From: Berk Hess <hess@kth.se>
Date: Thu, 28 Nov 2013 18:35:29 +0000 (+0100)
Subject: Fixed zero hardware thread count
X-Git-Url: http://biod.pnpi.spb.ru/gitweb/?a=commitdiff_plain;h=15326145ce4fc939fb31cfe44d966b411f6d0678;p=alexxy%2Fgromacs.git

Fixed zero hardware thread count

A missing include caused sysconf not to be called, which lead
to the hardware thread count being zero on most non-Windows systems.

Change-Id: I102c04f494f2946725bb5714482cb861aa8f69fc
---

diff --git a/src/gromacs/gmxlib/gmx_detect_hardware.c b/src/gromacs/gmxlib/gmx_detect_hardware.c
index 2638656aa4..48e45e3106 100644
--- a/src/gromacs/gmxlib/gmx_detect_hardware.c
+++ b/src/gromacs/gmxlib/gmx_detect_hardware.c
@@ -40,6 +40,11 @@
 #include <assert.h>
 #include <string.h>
 
+#ifdef HAVE_UNISTD_H
+/* For sysconf */
+#include <unistd.h>
+#endif
+
 #include "types/enums.h"
 #include "types/hw_info.h"
 #include "types/commrec.h"
@@ -497,6 +502,8 @@ static int get_nthreads_hw_avail(FILE *fplog, const t_commrec *cr)
     ret = sysconf(_SC_NPROCESSORS_CONF);
 #elif defined(_SC_NPROC_CONF)
     ret = sysconf(_SC_NPROC_CONF);
+#else
+#warning "No valid sysconf argument value found. Executables will not be able to determine the number of hardware threads: mdrun will use 1 thread by default!"
 #endif /* End of check for sysconf argument values */
 
 #else