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List:       graphicsmagick-commit
Subject:    [GM-commit] GraphicsMagick: Add a speedup indication to
From:       GraphicsMagick Commits <graphicsmagick-commit () lists ! sourceforge ! net>
Date:       2011-11-26 23:48:01
Message-ID: hg.a64b0369522f.1322351281.-1602079902 () blade ! simplesystems ! org
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changeset a64b0369522f in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=a64b0369522f
summary: Add a speedup indication to -stepthreads output.

diffstat:

 ChangeLog          |   2 ++
 magick/command.c   |  16 +++++++++++++++-
 www/Changelog.html |   4 +++-
 3 files changed, 20 insertions(+), 2 deletions(-)

diffs (70 lines):

diff -r 6466bd711bd9 -r a64b0369522f ChangeLog
--- a/ChangeLog	Sat Nov 26 16:11:48 2011 -0600
+++ b/ChangeLog	Sat Nov 26 17:47:55 2011 -0600
@@ -7,6 +7,8 @@
 	to measure how an algorithm benefits from threading.
 	(BenchmarkImageCommand): Fix benchmark argument parsing so it is
 	not order dependent.
+	(BenchmarkImageCommand): Add a speedup indication to -stepthreads
+	output.
 
 	* config/delegates.mgk.in: File names in gnuplot files need to be
 	surrounded by double quotes or gnuplot parser will reject them.
diff -r 6466bd711bd9 -r a64b0369522f magick/command.c
--- a/magick/command.c	Sat Nov 26 16:11:48 2011 -0600
+++ b/magick/command.c	Sat Nov 26 17:47:55 2011 -0600
@@ -1508,6 +1508,10 @@
   long
     current_threads,
     max_threads;
+
+  double
+    rate_total_st;
+
 #endif /* HAVE_OPENMP */
 
   double
@@ -1550,6 +1554,7 @@
   thread_bench=MagickFalse;
   max_threads = (long) GetMagickResourceLimit(ThreadsResource);
   current_threads = 1;
+  rate_total_st = 1.0;
 #endif /* HAVE_OPENMP */
   duration=-1.0;
   iterations=1L;
@@ -1740,11 +1745,20 @@
 	rate_total=(((double) iteration)/elapsed_time);
 	rate_cpu=(((double) iteration)/user_time);
 	threads_limit=(long) GetMagickResourceLimit(ThreadsResource);
+#if defined(HAVE_OPENMP)
+	if (1 == threads_limit)
+	  rate_total_st=rate_total;
+#endif
 	(void) fflush(stdout);
 	(void) fprintf(stderr,
 		       "Results: %ld threads %ld iter %.2fs user %.2fs total %.3f iter/s "
-		       "(%.3f iter/s cpu)\n",
+		       "(%.3f iter/s cpu)",
 		       threads_limit,iteration,user_time,elapsed_time,rate_total,rate_cpu);
+#if defined(HAVE_OPENMP)
+	if (thread_bench)
+	  (void) fprintf(stderr," %.2f speedup",(rate_total/rate_total_st));
+#endif
+	(void) fprintf(stderr,"\n");
 	(void) fflush(stderr);
       }
 #if defined(HAVE_OPENMP)
diff -r 6466bd711bd9 -r a64b0369522f www/Changelog.html
--- a/www/Changelog.html	Sat Nov 26 16:11:48 2011 -0600
+++ b/www/Changelog.html	Sat Nov 26 17:47:55 2011 -0600
@@ -45,7 +45,9 @@
 execute the specified command with an increasing number of threads
 to measure how an algorithm benefits from threading.
 (BenchmarkImageCommand): Fix benchmark argument parsing so it is
-not order dependent.</li>
+not order dependent.
+(BenchmarkImageCommand): Add a speedup indication to -stepthreads
+output.</li>
 <li>config/delegates.mgk.in: File names in gnuplot files need to be
 surrounded by double quotes or gnuplot parser will reject them.</li>
 </ul>

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