diff --git a/DP3-buildfix.patch b/DP3-buildfix.patch
index 0caed787ea6207e13ece56eedde2696af9443115..d6976f24c1f259b24a1b3921986bab8cdbe945e2 100644
--- a/DP3-buildfix.patch
+++ b/DP3-buildfix.patch
@@ -1,40 +1,8 @@
-commit 6d66554bcd1e6fbd0362d6805ccc0f0ca19e518d
-Author: Dr. Thomas Orgis <thomas.orgis@uni-hamburg.de>
-Date:   Tue Jun 9 17:32:41 2020 +0200
-
-    build: fixup python search and support BLAS_LIBS, LAPACK_LIBS
-    
-    This is a set of changes we carry at Universität Hamburg to get
-    the LOFAR toolchain built. I hope it can be included upstream.
-    
-    Important points are:
-    
-    -  Use current (less deprecated) cmake ways to detect python.
-    -  Less redundancy in Python checking in CMakeLists at deeper level
-       (Always try to build PythonDPPP as Python and Boost is required
-       anyway.)
-    -  Add support for BLAS_LIBS and LAPACK_LIBS, as this is
-       customary in HPC installations to choose the (optimized) BLAS
-        implementation in an environment that offers multiple options.
-    
-    The last point is repeated in other patches we carry for the LOFAR
-    stack. Maybe the common source for the FindCasacore code should
-    be patched instead?
-
 diff --git a/CMake/FindCasacore.cmake b/CMake/FindCasacore.cmake
-index e4689f7..9068fdd 100644
+index e4689f7..d6838fa 100644
 --- a/CMake/FindCasacore.cmake
 +++ b/CMake/FindCasacore.cmake
-@@ -17,6 +17,8 @@
- #
- # Variables used by this module:
- #  CASACORE_ROOT_DIR         - Casacore root directory. 
-+#  BLAS_LIBS                 - override BLAS library
-+#  LAPACK_LIBS               - override LAPACK library
- #
- # Variables defined by this module:
- #  CASACORE_FOUND            - System has Casacore, which means that the
-@@ -232,7 +234,21 @@ else(NOT CASACORE_INCLUDE_DIR)
+@@ -232,7 +232,21 @@ else(NOT CASACORE_INCLUDE_DIR)
      elseif(${_comp} STREQUAL fits)
        casacore_find_package(CFITSIO REQUIRED)
      elseif(${_comp} STREQUAL scimath_f)
@@ -58,16 +26,14 @@ index e4689f7..9068fdd 100644
    endforeach(_comp ${_find_components})
  endif(NOT CASACORE_INCLUDE_DIR)
 diff --git a/CMake/PythonInstall.cmake b/CMake/PythonInstall.cmake
-index 173f995..a1357c7 100644
+index 173f995..9fb1b57 100644
 --- a/CMake/PythonInstall.cmake
 +++ b/CMake/PythonInstall.cmake
-@@ -24,10 +24,11 @@
+@@ -24,10 +24,9 @@
  # $Id: PythonInstall.cmake 32905 2015-11-17 15:31:54Z schaap $
  
  # Search for the Python interpreter.
 -find_package(PythonInterp)
-+# No. We expect the toplevel CMakeLists.txt to have found python already!
-+#find_package(PythonInterp)
  
  # Derive the Python site-packages installation directory and build directory.
 -if(PYTHON_EXECUTABLE)
@@ -75,7 +41,7 @@ index 173f995..a1357c7 100644
    set(_cmd
      "from distutils.sysconfig import get_python_lib"
      "from os.path import join"
-@@ -36,7 +37,7 @@ if(PYTHON_EXECUTABLE)
+@@ -36,7 +35,7 @@ if(PYTHON_EXECUTABLE)
         'site-packages'))"
    )
    execute_process(
@@ -84,7 +50,7 @@ index 173f995..a1357c7 100644
      OUTPUT_VARIABLE _pydir
      ERROR_VARIABLE _pyerr
      OUTPUT_STRIP_TRAILING_WHITESPACE)
-@@ -57,7 +58,7 @@ if(PYTHON_EXECUTABLE)
+@@ -57,7 +56,7 @@ if(PYTHON_EXECUTABLE)
      message(STATUS "Build directory for Python extensions:        ${PYTHON_BUILD_DIR}")
      message(STATUS "Installation directory for Python extensions: ${PYTHON_INSTALL_DIR}")
    endif()
@@ -93,7 +59,7 @@ index 173f995..a1357c7 100644
  
  
  #
-@@ -66,9 +67,9 @@ endif(PYTHON_EXECUTABLE)
+@@ -66,9 +65,9 @@ endif(PYTHON_EXECUTABLE)
  macro(python_install)
  
    # Precondition check.
@@ -105,11 +71,20 @@ index 173f995..a1357c7 100644
  
    # Parse arguments.
    # apart from the python files list, there are two additional arguments
+@@ -125,7 +124,7 @@ macro(python_install)
+         "print('-- Byte-compiling: %s${_inst_dir}/${_py}' % destdir)"
+         "py_compile.compile('%s${DESTDIR}${_inst_dir}/${_py}' % destdir, doraise=True)")
+       install(CODE 
+-        "execute_process(COMMAND ${PYTHON_EXECUTABLE} -c \"${_py_code}\"
++        "execute_process(COMMAND ${Python3_EXECUTABLE} -c \"${_py_code}\"
+                        RESULT_VARIABLE _result)
+        if(NOT _result EQUAL 0)
+          message(FATAL_ERROR \"Byte-compilation FAILED: \$ENV{DESTDIR}${_inst_dir}/${_py}\")
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 2943e17..ae2c423 100644
+index 8025cdb..ac9bb03 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -44,13 +44,14 @@ endif(IDGAPI_LIBRARIES AND IDGAPI_INCLUDE_DIRS)
+@@ -46,13 +46,13 @@ endif(IDGAPI_LIBRARIES AND IDGAPI_INCLUDE_DIRS)
  
  find_package(CFITSIO REQUIRED)
  
@@ -118,9 +93,8 @@ index 2943e17..ae2c423 100644
 -message(STATUS "Using python version ${PYTHON_VERSION_STRING}")
 +find_package(Python3 COMPONENTS Interpreter Development)
 +message(STATUS "Using python version ${Python3_VERSION}")
-+
-+include_directories(${Python3_INCLUDE_DIRS})
  
++include_directories(${Python3_INCLUDE_DIRS})
  #Prevent accidentally finding old BoostConfig.cmake file from casapy
  set(Boost_NO_BOOST_CMAKE ON)
 -set(BOOSTPY ${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR})
@@ -128,46 +102,45 @@ index 2943e17..ae2c423 100644
  find_package(Boost COMPONENTS date_time filesystem python${BOOSTPY} numpy${BOOSTPY} program_options system unit_test_framework REQUIRED)
  include_directories(${Boost_INCLUDE_DIR})
  
-@@ -236,7 +237,7 @@ set(EXTRA_LIBRARIES ${EXTRA_LIBRARIES}
+@@ -220,7 +220,7 @@ set(EXTRA_LIBRARIES
+   ${AOFLAGGER_LIB}
    ${CASACORE_LIBRARIES}
    ${Boost_LIBRARIES}
-   ${EXTRA_LIBRARIES}
 -  ${PYTHON_LIBRARIES}
 +  ${Python3_LIBRARIES}
    ${IDGAPI_LIBRARIES}
    Threads::Threads)
-   
+ 
 diff --git a/PythonDPPP/CMakeLists.txt b/PythonDPPP/CMakeLists.txt
-index 72fe59a..7e4bcad 100644
+index 72fe59a..69f9fb8 100644
 --- a/PythonDPPP/CMakeLists.txt
 +++ b/PythonDPPP/CMakeLists.txt
-@@ -1,5 +1,5 @@
+@@ -1,5 +1,4 @@
 -# If Boost-Python3 found, build this package. Otherwise give a warning.
 -if(${Boost_PYTHON${BOOSTPY}_FOUND})
-+# We set Boost-python as required in toplevel build file.
 +if(TRUE)
  
    include(PythonInstall)
  
-@@ -25,20 +25,7 @@ if(${Boost_PYTHON${BOOSTPY}_FOUND})
+@@ -25,20 +24,6 @@ if(${Boost_PYTHON${BOOSTPY}_FOUND})
    # Install Python modules
    python_install(__init__.py DESTINATION lofar/pythondppp)
  
 -	find_package(PythonInterp REQUIRED)
 -  find_package(PythonLibs 3 REQUIRED)
 -  include_directories(${PYTHON_INCLUDE_DIRS})
--
++  find_package(Casacore COMPONENTS python3)
+ 
 -  if(${PYTHON_VERSION_MAJOR} EQUAL 2)
 -    find_package(Casacore COMPONENTS python)
 -  else()
 -    find_package(Casacore COMPONENTS python3)
 -  endif()
-+  find_package(Casacore COMPONENTS python3)
-   
+-  
 -  find_package(Boost REQUIRED COMPONENTS python${BOOSTPY})
 -  include_directories(${Boost_INCLUDE_DIR})
 -
- #  add_subdirectory(test)
+-#  add_subdirectory(test)
 -else()
 -  message (WARNING, " Boost-Python not found; PythonDPPP will not be built.")
  endif()
diff --git a/LOFARBeam-buildfix.patch b/LOFARBeam-buildfix.patch
index 8ffcbabfa27f25e5ec361b99e735481e2c261bbc..f2dbdbbc6f544e7519391c474090247f30de9893 100644
--- a/LOFARBeam-buildfix.patch
+++ b/LOFARBeam-buildfix.patch
@@ -34,3 +34,18 @@ index 51d8339..299530f 100644
      endif(${_comp} STREQUAL casa)
    endforeach(_comp ${_find_components})
  endif(NOT CASACORE_INCLUDE_DIR)
+
+# Required to find boost python stuff
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index bd1de34..c17d181 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -82,6 +82,7 @@ if (BUILD_PYTHON)
+     set(oldboostpy "3")
+   endif()
+   set(boostpy ${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR})
++  set(Boost_NO_BOOST_CMAKE ON) 
+   message(STATUS "Trying to find boost-python libraries with version suffix ${boostpy}")
+   find_package(Boost 1.67.0 COMPONENTS python${boostpy} numpy${boostpy})
+   if(NOT Boost_FOUND)
+ 	message(STATUS "GTKMM found.") 
diff --git a/aoflagger-buildfix.patch b/aoflagger-buildfix.patch
deleted file mode 100644
index 3ba3cd0c1e1103b65679e93c674b2ef79f2aa00f..0000000000000000000000000000000000000000
--- a/aoflagger-buildfix.patch
+++ /dev/null
@@ -1,150 +0,0 @@
-diff --git a/CMake/FindCasacore.cmake b/CMake/FindCasacore.cmake
-index e4689f7..9068fdd 100644
---- a/CMake/FindCasacore.cmake
-+++ b/CMake/FindCasacore.cmake
-@@ -17,6 +17,8 @@
- #
- # Variables used by this module:
- #  CASACORE_ROOT_DIR         - Casacore root directory. 
-+#  BLAS_LIBS                 - override BLAS library
-+#  LAPACK_LIBS               - override LAPACK library
- #
- # Variables defined by this module:
- #  CASACORE_FOUND            - System has Casacore, which means that the
-@@ -232,7 +234,21 @@ else(NOT CASACORE_INCLUDE_DIR)
-     elseif(${_comp} STREQUAL fits)
-       casacore_find_package(CFITSIO REQUIRED)
-     elseif(${_comp} STREQUAL scimath_f)
--      casacore_find_package(LAPACK REQUIRED)
-+      # If only looking for LAPACK, no library will be added if LAPACK
-+      # is part of BLAS, as it is customary nowadays. So look for both
-+      # to avoid confusing linker errors on symbols used in headers/templates.
-+      if(DEFINED ENV{BLAS_LIBS})
-+        set(BLAS_FOUND YES)
-+        list(APPEND CASACORE_LIBRARIES $ENV{BLAS_LIBS})
-+      else()
-+        casacore_find_package(BLAS   REQUIRED)
-+      endif()
-+      if(DEFINED ENV{LAPACK_LIBS})
-+        set(LAPACK_FOUND YES)
-+        list(APPEND CASACORE_LIBRARIES $ENV{LAPACK_LIBS})
-+      else()
-+        casacore_find_package(LAPACK REQUIRED)
-+      endif()
-     endif(${_comp} STREQUAL casa)
-   endforeach(_comp ${_find_components})
- endif(NOT CASACORE_INCLUDE_DIR)
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index fd1d7c7..4dd733c 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -19,27 +19,61 @@ find_package(CFITSIO REQUIRED)
- find_path(FFTW3_INCLUDE_DIR NAMES fftw3.h)
- 
- find_library(GSL_LIB NAMES gsl)
--find_library(GSL_CBLAS_LIB NAMES gslcblas)
-+if(DEFINED ENV{CBLAS_LIBS})
-+  message(STATUS "Using CBLAS_LIBS from environment: $ENV{CBLAS_LIBS}")
-+  set(GSL_CBLAS_LIB $ENV{CBLAS_LIBS})
-+else()
-+  find_library(GSL_CBLAS_LIB NAMES gslcblas)
-+endif()
- find_path(GSL_INCLUDE_DIR NAMES gsl/gsl_version.h)
- 
- find_package(Threads REQUIRED)
- find_package(LibXml2 REQUIRED)
- find_package(PNG REQUIRED)
-+find_package(Python COMPONENTS Interpreter Development)
-+if(NOT Python_FOUND)
-+  message(STATUS "Falling back to deprecated Python search.")
-+  find_package(PythonInterp REQUIRED)
-+  find_package(PythonLibs REQUIRED)
-+  set(Python_VERSION ${PYTHON_VERSION_STRING})
-+  set(Python_VERSION_MAJOR ${PYTHON_VERSION_MAJOR})
-+  set(Python_VERSION_MINOR ${PYTHON_VERSION_MINOR})
-+  set(Python_LIBRARIES ${PYTHON_LIBRARIES})
-+  set(Python_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS})
-+endif()
-+message(STATUS "Using python version ${Python_VERSION}")
- #Prevent accidentally finding old BoostConfig.cmake file from casapy
- set(Boost_NO_BOOST_CMAKE ON)
--#set(PY_VERSION 3)
--#find_package(PythonLibs ${PY_VERSION} REQUIRED)
--find_package(PythonInterp REQUIRED)
--#find_package(PythonLibs ${PYTHON_VERSION_STRING} REQUIRED)
--find_package(PythonLibs 2.7 REQUIRED)
--#message(STATUS "Using python version ${PYTHON_VERSION_STRING}")
- # At least the intrusive_ref_counter needs Boost 1.55 (because the header was moved)
--find_package(Boost 1.55.0 REQUIRED COMPONENTS date_time filesystem python system)
--#find_package(Boost REQUIRED COMPONENTS date_time filesystem python-py36 system)
-+# Bumped to 1.67 to be able to use proper python suffix. One attempt
-+# to support at least two boost_python naming schemes here.
-+set(boostpython python${Python_VERSION_MAJOR}${Python_VERSION_MINOR})
-+find_package(Boost 1.67.0 COMPONENTS date_time filesystem ${boostpython} system)
-+if(NOT Boost_FOUND)
-+  message(STATUS "Falling back to old Boost search.")
-+  set(boostpython python)
-+  find_package(Boost 1.55.0  REQUIRED COMPONENTS date_time filesystem ${boostpython} system)
-+endif()
-+
- find_library(FFTW3_LIB fftw3 REQUIRED)
-+# Not sure if this is needed everywhere, but I get linker
-+# errors with missing symbols if not explicitly linking to fftw3_threads.
-+find_library(FFTW3_THREADS_LIB fftw3_threads OPTIONAL)
- enable_language(Fortran OPTIONAL)
--find_package(BLAS REQUIRED)
--find_package(LAPACK REQUIRED)
-+if(DEFINED ENV{BLAS_LIBS})
-+  message(STATUS "Using BLAS_LIBS from environment: $ENV{BLAS_LIBS}")
-+  set(BLAS_FOUND YES)
-+  set(BLAS_LIBRARIES $ENV{BLAS_LIBS})
-+else()
-+  find_package (BLAS REQUIRED)
-+endif()
-+if(DEFINED ENV{LAPACK_LIBS})
-+  message(STATUS "Using LAPACK_LIBS from environment: $ENV{LAPACK_LIBS}")
-+  set(LAPACK_FOUND YES)
-+  set(LAPACK_LIBRARIES $ENV{LAPACK_LIBS})
-+else()
-+  find_package (LAPACK REQUIRED)
-+endif()
- if(CMAKE_SYSTEM_NAME MATCHES "Linux")
-   find_library(RT_LIBRARY rt)
- #  list(APPEND LOFAR_EXTRA_LIBRARIES ${RT_LIBRARY})
-@@ -53,7 +87,7 @@ include_directories(${FFTW3_INCLUDE_DIR})
- if(GSL_INCLUDE_DIR)
- 	include_directories(${GSL_INCLUDE_DIR})
- endif(GSL_INCLUDE_DIR)
--include_directories(${PYTHON_INCLUDE_DIRS})
-+include_directories(${Python_INCLUDE_DIRS})
- 
- # The following stuff will set the "rpath" correctly, so that
- # LD_LIBRARY_PATH doesn't have to be set.
-diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
-index 4a36e1c..55713b2 100644
---- a/src/CMakeLists.txt
-+++ b/src/CMakeLists.txt
-@@ -235,17 +235,17 @@ set(PYTHON_FILES
- 
- set(ALL_LIBRARIES
- 	${BLAS_LIBRARIES} ${LAPACK_LIBRARIES}
--	${Boost_SYSTEM_LIBRARY}
--	${Boost_FILESYSTEM_LIBRARY} ${Boost_DATE_TIME_LIBRARY}
--#	${Boost_PYTHON-PY36_LIBRARIES}
--	${Boost_PYTHON_LIBRARIES}
--	${FFTW3_LIB}
-+	Boost::system
-+	Boost::filesystem
-+	Boost::date_time
-+	Boost::${boostpython}
-+	${FFTW3_THREADS_LIB} ${FFTW3_LIB}
- 	${CASACORE_LIBRARIES}
- 	${LAPACK_lapack_LIBRARY}
- 	${CFITSIO_LIBRARY}
- 	${CMAKE_THREAD_LIBS_INIT}
- 	${PNG_LIBRARIES} ${LIBXML2_LIBRARIES}
--	${PYTHON_LIBRARIES})
-+	${Python_LIBRARIES})
- 
- if(GTKMM_FOUND)
- 	message(STATUS "GTKMM found.") 
diff --git a/build_lofar.sh b/build_lofar.sh
old mode 100644
new mode 100755
index 44bd165e1a12bbe14afe077a15a77f3f9ee2ee53..648527362b59800ae28be9c22b6ae4bef0431e8d
--- a/build_lofar.sh
+++ b/build_lofar.sh
@@ -410,12 +410,12 @@ if [ ! -e $prefix/.done ]; then
     if [ -e src ]; then
         echo "Using existing sources."
     else
-        git clone git://git.code.sf.net/p/aoflagger/code presrc
+        git clone https://gitlab.com/aroffringa/aoflagger.git presrc
         if [ "$aoflagger_version" != "latest" ]; then
             ( cd presrc && git checkout tags/v$aoflagger_version )
         fi &&
-        echo "Patching build (for BLAS, Boost, Python, usually) ..." && 
-        (cd presrc && patch -Np1 < "$scriptdir/aoflagger-buildfix.patch" ) &&
+        #echo "Patching build (for BLAS, Boost, Python, usually) ..." && 
+        #(cd presrc && patch -Np1 < "$scriptdir/aoflagger-buildfix.patch" ) &&
         mv presrc src
     fi &&
     mkdir build &&
@@ -438,6 +438,35 @@ else
     echo AOFlagger already installed.
 fi >> "$prefix/build.log" 2>&1 || exit 1
 
+begin_pkg EveryBeam
+if [ ! -e $prefix/.done ]; then
+    #
+    # Install the standalone StationResponse libraries.
+    #
+    echo Installing EveryBeam...
+    cd $prefix &&
+    rm -rf build bin lib presrc &&
+    if [ -e src ]; then
+        echo "Using existing sources."
+    else
+        git clone https://git.astron.nl/RD/EveryBeam.git presrc
+        #echo "Patching build (for BLAS, Boost, Python, usually) ..." && 
+        #(cd presrc && patch -Np1 < "$scriptdir/EveryBeam-buildfix.patch" ) &&
+        mv presrc src
+    fi &&
+    mkdir build &&
+    cd    build &&
+    use_prefix $lofar_prefix/casacore $prefix &&
+    run_cmake \
+        -DCASACORE_ROOT_DIR=$lofar_prefix/casacore \
+        -DCMAKE_INSTALL_PREFIX=$prefix \
+        ../src &&
+    make -j $J &&
+    make install &&
+    echo Done with EveryBeam. &&
+    touch $prefix/.done
+fi >> "$prefix/build.log" 2>&1 || exit 1
+
 begin_pkg LOFARBeam
 if [ ! -e $prefix/.done ]; then
     #
@@ -519,8 +548,11 @@ if [ ! -e $prefix/.done ]; then
         echo "Using existing sources."
     else
         git clone https://github.com/lofar-astron/DP3.git presrc &&
-        echo "Patching build (for BLAS, Boost, Python, usually) ..." && 
-        (cd presrc && patch -Np1 < "$scriptdir/DP3-buildfix.patch" ) &&
+        if [ "$dp3_version" != "latest" ]; then
+            ( cd presrc && git checkout tags/v$dp3_version )
+        fi
+        #    echo "Patching build (for BLAS, Boost, Python, usually) ..." && 
+        #(cd presrc && patch -Np1 < "$scriptdir/DP3-buildfix.patch" ) &&
         mv presrc src
     fi &&
     mkdir build &&
@@ -528,7 +560,7 @@ if [ ! -e $prefix/.done ]; then
     use_prefix \
       $lofar_prefix/casacore \
       $lofar_prefix/idg \
-      $lofar_prefix/LOFARBeam \
+      $lofar_prefix/EveryBeam \
       $lofar_prefix/aoflagger \
       $prefix &&
     # ThOr: It's braindead that I still have to provide things like
@@ -578,8 +610,8 @@ if [ ! -e $prefix/.done ]; then
         else
             git clone git://git.code.sf.net/p/wsclean/code presrc
         fi &&
-        echo "Patching build (for BLAS, Boost, Python, usually) ..." &&
-        (cd presrc && patch -Np1 < "$scriptdir/$pkg-buildfix.patch" ) &&
+        #echo "Patching build (for BLAS, Boost, Python, usually) ..." &&
+        #(cd presrc && patch -Np1 < "$scriptdir/$pkg-buildfix.patch" ) &&
         mv presrc src
     fi &&
     mkdir build &&
diff --git a/build_lofar.sh.config.rrz b/build_lofar.sh.config.rrz
index b6b5b8d5258bb8afde5e5a9857f77b7d11988a61..83132c6e126a1aac28e39eb4df22f39866e3af6f 100644
--- a/build_lofar.sh.config.rrz
+++ b/build_lofar.sh.config.rrz
@@ -1,17 +1,29 @@
 # The setup on the Hamburg LOFAR GPU Cluster.
 
-aoflagger_version=2.14.0
+# 2021 01 11:
+# This configuration worked, using the following versions:
+#aoflagger_version=3.0.2 
+#casacore_version=3.3.0
+#dysco_version=1.2.0
+#pybdsf_version=1.9.2
+#pycasa_version=3.1.1
+#wsclean_version=2.10
+#dp3_version=5.0.2
+
+aoflagger_version=latest 
 casacore_version=3.3.0
 dysco_version=1.2.0
 pybdsf_version=latest # weird C++ template error with 1.8.12
 pycasa_version=3.1.1
 wsclean_version=latest
+dp3_version=latest
 
 # This gives us CUDA, gcc, Open MPI and dependencies
 # from pkgsrc in separate prefixes.
 
 . /sw/profile/init.sh
-module switch env env/2019Q4-cuda-gcc-openmpi
+module use /sw/TEST
+module switch env env/2020Q3-cuda-gcc-openmpi
 module load pythonversion/3
 # You could experiment with idg using MKL, but it is recommened
 # to try a consistent environment where everyone agrees on using