diff --git a/README.rst b/README.rst
index 1cee654..2eba442 100644
--- a/README.rst
+++ b/README.rst
@@ -22,10 +22,6 @@ README
     :alt: MIT License
     :target: http://opensource.org/licenses/MIT
 
-.. image:: https://requires.io/github/sdpython/sparkouille/requirements.svg?branch=master
-     :target: https://requires.io/github/sdpython/sparkouille/requirements/?branch=master
-     :alt: Requirements Status
-
 .. image:: https://codecov.io/github/sdpython/sparkouille/coverage.svg?branch=master
     :target: https://codecov.io/github/sdpython/sparkouille?branch=master
 
diff --git a/_doc/sphinxdoc/source/api/index.rst b/_doc/sphinxdoc/source/api/index.rst
index 9204a00..cb0806c 100644
--- a/_doc/sphinxdoc/source/api/index.rst
+++ b/_doc/sphinxdoc/source/api/index.rst
@@ -5,3 +5,4 @@ API
 .. toctree::
 
     datasets
+    fctmr
diff --git a/_doc/sphinxdoc/source/conf.py b/_doc/sphinxdoc/source/conf.py
index bcfd052..fc96cd7 100644
--- a/_doc/sphinxdoc/source/conf.py
+++ b/_doc/sphinxdoc/source/conf.py
@@ -3,7 +3,9 @@
 import os
 import datetime
 import re
-import sphinx_redactor_theme
+# import sphinx_redactor_theme
+# import karma_sphinx_theme
+import sphinx_bootstrap_theme
 
 
 sys.path.insert(0, os.path.abspath(os.path.join(os.path.split(__file__)[0])))
@@ -24,22 +26,31 @@
 
 from pyquickhelper.helpgen.default_conf import set_sphinx_variables, get_default_stylesheet
 set_sphinx_variables(__file__, "sparkouille", "Xavier Dupré", 2018,
-                     "sphinx_redactor_theme", sphinx_redactor_theme.get_html_theme_path(),
+                     "bootstrap", sphinx_bootstrap_theme.get_html_theme_path(),
                      locals(), extlinks=dict(
                          issue=('https://github.com/sdpython/sparkouille/issues/%s', 'issue')),
                      title="sparkouille", book=True)
 
+if False:
+    html_sidebars['**'] = ['globaltoc.html', 'localtoc.html', 'relations.html',
+                           'sourcelink.html', 'searchbox.html']
+    html_sidebars['*'] = html_sidebars['**']
+    html_sidebars[''] = html_sidebars['*']
+
+html_theme_options = {
+    'touch_icon': '_static/project_ico.ico',
+}
+
 blog_root = "http://www.xavierdupre.fr/app/sparkouille/helpsphinx/"
 
 html_context = {
-    'css_files': get_default_stylesheet() + ['_static/my-styles.css'],
+    'css_files': get_default_stylesheet() + ['_static/my-styles.css', '_static/gallery.css'],
 }
 
-html_logo = "project_ico.png"
 
-html_sidebars = {}
+html_logo = "project_ico.png"
 
-language = "en"
+language = "fr"
 
 mathdef_link_only = True
 
diff --git a/_doc/sphinxdoc/source/i_index.rst b/_doc/sphinxdoc/source/i_index.rst
new file mode 100644
index 0000000..0d7cd51
--- /dev/null
+++ b/_doc/sphinxdoc/source/i_index.rst
@@ -0,0 +1,27 @@
+
+===========
+En diagonal
+===========
+
+.. only:: html
+
+    .. toctree::
+        :maxdepth: 2
+
+        issues_todoextlist
+        completed_todoextlist
+        filechanges
+        all_report
+        README
+        HISTORY
+        license
+        blog/blogindex
+        index_module
+
+.. only:: not html
+
+    .. toctree::
+        :maxdepth: 2
+
+        license
+        blog/blogindex
diff --git a/_doc/sphinxdoc/source/index.rst b/_doc/sphinxdoc/source/index.rst
index 1f6edaf..b361e58 100644
--- a/_doc/sphinxdoc/source/index.rst
+++ b/_doc/sphinxdoc/source/index.rst
@@ -28,10 +28,6 @@ Spark approximatif
     :alt: MIT License
     :target: http://opensource.org/licenses/MIT
 
-.. image:: https://requires.io/github/sdpython/sparkouille/requirements.svg?branch=master
-     :target: https://requires.io/github/sdpython/sparkouille/requirements/?branch=master
-     :alt: Requirements Status
-
 .. image:: https://codecov.io/github/sdpython/sparkouille/coverage.svg?branch=master
     :target: https://codecov.io/github/sdpython/sparkouille?branch=master
 
@@ -58,16 +54,14 @@ Lectures, notebooks, helpers pour :epkg:`Spark`.
     lectures/index_pig
     tutorial/index
     api/index
-    i_index
     i_ex
     all_notebooks
-    blog/blogindex
-    index_modules
+    i_index
 
 +----------------------+---------------------+---------------------+--------------------+------------------------+------------------------------------------------+
 | :ref:`l-modules`     |  :ref:`l-functions` | :ref:`l-classes`    | :ref:`l-methods`   | :ref:`l-staticmethods` | :ref:`l-properties`                            |
 +----------------------+---------------------+---------------------+--------------------+------------------------+------------------------------------------------+
 | :ref:`modindex`      |  :ref:`l-EX2`       | :ref:`search`       | :ref:`l-license`   | :ref:`l-changes`       | :ref:`l-README`                                |
 +----------------------+---------------------+---------------------+--------------------+------------------------+------------------------------------------------+
-| :ref:`genindex`      |  :ref:`l-FAQ2`      | :ref:`l-notebooks`  |                    | :ref:`l-statcode`      | `Unit Test Coverage <coverage/index.html>`_    |
+| :ref:`genindex`      |  :ref:`l-FAQ2`      | :ref:`l-notebooks`  | :ref:`l-HISTORY`   | :ref:`l-statcode`      | `Unit Test Coverage <coverage/index.html>`_    |
 +----------------------+---------------------+---------------------+--------------------+------------------------+------------------------------------------------+
diff --git a/_doc/sphinxdoc/source/nbcov-2018-04-09.png b/_doc/sphinxdoc/source/nbcov-2018-04-09.png
deleted file mode 100644
index ebe5a86..0000000
Binary files a/_doc/sphinxdoc/source/nbcov-2018-04-09.png and /dev/null differ
diff --git a/_unittests/ut_fctmr/test_parallel_fctmr.py b/_unittests/ut_fctmr/test_parallel_fctmr.py
index e923455..cacadd9 100644
--- a/_unittests/ut_fctmr/test_parallel_fctmr.py
+++ b/_unittests/ut_fctmr/test_parallel_fctmr.py
@@ -57,7 +57,7 @@ def map_custom(input):
 
 class TestParallelFctMr(ExtTestCase):
 
-    def test_parallel_mapper(self):
+    def test_parallel_mapper_sig(self):
         def func2(x):
             return x + 1
         li = numpy.array(list(range(0, 1000000)), dtype=numpy.float64)
@@ -72,6 +72,21 @@ def func2(x):
         self.assertEqual(out[:10], [1.0, 2.0, 3.0, 4.0,
                                     5.0, 6.0, 7.0, 8.0, 9.0, 10.0])
 
+    def test_parallel_mapper_nosig(self):
+        def func2(x):
+            return x + 1
+        li = numpy.array(list(range(0, 1000000)), dtype=numpy.float64)
+        out = list(parallel_mapper(
+            func2, li, nogil=False, nopython=False))
+        self.assertEqual(out[:10], [1.0, 2.0, 3.0, 4.0,
+                                    5.0, 6.0, 7.0, 8.0, 9.0, 10.0])
+        out = map_custom(li)
+        self.assertEqual(out[:10], numpy.array(
+            [1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0]))
+        out = list(map(func2, li))
+        self.assertEqual(out[:10], [1.0, 2.0, 3.0, 4.0,
+                                    5.0, 6.0, 7.0, 8.0, 9.0, 10.0])
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/appveyor.yml b/appveyor.yml
index d92e1b0..b3827bf 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -21,7 +21,7 @@ install:
   - "%PYTHON%\\Scripts\\pymy_install3 --set=pyquickhelper"
   - "%PYTHON%\\Scripts\\pymy_install3 --task=tool --source=zip graphviz"
   - "%PYTHON%\\Scripts\\pip install pyquickhelper --no-deps"
-  - "%PYTHON%\\Scripts\\pip install wcwidth guzzle_sphinx_theme backcall pyensae yahoo_historical qgrid"
+  - "%PYTHON%\\Scripts\\pip install wcwidth backcall pyensae yahoo_historical qgrid sphinx_bootstrap_theme"
   - "%PYTHON%\\Scripts\\pymy_install3 scikit-learn scipy cffi statsmodels cytoolz Pillow numba"
   - "set PATH=%PATH%;C:\\projects\\jyquickhelper\\build\\update_modules\\Graphviz\\bin"
 build: off
diff --git a/requirements.txt b/requirements.txt
index cdd83e7..1960013 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ pymyinstall
 pyquickhelper>=1.7.2508
 pyspark
 qgrid
-sphinx-redactor-theme
+sphinx_bootstrap_theme
 sphinxjp.themes.basicstrap
 sphinxjp.themes.sphinxjp
 wheel
diff --git a/src/sparkouille/fctmr/parallel_fctmr.py b/src/sparkouille/fctmr/parallel_fctmr.py
index fe22ae2..537bffe 100644
--- a/src/sparkouille/fctmr/parallel_fctmr.py
+++ b/src/sparkouille/fctmr/parallel_fctmr.py
@@ -73,30 +73,53 @@ def loop(nb, inputs, outputs):
                         nopython=nopython, cache=True)(loop)
         inputs = create_array_numba(chunk_size, sigin)
         outputs = create_array_numba(chunk_size, sigout)
+
+        done = 0
+        for obs in gen:
+            if done < len(inputs):
+                inputs[done] = obs
+                done += 1
+            else:
+                loop_jit(done, inputs, outputs)
+                for out in outputs:
+                    yield out
+                done = 0
+        if 0 < done < len(inputs):
+            loop_jit(done, inputs, outputs)
+            for out in outputs:
+                yield out
+
     else:
-        fct_jit = jit(nogil=nogil, parallel=parallel,
-                      nopython=nopython, cache=True)(fct)
 
         def loop(nb, inputs, outputs):
             for i in prange(nb):
                 outputs[i] = fct_jit(inputs[i])
 
-        loop_jit = njit(nogil=nogil, parallel=parallel,
-                        nopython=nopython, cache=True)(loop)
-        inputs = [None for i in range(0, chunk_size)]
-        outputs = [None for i in range(0, chunk_size)]
-
-    done = 0
-    for obs in gen:
-        if done < len(inputs):
-            inputs[done] = obs
-            done += 1
-        else:
+        loop_jit = None
+        fct_jit = None
+
+        inputs = None
+        outputs = None
+
+        done = 0
+        for obs in gen:
+            if inputs is None:
+                inputs = [obs] * chunk_size
+                outputs = [fct(obs)] * chunk_size
+                loop_jit = njit(nogil=nogil, parallel=parallel,
+                                nopython=nopython, cache=True)(loop)
+                fct_jit = jit(nogil=nogil, parallel=parallel,
+                              nopython=nopython, cache=True)(fct)
+
+            if done < len(inputs):
+                inputs[done] = obs
+                done += 1
+            else:
+                loop_jit(done, inputs, outputs)
+                for out in outputs:
+                    yield out
+                done = 0
+        if 0 < done < len(inputs):
             loop_jit(done, inputs, outputs)
             for out in outputs:
                 yield out
-            done = 0
-    if 0 < done < len(inputs):
-        loop_jit(done, inputs, outputs)
-        for out in outputs:
-            yield out
diff --git a/src/sparkouille/fctmr/simplefctmr.py b/src/sparkouille/fctmr/simplefctmr.py
index f712ce2..8278f9e 100644
--- a/src/sparkouille/fctmr/simplefctmr.py
+++ b/src/sparkouille/fctmr/simplefctmr.py
@@ -67,7 +67,7 @@ def take(gen, count=5, skip=0):
     @return             generator
 
     .. exref::
-        :title: mapper
+        :title: take
         :tag: progfonc
 
         .. runpython::
@@ -96,7 +96,7 @@ def ffilter(fct, gen):
     @return             generator
 
     .. exref::
-        :title: mapper
+        :title: filter
         :tag: progfonc
 
         .. runpython::
@@ -164,7 +164,7 @@ def combiner(fctkey1, gen1, fctkey2, gen2, how='inner'):
     @return                 generator
 
     .. exref::
-        :title: reducer
+        :title: combiner or join
         :tag: progfonc
 
         .. runpython::