skpbench: run for a fixed duration

tools/skpbench/parseskpbench.py

Index: tools/skpbench/parseskpbench.py
diff --git a/tools/skpbench/parseskpbench.py b/tools/skpbench/parseskpbench.py
index f903ec00a885aae8e4e97168dd66db8f523086f0..2368fb111b34cf65788d06ce1b1081ea72959360 100755
--- a/tools/skpbench/parseskpbench.py
+++ b/tools/skpbench/parseskpbench.py
@@ -56,7 +56,6 @@ class Parser:
     self.rows = collections.defaultdict(dict)
     self.cols = collections.defaultdict(dict)
     self.metric = None
-    self.samples = None
     self.sample_ms = None
 
   def parse_file(self, infile):
@@ -69,11 +68,6 @@ class Parser:
       elif match.metric != self.metric:
         raise ValueError("results have mismatched metrics (%s and %s)" %
                          (self.metric, match.metric))
-      if self.samples is None:
-        self.samples = match.samples
-      elif not FLAGS.force and match.samples != self.samples:
-        raise ValueError("results have mismatched number of samples. "
-                         "(use --force to ignore)")
       if self.sample_ms is None:
         self.sample_ms = match.sample_ms
       elif not FLAGS.force and match.sample_ms != self.sample_ms: