Increase timing interval to 5000 cycles on x86_64

chiajeng · Jan 12, 2013 · 23b1bf3 · 23b1bf3
1 parent 6e61541
commit 23b1bf3
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diff --git a/NEWS b/NEWS
@@ -1,3 +1,7 @@
+FFTW 3.3.4
+
+* Increased timing interval on x86_64 to reduce timing errors.
+
 FFTW 3.3.3
 
 * Fix deadlock bug in MPI transforms (thanks to Michael Pippig for the

diff --git a/kernel/cycle.h b/kernel/cycle.h
@@ -230,6 +230,7 @@ static __inline__ ticks getticks(void)
 INLINE_ELAPSED(__inline__)
 
 #define HAVE_TICK_COUNTER
+#define TIME_MIN 5000.0
 #endif
 
 /* PGI compiler, courtesy Cristiano Calonaci, Andrea Tarsi, & Roberto Gori.
@@ -243,6 +244,7 @@ static ticks getticks(void)
 }
 INLINE_ELAPSED(__inline__)
 #define HAVE_TICK_COUNTER
+#define TIME_MIN 5000.0
 #endif
 
 /* Visual C++, courtesy of Dirk Michaelis */
@@ -255,6 +257,7 @@ typedef unsigned __int64 ticks;
 INLINE_ELAPSED(__inline)
 
 #define HAVE_TICK_COUNTER
+#define TIME_MIN 5000.0
 #endif
 
 /*----------------------------------------------------------------*/