diff --git a/HySoP/hysop/tools/kernel_benchmark.py b/HySoP/hysop/tools/kernel_benchmark.py
index 47f7a73bdf0bec5edf95525f7c0fd3a30a37a996..a87735bd4156be57a3a617387256d93790a4175d 100644
--- a/HySoP/hysop/tools/kernel_benchmark.py
+++ b/HySoP/hysop/tools/kernel_benchmark.py
@@ -194,6 +194,8 @@ class BenchmarkSuite:
                         f.write(k + " ")
                         f.write(v + " ")
                         f.write(c + " ")
+                        Nx = s[0]
+                        f.write(str(eval(c)) + ' ')
                         try:
                             f.write(str(self.timings[k][v][c][s]) + "\n")
                         except:
@@ -202,6 +204,21 @@ class BenchmarkSuite:
         f.close()
 
 
+def find_min(filename, kernel=None, version=None, config=None, size=None):
+    d = pickle.load(open(filename, 'r'))
+    cc = {}
+    kl = d.keys() if kernel is None else [kernel] if isinstance(kernel, str) else kernel
+    for k in kl:
+        vl = d[k].keys() if version is None else [version] if isinstance(version, str) else version
+        for v in vl:
+            cl = d[k][v].keys() if config is None else [config] if isinstance(config, str) else config
+            for c in cl:
+                sl = d[k][v][c].keys() if size is None else [size] if isinstance(size, tuple) else size
+                for s in sl:
+                    cc[k + '_' + v + '_' + c] = d[k][v][c][s]
+    print cc[min(cc, key=cc.get)], min(cc, key=cc.get)
+
+
 class Benchmark:
     """Benchmark management"""