diff --git a/HySoP/CMake/FindPythonLibs.cmake b/HySoP/CMake/FindPythonLibs.cmake
new file mode 100755
index 0000000000000000000000000000000000000000..af80e2c7daefe7a8563f3f4b31a78d67f47a8f07
--- /dev/null
+++ b/HySoP/CMake/FindPythonLibs.cmake
@@ -0,0 +1,276 @@
+# - Find python libraries
+# This module finds if Python is installed and determines where the
+# include files and libraries are. It also determines what the name of
+# the library is. This code sets the following variables:
+#
+#  PYTHONLIBS_FOUND           - have the Python libs been found
+#  PYTHON_LIBRARIES           - path to the python library
+#  PYTHON_INCLUDE_PATH        - path to where Python.h is found (deprecated)
+#  PYTHON_INCLUDE_DIRS        - path to where Python.h is found
+#  PYTHON_DEBUG_LIBRARIES     - path to the debug library (deprecated)
+#  PYTHONLIBS_VERSION_STRING  - version of the Python libs found (since CMake 2.8.8)
+#
+# The Python_ADDITIONAL_VERSIONS variable can be used to specify a list of
+# version numbers that should be taken into account when searching for Python.
+# You need to set this variable before calling find_package(PythonLibs).
+#
+# If you'd like to specify the installation of Python to use, you should modify
+# the following cache variables:
+#  PYTHON_LIBRARY             - path to the python library
+#  PYTHON_INCLUDE_DIR         - path to where Python.h is found
+
+#=============================================================================
+# Copyright 2001-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+INCLUDE(CMakeFindFrameworks)
+# Search for the python framework on Apple.
+CMAKE_FIND_FRAMEWORKS(Python)
+
+SET(_PYTHON1_VERSIONS 1.6 1.5)
+SET(_PYTHON2_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
+SET(_PYTHON3_VERSIONS 3.3 3.2 3.1 3.0)
+
+IF(PythonLibs_FIND_VERSION)
+    IF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+        STRING(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonLibs_FIND_VERSION}")
+        STRING(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}")
+        UNSET(_PYTHON_FIND_OTHER_VERSIONS)
+        IF(PythonLibs_FIND_VERSION_EXACT)
+            IF(_PYTHON_FIND_MAJ_MIN STREQUAL PythonLibs_FIND_VERSION)
+                SET(_PYTHON_FIND_OTHER_VERSIONS "${PythonLibs_FIND_VERSION}")
+            ELSE(_PYTHON_FIND_MAJ_MIN STREQUAL PythonLibs_FIND_VERSION)
+                SET(_PYTHON_FIND_OTHER_VERSIONS "${PythonLibs_FIND_VERSION}" "${_PYTHON_FIND_MAJ_MIN}")
+            ENDIF(_PYTHON_FIND_MAJ_MIN STREQUAL PythonLibs_FIND_VERSION)
+        ELSE(PythonLibs_FIND_VERSION_EXACT)
+            FOREACH(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS})
+                IF(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN)
+                    LIST(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
+                ENDIF()
+             ENDFOREACH()
+        ENDIF(PythonLibs_FIND_VERSION_EXACT)
+        UNSET(_PYTHON_FIND_MAJ_MIN)
+        UNSET(_PYTHON_FIND_MAJ)
+    ELSE(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+        SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonLibs_FIND_VERSION}_VERSIONS})
+    ENDIF(PythonLibs_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+ELSE(PythonLibs_FIND_VERSION)
+    SET(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
+ENDIF(PythonLibs_FIND_VERSION)
+
+# Set up the versions we know about, in the order we will search. Always add
+# the user supplied additional versions to the front.
+SET(_Python_VERSIONS
+  ${Python_ADDITIONAL_VERSIONS}
+  ${_PYTHON_FIND_OTHER_VERSIONS}
+  )
+
+UNSET(_PYTHON_FIND_OTHER_VERSIONS)
+UNSET(_PYTHON1_VERSIONS)
+UNSET(_PYTHON2_VERSIONS)
+UNSET(_PYTHON3_VERSIONS)
+
+FOREACH(_CURRENT_VERSION ${_Python_VERSIONS})
+  STRING(REPLACE "." "" _CURRENT_VERSION_NO_DOTS ${_CURRENT_VERSION})
+  IF(WIN32)
+    FIND_LIBRARY(PYTHON_DEBUG_LIBRARY
+      NAMES python${_CURRENT_VERSION_NO_DOTS}_d python
+      PATHS
+      [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
+      [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs/Debug
+      [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
+      [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
+      )
+  ENDIF(WIN32)
+  FIND_LIBRARY(PYTHON_LIBRARY
+    NAMES
+    python${_CURRENT_VERSION_NO_DOTS}
+    python${_CURRENT_VERSION}mu
+    python${_CURRENT_VERSION}m
+    python${_CURRENT_VERSION}u
+    python${_CURRENT_VERSION}
+    PATHS ENV LD_LIBRARY_PATH ENV DYLD_LIBRARY_PATH
+#    PATHS
+#      [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
+#      [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
+    # Avoid finding the .dll in the PATH.  We want the .lib.
+ #   NO_SYSTEM_ENVIRONMENT_PATH
+  )
+
+  # Look for the static library in the Python config directory
+  FIND_LIBRARY(PYTHON_LIBRARY
+    NAMES python${_CURRENT_VERSION_NO_DOTS} python${_CURRENT_VERSION}
+    # Avoid finding the .dll in the PATH.  We want the .lib.
+    NO_SYSTEM_ENVIRONMENT_PATH
+    # This is where the static library is usually located
+    PATH_SUFFIXES python${_CURRENT_VERSION}/config
+  )
+
+  # For backward compatibility, honour value of PYTHON_INCLUDE_PATH, if
+  # PYTHON_INCLUDE_DIR is not set.
+  IF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)
+    SET(PYTHON_INCLUDE_DIR "${PYTHON_INCLUDE_PATH}" CACHE PATH
+      "Path to where Python.h is found" FORCE)
+  ENDIF(DEFINED PYTHON_INCLUDE_PATH AND NOT DEFINED PYTHON_INCLUDE_DIR)
+
+  SET(PYTHON_FRAMEWORK_INCLUDES)
+  IF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)
+    FOREACH(dir ${Python_FRAMEWORKS})
+      SET(PYTHON_FRAMEWORK_INCLUDES ${PYTHON_FRAMEWORK_INCLUDES}
+        ${dir}/Versions/${_CURRENT_VERSION}/include/python${_CURRENT_VERSION})
+    ENDFOREACH(dir)
+  ENDIF(Python_FRAMEWORKS AND NOT PYTHON_INCLUDE_DIR)
+
+  FIND_PATH(PYTHON_INCLUDE_DIR
+    NAMES Python.h
+    PATHS
+      ${PYTHON_FRAMEWORK_INCLUDES}
+      [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
+      [HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/include
+    PATH_SUFFIXES
+      python${_CURRENT_VERSION}mu
+      python${_CURRENT_VERSION}m
+      python${_CURRENT_VERSION}u
+      python${_CURRENT_VERSION}
+  )
+
+  # For backward compatibility, set PYTHON_INCLUDE_PATH.
+  SET(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}")
+
+  IF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")
+    FILE(STRINGS "${PYTHON_INCLUDE_DIR}/patchlevel.h" python_version_str
+         REGEX "^#define[ \t]+PY_VERSION[ \t]+\"[^\"]+\"")
+    STRING(REGEX REPLACE "^#define[ \t]+PY_VERSION[ \t]+\"([^\"]+)\".*" "\\1"
+                         PYTHONLIBS_VERSION_STRING "${python_version_str}")
+    UNSET(python_version_str)
+  ENDIF(PYTHON_INCLUDE_DIR AND EXISTS "${PYTHON_INCLUDE_DIR}/patchlevel.h")
+
+  IF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
+    BREAK()
+  ENDIF(PYTHON_LIBRARY AND PYTHON_INCLUDE_DIR)
+ENDFOREACH(_CURRENT_VERSION)
+
+MARK_AS_ADVANCED(
+  PYTHON_DEBUG_LIBRARY
+  PYTHON_LIBRARY
+  PYTHON_INCLUDE_DIR
+)
+
+# We use PYTHON_INCLUDE_DIR, PYTHON_LIBRARY and PYTHON_DEBUG_LIBRARY for the
+# cache entries because they are meant to specify the location of a single
+# library. We now set the variables listed by the documentation for this
+# module.
+SET(PYTHON_INCLUDE_DIRS "${PYTHON_INCLUDE_DIR}")
+SET(PYTHON_DEBUG_LIBRARIES "${PYTHON_DEBUG_LIBRARY}")
+
+# These variables have been historically named in this module different from
+# what SELECT_LIBRARY_CONFIGURATIONS() expects.
+SET(PYTHON_LIBRARY_DEBUG "${PYTHON_DEBUG_LIBRARY}")
+SET(PYTHON_LIBRARY_RELEASE "${PYTHON_LIBRARY}")
+INCLUDE(SelectLibraryConfigurations)
+SELECT_LIBRARY_CONFIGURATIONS(PYTHON)
+# SELECT_LIBRARY_CONFIGURATIONS() sets ${PREFIX}_FOUND if it has a library.
+# Unset this, this prefix doesn't match the module prefix, they are different
+# for historical reasons.
+UNSET(PYTHON_FOUND)
+
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibs
+                                  REQUIRED_VARS PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS
+                                  VERSION_VAR PYTHONLIBS_VERSION_STRING)
+
+# PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python.
+# PYTHON_WRITE_MODULES_HEADER(<filename>) writes a header file you can include
+# in your sources to initialize the static python modules
+FUNCTION(PYTHON_ADD_MODULE _NAME )
+  GET_PROPERTY(_TARGET_SUPPORTS_SHARED_LIBS
+    GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS)
+  OPTION(PYTHON_ENABLE_MODULE_${_NAME} "Add module ${_NAME}" TRUE)
+  OPTION(PYTHON_MODULE_${_NAME}_BUILD_SHARED
+    "Add module ${_NAME} shared" ${_TARGET_SUPPORTS_SHARED_LIBS})
+
+  # Mark these options as advanced
+  MARK_AS_ADVANCED(PYTHON_ENABLE_MODULE_${_NAME}
+    PYTHON_MODULE_${_NAME}_BUILD_SHARED)
+
+  IF(PYTHON_ENABLE_MODULE_${_NAME})
+    IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
+      SET(PY_MODULE_TYPE MODULE)
+    ELSE(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
+      SET(PY_MODULE_TYPE STATIC)
+      SET_PROPERTY(GLOBAL  APPEND  PROPERTY  PY_STATIC_MODULES_LIST ${_NAME})
+    ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
+
+    SET_PROPERTY(GLOBAL  APPEND  PROPERTY  PY_MODULES_LIST ${_NAME})
+    ADD_LIBRARY(${_NAME} ${PY_MODULE_TYPE} ${ARGN})
+#    TARGET_LINK_LIBRARIES(${_NAME} ${PYTHON_LIBRARIES})
+
+    IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
+      SET_TARGET_PROPERTIES(${_NAME} PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}")
+      IF(WIN32 AND NOT CYGWIN)
+        SET_TARGET_PROPERTIES(${_NAME} PROPERTIES SUFFIX ".pyd")
+      ENDIF(WIN32 AND NOT CYGWIN)
+    ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED)
+
+  ENDIF(PYTHON_ENABLE_MODULE_${_NAME})
+ENDFUNCTION(PYTHON_ADD_MODULE)
+
+FUNCTION(PYTHON_WRITE_MODULES_HEADER _filename)
+
+  GET_PROPERTY(PY_STATIC_MODULES_LIST  GLOBAL  PROPERTY PY_STATIC_MODULES_LIST)
+
+  GET_FILENAME_COMPONENT(_name "${_filename}" NAME)
+  STRING(REPLACE "." "_" _name "${_name}")
+  STRING(TOUPPER ${_name} _nameUpper)
+  SET(_filename ${CMAKE_CURRENT_BINARY_DIR}/${_filename})
+
+  SET(_filenameTmp "${_filename}.in")
+  FILE(WRITE ${_filenameTmp} "/*Created by cmake, do not edit, changes will be lost*/\n")
+  FILE(APPEND ${_filenameTmp}
+"#ifndef ${_nameUpper}
+#define ${_nameUpper}
+
+#include <Python.h>
+
+#ifdef __cplusplus
+extern \"C\" {
+#endif /* __cplusplus */
+
+")
+
+  FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
+    FILE(APPEND ${_filenameTmp} "extern void init${PYTHON_MODULE_PREFIX}${_currentModule}(void);\n\n")
+  ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
+
+  FILE(APPEND ${_filenameTmp}
+"#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+")
+
+
+  FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
+    FILE(APPEND ${_filenameTmp} "int ${_name}_${_currentModule}(void) \n{\n  static char name[]=\"${PYTHON_MODULE_PREFIX}${_currentModule}\"; return PyImport_AppendInittab(name, init${PYTHON_MODULE_PREFIX}${_currentModule});\n}\n\n")
+  ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
+
+  FILE(APPEND ${_filenameTmp} "void ${_name}_LoadAllPythonModules(void)\n{\n")
+  FOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
+    FILE(APPEND ${_filenameTmp} "  ${_name}_${_currentModule}();\n")
+  ENDFOREACH(_currentModule ${PY_STATIC_MODULES_LIST})
+  FILE(APPEND ${_filenameTmp} "}\n\n")
+  FILE(APPEND ${_filenameTmp} "#ifndef EXCLUDE_LOAD_ALL_FUNCTION\nvoid CMakeLoadAllPythonModules(void)\n{\n  ${_name}_LoadAllPythonModules();\n}\n#endif\n\n#endif\n")
+
+# with CONFIGURE_FILE() cmake complains that you may not use a file created using FILE(WRITE) as input file for CONFIGURE_FILE()
+  EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${_filenameTmp}" "${_filename}" OUTPUT_QUIET ERROR_QUIET)
+
+ENDFUNCTION(PYTHON_WRITE_MODULES_HEADER)
diff --git a/HySoP/CMake/FindPythonModule.cmake b/HySoP/CMake/FindPythonModule.cmake
new file mode 100755
index 0000000000000000000000000000000000000000..d16955492361d3688344bcfdde241191ca7d2136
--- /dev/null
+++ b/HySoP/CMake/FindPythonModule.cmake
@@ -0,0 +1,25 @@
+# Search for a particular python module. 
+# Sources : see http://www.cmake.org/pipermail/cmake/2011-January/041666.html
+# 
+# Usage : find_python_module(mpi4py REQUIRED)
+#
+function(find_python_module module)
+	string(TOUPPER ${module} module_upper)
+	if(ARGC GREATER 1 AND ARGV1 STREQUAL "REQUIRED")
+	  set(${module}_FIND_REQUIRED TRUE)
+	endif()
+	# A module's location is usually a directory, but for binary modules
+	# it's a .so file.
+	execute_process(COMMAND ${PYTHON_EXECUTABLE} -c 
+	  "import re, ${module}; print re.compile('/__init__.py.*').sub('',${module}.__file__)"
+	  RESULT_VARIABLE _${module}_status 
+	  OUTPUT_VARIABLE _${module}_location
+	  ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
+	
+    	if(NOT _${module}_status)
+	  set(python_${module_upper} ${_${module}_location} CACHE STRING 
+	    "Location of Python module ${module}")
+	endif(NOT _${module}_status)
+
+	find_package_handle_standard_args(${module} DEFAULT_MSG _${module}_location)
+endfunction(find_python_module)
diff --git a/HySoP/CMakeLists.txt b/HySoP/CMakeLists.txt
index 3d36c521f9087b3072f4360156c088670cfb44c0..715d373cb1d9b73714073b622934b43f7c241946 100644
--- a/HySoP/CMakeLists.txt
+++ b/HySoP/CMakeLists.txt
@@ -63,18 +63,33 @@ endif(WITH_TESTS)
 # We search for libraries Parmes depends on and 
 # set the compile/link conf (-I and -L opt)
 
-# --- MPI ---
 
+set(PARMES_LIBRARY_NAME parmes)
+set(PACKAGE_NAME Parmes)
+
+# --- Python ---
+
+include(FindPythonInterp)
+include(FindPythonLibs)
+include(FindPythonModule)
+if(NOT PYTHONLIBS_VERSION_STRING VERSION_EQUAL PYTHON_VERSION_STRING)
+  display(PYTHONLIBS_VERSION_STRING)
+  display(PYTHON_VERSION_STRING)
+  message(FATAL_ERROR "Python library and executable versions do not match.")
+endif()
+
+find_python_module(numpy REQUIRED)
 #Install dir for python (default = --user)
 execute_process(
-  COMMAND python -c "import site ; print site.USER_SITE" 
+  COMMAND ${PYTHON_EXECUTABLE} -c "import site ; print site.USER_SITE" 
   OUTPUT_VARIABLE ${PROJECT_NAME}_INSTALL_DIR)
 string(STRIP ${${PROJECT_NAME}_INSTALL_DIR} ${PROJECT_NAME}_INSTALL_DIR)
 set(CMAKE_INSTALL_PREFIX ${${PROJECT_NAME}_INSTALL_DIR}/${PROJECT_NAME})
 
-set(PARMES_LIBRARY_NAME parmes)
-set(PACKAGE_NAME Parmes)
+# --- MPI ---
+
 if(USE_MPI)
+  find_python_module(mpi4py REQUIRED)
   # Find MPI for C++ and fortran.
   find_package(MPI REQUIRED)
   # -I
@@ -104,14 +119,13 @@ if(EXISTS ${CMAKE_SOURCE_DIR}/parmepy/__init__.py.in)
   configure_file(parmepy/__init__.py.in ${CMAKE_SOURCE_DIR}/parmepy/__init__.py)
 endif()
 
-set(PYTHON_EXECUTABLE python)
 set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${CMAKE_BINARY_DIR}/build)
 
-ADD_CUSTOM_TARGET(python-build ALL COMMAND python ${CMAKE_CURRENT_BINARY_DIR}/setup.py build config_fc --f90exec=${CMAKE_Fortran_COMPILER}
+ADD_CUSTOM_TARGET(python-build ALL COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/setup.py build config_fc --f90exec=${CMAKE_Fortran_COMPILER}
    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} COMMENT "build parmepy package")
 
 # To install python package AND parmes library and modules
-ADD_CUSTOM_TARGET(python-install COMMAND python ${CMAKE_CURRENT_BINARY_DIR}/setup.py install --user config_fc --f90exec=${CMAKE_Fortran_COMPILER}
+ADD_CUSTOM_TARGET(python-install COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/setup.py install --user config_fc --f90exec=${CMAKE_Fortran_COMPILER}
   COMMAND make install
   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} COMMENT "build/install parmepy package")
 
@@ -141,6 +155,9 @@ set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 # ============= Summary =============
 if(VERBOSE_MODE)
   message(STATUS "====================== Summary ======================")
+  message(STATUS " Python version :${PYTHON_VERSION_STRING}")
+  message(STATUS " Python executable : ${PYTHON_EXECUTABLE}"})
+  message(STATUS " Python libraries : ${PYTHON_LIBRARIES}")
   message(STATUS " Compiler : ${CMAKE_Fortran_COMPILER}")
   message(STATUS " Sources are in : ${CMAKE_SOURCE_DIR}")
   message(STATUS " Project uses MPI : ${USE_MPI}")
diff --git a/HySoP/hysop/domain/topology.py b/HySoP/hysop/domain/topology.py
index d99ece672f73396be2c2ef59027de2fc4cef3685..f74b923fe5f2b0f465ab4b925f4fb56e2e5be493 100644
--- a/HySoP/hysop/domain/topology.py
+++ b/HySoP/hysop/domain/topology.py
@@ -15,7 +15,7 @@ class CartesianTopology(object):
     - dim : dimension of the topology
     - comm : MPI communicator used to create this topology
     - periods : periodicity of the topology (in each direction)
-    - ghosts : number of poinst in the ghost layer
+    - ghosts : number of points in the ghost layer
 
     """
     def __init__(self, domain, resolution, dim=None, dims=None, comm=MPI.COMM_WORLD, periods=None, ghosts=None):
diff --git a/HySoP/hysop/f2py/fftw2py.f90 b/HySoP/hysop/f2py/fftw2py.f90
new file mode 100755
index 0000000000000000000000000000000000000000..7e59d963dcb25149d1a8eccc92b70a12b5dc073d
--- /dev/null
+++ b/HySoP/hysop/f2py/fftw2py.f90
@@ -0,0 +1,42 @@
+
+!> Interface to mpi-fftw utilities
+module fftw2py
+
+  use poisson
+  use parmesparam
+    
+  implicit none
+
+contains
+  
+  subroutine initFFTW(resolution,lengths)
+    
+    !> GLOBAL resolution
+    integer, dimension(:), intent(in) :: resolution
+    !> Length of the domain
+    real(kind=pk),dimension(:),intent(in) :: lengths
+        
+    print *, "Initialize fftw poisson solver ..."
+    call initFFTW2D(resolution,lengths)    
+
+  end subroutine initFFTW
+
+  subroutine solve(resolution,fieldIn,res)
+    
+    integer, dimension(:), intent(in) :: resolution
+    real(kind=pk),dimension(6,6,1),intent(inout) :: fieldIn
+    real(kind=pk),dimension(6,6,1),intent(out) :: res
+   real(kind=pk),dimension(:,:,:,:),pointer :: dummy
+   
+    print *, "Start fftw-based poisson solver ..."
+
+!    allocate(fieldIn(resolution(1),resolution(2),1))
+    
+
+    call solvePoisson(fieldIn,dummy,resolution)
+    print *, "sol ... ", fieldIn
+    res(:,:,:) = fieldIn(:,:,:)
+
+  end subroutine solve
+
+end module fftw2py
diff --git a/HySoP/hysop/scales2py/scales2py.f90 b/HySoP/hysop/f2py/scales2py.f90
similarity index 77%
rename from HySoP/hysop/scales2py/scales2py.f90
rename to HySoP/hysop/f2py/scales2py.f90
index 74424b08fcca95610d34abc78a28b1c71f347449..d315a2f341f0842e1bdd22a2001e6ff5bc13efcd 100755
--- a/HySoP/hysop/scales2py/scales2py.f90
+++ b/HySoP/hysop/f2py/scales2py.f90
@@ -1,24 +1,23 @@
 !> Specific parameters for parmepy interface
 !! to deal with the problem explained here:
 !! http://projects.scipy.org/numpy/ticket/1835
-module parmepyparameters
-
-implicit none
-
-integer, parameter :: mk = 8
-integer, parameter :: dim3 = 3
-
-end module parmepyparameters
-
+!!$module parmepyparameters
+!!$
+!!$implicit none
+!!$
+!!$integer, parameter :: mk = 8
+!!$integer, parameter :: dim3 = 3
+!!$
+!!$end module parmepyparameters
+!!$
 !> Interface to scale code from Legi
 module scales2py
 
 use cart_topology, only : cart_create,set_group_size,discretisation_create,N_proc,coord,cart_rank
 use advec, only : advec_init,advec_step
 !!use precision, only : wp
-use parmepyparameters
 use mpi
-
+use parmesparam
 implicit none
 
 !! problem dimension
@@ -44,9 +43,9 @@ contains
   subroutine discretisationCreate(resolution,domainLengths)
     
     !! global resolution
-    integer, dimension(dim3),intent(in) :: resolution
+    integer, dimension(:),intent(in) :: resolution
     !! global domain dimensions
-    real(mk), dimension(dim3),intent(in) :: domainLengths
+    real(pk), dimension(:),intent(in) :: domainLengths
     
     call discretisation_create(resolution(1),resolution(2),resolution(3),domainLengths(1),domainLengths(2),domainLengths(3))
 
@@ -54,31 +53,35 @@ contains
 
   subroutine advecInit(order,stab_coeff)
     character(len=*), optional, intent(in)  ::  order
-    real(mk), optional, intent(inout)         ::  stab_coeff
+    real(pk), optional, intent(inout)         ::  stab_coeff
     
     call advec_init(order,stab_coeff)
    
   end subroutine advecInit
 
   subroutine getLocalResolution(resolution)
+
     integer,dimension(dim3),intent(out) :: resolution
 
     resolution = N_proc
+    
   end subroutine getLocalResolution
   
   subroutine getTopoCoords(topocoords)
+
     integer,dimension(dim3),intent(out) :: topocoords
 
     topocoords = coord
   end subroutine getTopoCoords
 
   subroutine advecStep(timeStep,Vx,Vy,Vz,scal,dim_split)
-    real(mk), intent(in)                        :: timeStep
-    real(mk), dimension(:,:,:), intent(in)      :: Vx, Vy, Vz
-    real(mk), dimension(:,:,:), intent(inout)   :: scal
+
+    real(pk), intent(in)                        :: timeStep
+    real(pk), dimension(:,:,:), intent(in)      :: Vx, Vy, Vz
+    real(pk), dimension(:,:,:), intent(inout)   :: scal
     character(len=*), optional, intent(in)      :: dim_split
     
-    real(mk) :: t0
+    real(pk) :: t0
 
     t0 = MPI_Wtime()
     call advec_step(timeStep,Vx,Vy,Vz,scal,dim_split)
diff --git a/HySoP/hysop/fftw2py/fftw2py.f90 b/HySoP/hysop/fftw2py/fftw2py.f90
deleted file mode 100755
index 5d1c1b7b54cb1460e2a9bec0de6e4aa86740099a..0000000000000000000000000000000000000000
--- a/HySoP/hysop/fftw2py/fftw2py.f90
+++ /dev/null
@@ -1,39 +0,0 @@
-!> Interface to mpi-fftw utilities
-module fftw2py
-
-use parmepyparameters
-!use poisson, only : testpoisson
-use poisson
-
-implicit none
-
-contains
-  
-  subroutine initFFTW(resolution,lengths)
-    
-    !> GLOBAL resolution
-    integer, dimension(3), intent(in) :: resolution
-    !> Length of the domain
-    real(kind=8),dimension(3),intent(in) :: lengths
-    print *, "ahahaha"
-        
-    call initFFTW2D(resolution,lengths)    
-    
-    print *, "ahahaha"
-
-  end subroutine initFFTW
-
-!!$  subroutine initFFTW(resolution,lengths)
-!!$    
-!!$    !> GLOBAL resolution
-!!$    integer, dimension(:), intent(in) :: resolution
-!!$    !> Length of the domain
-!!$    real(kind=8),dimension(:),intent(in) :: lengths
-!!$
-!!$    print *, "this is a call to fftw-mpi ..."
-!!$    
-!!$    call initfftw2d(resolution,lengths)
-!!$    
-!!$  end subroutine initFFTW
-
-end module fftw2py
diff --git a/HySoP/setup.py.in b/HySoP/setup.py.in
index 225d2665e333ad378c7f52d48ee4ea06210d682d..0a5fdf5f595a8a75fd8bb9b2495de1ef91a5e817 100644
--- a/HySoP/setup.py.in
+++ b/HySoP/setup.py.in
@@ -32,37 +32,32 @@ parmes_libdir = ['@CMAKE_BINARY_DIR@/src']
 parmeslib = ['@PARMES_LIBRARY_NAME@']
 f2py_options = ['--no-lower']
 
-scales_src = glob.glob('@CMAKE_SOURCE_DIR@/parmepy/scales2py/*.f90')
-scalesModule = Extension(name='parmepy.scales2py',
-                         f2py_options=f2py_options,
-                         sources=scales_src,
-                         include_dirs=inc_dir,
-                         library_dirs=parmes_libdir,
-                         libraries=parmeslib,
-                         define_macros=[('F2PY_REPORT_ON_ARRAY_COPY', '1')])
+## scales_src = glob.glob('@CMAKE_SOURCE_DIR@/parmepy/scales2py/*.f90')
+## scalesModule = Extension(name='parmepy.scales2py',
+##                          f2py_options=f2py_options,
+##                          sources=scales_src,
+##                          include_dirs=inc_dir,
+##                          library_dirs=parmes_libdir,
+##                          libraries=parmeslib,
+##                          define_macros=[('F2PY_REPORT_ON_ARRAY_COPY', '1')])
 
-ext_modules = [scalesModule]
-
-test_src = glob.glob('@CMAKE_SOURCE_DIR@/parmepy/testf2py/*.f90')
-testf2pyModule = Extension(name='parmepy.testf2py',
-                           f2py_options=f2py_options,
-                           sources=test_src,
-                           include_dirs=inc_dir,
-                           library_dirs=parmes_libdir,
-                           libraries=parmeslib,
-                           define_macros=[('F2PY_REPORT_ON_ARRAY_COPY', '1')])
-
-ext_modules.append(testf2pyModule)
+## ext_modules=[scalesModule]
 
+ext_modules =[]
 withfftw = "@WITH_FFTW@"
 if(withfftw is "ON"):
-    fortran_src = glob.glob('@CMAKE_SOURCE_DIR@/parmepy/fftw2py/*.f90')
+    #fortran_src = glob.glob('@CMAKE_SOURCE_DIR@/parmepy/f2py/*.f90')
+    fortran_dir = '@CMAKE_SOURCE_DIR@/parmepy/f2py/'
+    fortran_src = [fortran_dir+'parameters.f90',fortran_dir+'fftw2py.f90',fortran_dir+'scales2py.f90']
+        
+#    rep = '@CMAKE_SOURCE_DIR@/parmepy/f2py/'
+ #   fortran_src.insert(0,rep+'/parameters.f90')
     fftwdir = '@FFTWLIB@'
     fftwdir = os.path.split(fftwdir)[0]
     parmeslib.append('fftw3')
     parmeslib.append('fftw3_mpi')
     parmes_libdir.append(fftwdir)
-    parpyModule = Extension(name='parmepy.fftw2py',
+    parpyModule = Extension(name='parmepy.f2py',
                             f2py_options=f2py_options,
                             sources=fortran_src,
                             include_dirs=inc_dir,
diff --git a/HySoP/src/CMakeLists.txt b/HySoP/src/CMakeLists.txt
index 53beaa4519f6e29639ff3faaac81961d0c23e3a2..62487b93c35b5130e3f29191ef21b8b6a2caf595 100644
--- a/HySoP/src/CMakeLists.txt
+++ b/HySoP/src/CMakeLists.txt
@@ -16,8 +16,6 @@ set(EXE_NAME ${PARMES_LIBRARY_NAME}Run)
 set(${PARMES_LIBRARY_NAME}_SRCDIRS 
   .
   poisson
-  #src/interfaces/Fortran2Cpp
-  #  src/interfaces/ppm
   )
 # --- scales ---
 if(WITH_SCALES)