if (omp_get_proc_bind() != omp_proc_bind_false) */
+#if _OPENMP >= 201511
+    nums = omp_get_num_places();	  
+#endif
+    return nums;
+#endif
+
 #if !defined(OS_LINUX)
   return nums;
 #endif
-
+	
 #if !defined(__GLIBC_PREREQ)
   return nums;
 #else