diff --git a/install/dependencies/conda-recipes/astra-toolbox/build.sh b/install/dependencies/conda-recipes/astra-toolbox/build.sh
new file mode 100644
index 000000000..417b65cdb
--- /dev/null
+++ b/install/dependencies/conda-recipes/astra-toolbox/build.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+nvcc=`command -v nvcc`
+cuda=${nvcc%/bin/nvcc}
+
+cd $SRC_DIR/build/linux
+chmod +x autogen.sh
+./autogen.sh
+
+if [ "$cuda" ]; then
+  ./configure --with-cuda=$cuda \
+              --with-python \
+              --with-install-type=module
+else
+    echo "cuda has not been found will configure without it."
+    ./configure --with-python \
+                --with-install-type=module
+fi
+
+make -j 4
+make install
diff --git a/install/dependencies/conda-recipes/astra-toolbox/meta.yaml b/install/dependencies/conda-recipes/astra-toolbox/meta.yaml
new file mode 100644
index 000000000..b0c16d074
--- /dev/null
+++ b/install/dependencies/conda-recipes/astra-toolbox/meta.yaml
@@ -0,0 +1,34 @@
+package:
+  name: astra-toolbox
+  version: '1.9.9dev'
+
+source:
+  git_url: https://github.com/astra-toolbox/astra-toolbox.git
+  git_tag: master
+
+build:
+  number: 0
+  script_env:
+    - CC # [linux]
+
+requirements:
+  build:
+    - python
+    - numpy
+    - cython >=0.13
+    - nomkl # [not win]
+    - scipy
+    - cudatoolkit >=10.1
+    - six
+
+run:
+    - python
+    - numpy
+    - scipy
+    - six
+    - libastra ==1.9.9dev
+
+about:
+  home: http://www.astra-toolbox.com
+  license: GPLv3
+  summary: 'The ASTRA Toolbox is a Python toolbox of high-performance GPU primitives for 2D and 3D tomography.'
diff --git a/install/dependencies/conda-recipes/geodist/conda_build_config.yaml b/install/dependencies/conda-recipes/geodist/conda_build_config.yaml
new file mode 100644
index 000000000..16cc975b8
--- /dev/null
+++ b/install/dependencies/conda-recipes/geodist/conda_build_config.yaml
@@ -0,0 +1,2 @@
+python:
+    - 3.9
diff --git a/install/dependencies/conda-recipes/geodist/meta.yaml b/install/dependencies/conda-recipes/geodist/meta.yaml
new file mode 100644
index 000000000..6aa8fb7bb
--- /dev/null
+++ b/install/dependencies/conda-recipes/geodist/meta.yaml
@@ -0,0 +1,36 @@
+{% set name = 'geodistk' %}
+{% set version = '0.1.6' %}
+
+package:
+  name: {{ name | lower }}
+  version: {{ version }}
+
+
+source:
+  git_url: https://github.com/taigw/GeodisTK.git
+  git_tag: master
+
+requirements:
+  build:
+    - python {{ python }}
+    - numpy
+  run:
+    - python {{ python }}
+    - numpy
+
+build:
+  number: 0
+  script:
+    - {{ PYTHON }} -m pip install .
+
+test:
+  imports:
+    - GeodisTK
+
+app:
+  summary: "Geodesic distance transform of 2d/3d images"
+
+about:
+  home: https://github.com/taigw/GeodisTK
+  license: MIT
+  license_file: LICENSE
diff --git a/install/savu_hpc/conda-recipes/h5py/build.sh b/install/dependencies/conda-recipes/h5py/build.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/h5py/build.sh
rename to install/dependencies/conda-recipes/h5py/build.sh
diff --git a/install/savu_hpc/conda-recipes/h5py/meta.yaml b/install/dependencies/conda-recipes/h5py/meta.yaml
similarity index 100%
rename from install/savu_hpc/conda-recipes/h5py/meta.yaml
rename to install/dependencies/conda-recipes/h5py/meta.yaml
diff --git a/install/savu_hpc/conda-recipes/hdf5/build.sh b/install/dependencies/conda-recipes/hdf5/build.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/hdf5/build.sh
rename to install/dependencies/conda-recipes/hdf5/build.sh
diff --git a/install/savu_hpc/conda-recipes/hdf5/meta.yaml b/install/dependencies/conda-recipes/hdf5/meta.yaml
similarity index 100%
rename from install/savu_hpc/conda-recipes/hdf5/meta.yaml
rename to install/dependencies/conda-recipes/hdf5/meta.yaml
diff --git a/install/savu_hpc/conda-recipes/hdf5/setup_hdf5_build.sh b/install/dependencies/conda-recipes/hdf5/setup_hdf5_build.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/hdf5/setup_hdf5_build.sh
rename to install/dependencies/conda-recipes/hdf5/setup_hdf5_build.sh
diff --git a/install/savu_hpc/conda-recipes/installer.sh b/install/dependencies/conda-recipes/installer.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/installer.sh
rename to install/dependencies/conda-recipes/installer.sh
diff --git a/install/dependencies/conda-recipes/morphsnakes/conda_build_config.yaml b/install/dependencies/conda-recipes/morphsnakes/conda_build_config.yaml
new file mode 100644
index 000000000..16cc975b8
--- /dev/null
+++ b/install/dependencies/conda-recipes/morphsnakes/conda_build_config.yaml
@@ -0,0 +1,2 @@
+python:
+    - 3.9
diff --git a/install/dependencies/conda-recipes/morphsnakes/meta.yaml b/install/dependencies/conda-recipes/morphsnakes/meta.yaml
new file mode 100644
index 000000000..95ea6996b
--- /dev/null
+++ b/install/dependencies/conda-recipes/morphsnakes/meta.yaml
@@ -0,0 +1,37 @@
+{% set name = 'morphsnakes' %}
+{% set version = '1.0' %}
+
+package:
+  name: {{ name | lower }}
+  version: {{ version }}
+
+source:
+  git_url: https://github.com/pmneila/morphsnakes.git
+  git_tag: master
+
+requirements:
+  build:
+    - python {{ python }}
+    - numpy
+    - scipy>=0.17.0
+  run:
+    - python {{ python }}
+    - numpy
+    - scipy>=0.17.0
+
+build:
+  number: 0
+  script:
+    - {{ PYTHON }} -m pip install .
+
+test:
+  imports:
+    - morphsnakes
+
+app:
+  summary: "Morphological Snakes for image segmentation. morphsnakes supports 2D images and 3D volumes"
+
+about:
+  home: https://github.com/pmneila/morphsnakes
+  license: MIT
+  license_file: LICENSE
diff --git a/install/savu_hpc/conda-recipes/mpi4py/build.sh b/install/dependencies/conda-recipes/mpi4py/build.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/mpi4py/build.sh
rename to install/dependencies/conda-recipes/mpi4py/build.sh
diff --git a/install/savu_hpc/conda-recipes/mpi4py/helloworld.py b/install/dependencies/conda-recipes/mpi4py/helloworld.py
similarity index 100%
rename from install/savu_hpc/conda-recipes/mpi4py/helloworld.py
rename to install/dependencies/conda-recipes/mpi4py/helloworld.py
diff --git a/install/savu_hpc/conda-recipes/mpi4py/meta.yaml b/install/dependencies/conda-recipes/mpi4py/meta.yaml
similarity index 100%
rename from install/savu_hpc/conda-recipes/mpi4py/meta.yaml
rename to install/dependencies/conda-recipes/mpi4py/meta.yaml
diff --git a/install/savu_hpc/conda-recipes/mpi4py/mpiexec.sh b/install/dependencies/conda-recipes/mpi4py/mpiexec.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/mpi4py/mpiexec.sh
rename to install/dependencies/conda-recipes/mpi4py/mpiexec.sh
diff --git a/install/savu_hpc/conda-recipes/mpi4py/run_test.sh b/install/dependencies/conda-recipes/mpi4py/run_test.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/mpi4py/run_test.sh
rename to install/dependencies/conda-recipes/mpi4py/run_test.sh
diff --git a/install/savu_hpc/conda-recipes/pmacparser/recipe/build.sh b/install/dependencies/conda-recipes/pmacparser/build.sh
similarity index 100%
rename from install/savu_hpc/conda-recipes/pmacparser/recipe/build.sh
rename to install/dependencies/conda-recipes/pmacparser/build.sh
diff --git a/install/savu_hpc/conda-recipes/pmacparser/recipe/meta.yaml b/install/dependencies/conda-recipes/pmacparser/meta.yaml
similarity index 100%
rename from install/savu_hpc/conda-recipes/pmacparser/recipe/meta.yaml
rename to install/dependencies/conda-recipes/pmacparser/meta.yaml
diff --git a/install/dependencies/conda-recipes/pypwt/conda-recipe/build.sh b/install/dependencies/conda-recipes/pypwt/conda-recipe/build.sh
new file mode 100644
index 000000000..d3c2cb4ea
--- /dev/null
+++ b/install/dependencies/conda-recipes/pypwt/conda-recipe/build.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+python setup.py install
diff --git a/install/dependencies/conda-recipes/pypwt/conda-recipe/meta.yaml b/install/dependencies/conda-recipes/pypwt/conda-recipe/meta.yaml
new file mode 100644
index 000000000..bb78d25fb
--- /dev/null
+++ b/install/dependencies/conda-recipes/pypwt/conda-recipe/meta.yaml
@@ -0,0 +1,31 @@
+{% set version = "0.9" %}
+
+package:
+  name: pypwt
+  version: {{ version }}_{{ environ['CUDA_VERSION'] }}
+
+source:
+  url: https://github.com/dkazanc/pypwt/archive/{{ version }}.tar.gz
+
+requirements:
+  build:
+    - python
+    - pip
+    - numpy
+    - setuptools
+    - cython >=0.13
+    - cudatoolkit={{ environ['CUDA_VERSION'] }}
+
+  run:
+    - python
+    - numpy
+    - setuptools
+
+build:
+  preserve_egg_dir: False
+  number: 0
+
+about:
+  home: https://github.com/pierrepaleo/pypwt
+  license: Apache V2 and GPL V3
+  summary: 'pypwt is a python module for parallel Discrete Wavelet Transform. This is a wrapper of PDWT.'
diff --git a/install/savu_hpc/conda-recipes/tomophantom/build.sh b/install/savu_hpc/conda-recipes/tomophantom/build.sh
deleted file mode 100644
index 774f342f7..000000000
--- a/install/savu_hpc/conda-recipes/tomophantom/build.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-mkdir -p ${SRC_DIR}/tomophantom
-cd tomophantom
-
-#issue cmake to create setup.py
-cmake -G "Unix Makefiles" ../ -DBUILD_PYTHON_WRAPPER=ON -DCONDA_BUILD=ON -DCMAKE_BUILD_TYPE="Release" -DLIBRARY_LIB=$CONDA_PREFIX/lib -DLIBRARY_INC=$CONDA_PREFIX -DCMAKE_INSTALL_PREFIX=$PREFIX
-make install
-
diff --git a/install/savu_hpc/conda-recipes/tomophantom/meta.yaml b/install/savu_hpc/conda-recipes/tomophantom/meta.yaml
deleted file mode 100644
index e85796d70..000000000
--- a/install/savu_hpc/conda-recipes/tomophantom/meta.yaml
+++ /dev/null
@@ -1,36 +0,0 @@
-{% set CIL_VERSION = "1.4.7" %}
-
-package:
-  name: tomophantom
-  version: {{ CIL_VERSION }}
-
-source:
-  url: https://github.com/dkazanc/TomoPhantom/archive/v{{ CIL_VERSION }}.tar.gz
-
-
-build:
-  preserve_egg_dir: False
-  number: 0
-  script_env:
-    - CIL_VERSION={{ CIL_VERSION }}
-
-requirements:
-  build:
-    - python
-    - numpy
-    - setuptools
-    - cython
-    - cmake
-    - blas=*=openblas # [not win]
-
-
-  run:
-    - {{ pin_compatible('numpy', max_pin='x.x') }}
-    - python
-    - numpy
-    - libgcc-ng # [unix]
-
-about:
-  home: https://github.com/dkazanc/TomoPhantom
-  license:  Apache 2.0 license
-  summary: 'Tomography Phantom Data generator'
diff --git a/install/savu_lite37/condabuild/meta.yaml b/install/savu_lite37/condabuild/meta.yaml
deleted file mode 100644
index 59198750c..000000000
--- a/install/savu_lite37/condabuild/meta.yaml
+++ /dev/null
@@ -1,93 +0,0 @@
-{% set repo = "master" %}
-
-package:
-  name: savu-lite
-  version: {{ environ['VERSION'] }}
-
-source:
-  url: https://github.com/DiamondLightSource/Savu/archive/{{ repo }}.tar.gz
-
-build:
-  preserve_egg_dir: True
-  number: 0
-  script: python setup.py install
-
-requirements:
-  host:
-    - python
-    - pip
-    - wheel
-
-  run:
-    - python
-    - ipython
-    - numpy
-    - tomopy 1.9.1 py37h8342161_101
-    - hdf5 1.10.5
-    - openmpi 4.0.2 hb1b8bf9_1
-    - h5py=*=mpi_openmpi*
-    - mpi4py 3.0.3 py37hd955b32_1
-    - scipy 1.5.2 py37h0b6359f_0
-    - pandas 1.1.3 py37h3340039_0
-    - pywavelets 1.1.1 py37h03ebfcd_1
-    - scikit-image 0.17.2 py37h0da4684_1
-    - scikit-learn 0.23.1 py37h8a51577_0
-    - geodistk 0.1.6 py37hdeaff10_0
-    - morphsnakes 1.0 py37hdeaff10_0
-    - tomobar 2021.03 py37hdeaff10_0
-    - tomophantom 2021.01 np115py37_0
-    - larix 2021.03 py37hdeaff10_0
-    - ccpi-reconstruction 20.09 np115py37h3be76a2_0
-    - ccpi-regulariser 2021.03 np115py37_0
-    - astra-toolbox 1.9.9.dev4 py37hb48bd9c_0
-    - pyfai 0.19.0 py37hb3f55d8_0
-    - pymca 5.5.5 py37h03ebfcd_1
-    - pyfftw 0.12.0 py37hc3ef4f8_1
-    - xraylib 4.0.0 py37h539c4ae_2
-    - peakutils 1.3.3 py_0
-    - mrcfile 1.2.0 pyhd3deb0d_0
-    - tifffile 2020.6.3 py_0
-    - fabio 0.10.2 py37h03ebfcd_0
-    - colorama 0.4.4 pyh9f0ad1d_0
-    - jinja2 2.11.2 pyh9f0ad1d_0
-    - pytest 6.2.1 py37h89c1867_0
-    - pytest-xdist 2.2.1 pyhd3eb1b0_0
-    - setuptools 49.6.0 py37he5f6b98_2
-    - mock 4.0.3 py37h89c1867_0
-    - spyder 4.2.0 py37h89c1867_0
-    - pip 20.3.3 pyhd8ed1ab_0
-    - pmacparser 4.0 py37hdeaff10_0
-    - linecache2
-    - traceback2
-    - pynvml
-    - yamllint
-
-test:
-  imports:
-    - colorama
-    - h5py
-    - mpi4py
-    - numpy
-    - scipy
-    - pyfftw
-    - linecache2
-    - traceback2
-    - savu
-    - yaml
-
-  commands:
-    - savu --version
-    - savu_config -h
-    - savu_quick_tests
-
-about:
-  home: https://github.com/DiamondLightSource/Savu
-  license: Apache V2 and GPL V3
-  license_family: GPL3
-  doc_url: https://savu-lite.readthedocs.io/en/latest/
-  dev_url: https://github.com/DiamondLightSource/Savu/
-  summary: "Savu-lite - Minimal version of Savu tomography and processing pipeline suitable for processing data on a PC"
-
-extra:
-  recipe-maintainers:
-    - DaniilKazantsev
diff --git a/install/savu_lite39/condabuild/meta.yaml b/install/savu_lite39/condabuild/meta.yaml
new file mode 100644
index 000000000..461545c1e
--- /dev/null
+++ b/install/savu_lite39/condabuild/meta.yaml
@@ -0,0 +1,99 @@
+{% set repo = "py39" %}
+
+package:
+  name: savu-lite
+  version: {{ environ['VERSION'] }}
+
+source:
+  url: https://github.com/DiamondLightSource/Savu/archive/{{ repo }}.tar.gz
+
+build:
+  preserve_egg_dir: True
+  number: 0
+  script: python setup.py install
+
+requirements:
+  host:
+    - python
+    - pip
+    - wheel
+
+  run:
+    - python
+    - ipython
+    - cudatoolkit >=10.1
+    - numpy
+    - tomopy
+    - astra-toolbox
+    - ccpi-regulariser
+    - ccpi-reconstruction
+    - morphsnakes
+    - geodistk
+    - pmacparser
+    - tomophantom
+    - tomobar
+    - larix
+    - hdf5
+    - openmpi
+    - h5py >3.0
+    - mpi4py
+    - scipy
+    - pandas
+    - pywavelets
+    - pypwt
+    - pystackreg
+    - pytorch
+    - fastai
+    - scikit-image
+    - scikit-learn
+    - colorama
+    - jinja2
+    - pytest
+    - pytest-xdist
+    - mock
+    - spyder
+    - setuptools
+    - pip
+    - pynvml
+    - yamllint
+    - linecache2
+    - traceback2
+    - pyfftw
+    - xraylib
+    - peakutils
+    - tifffile
+    - pyfai
+    - pymca
+    - mrcfile
+    - fabio
+
+test:
+  imports:
+    - astra
+    - colorama
+    - h5py
+    - mpi4py
+    - numpy
+    - scipy
+    - pyfftw
+    - linecache2
+    - traceback2
+    - savu
+    - yaml
+
+  commands:
+    - savu --version
+    - savu_config -h
+    - savu_quick_tests
+
+about:
+  home: https://github.com/DiamondLightSource/Savu
+  license: Apache V2 and GPL V3
+  license_family: GPL3
+  doc_url: https://savu-lite.readthedocs.io/en/latest/
+  dev_url: https://github.com/DiamondLightSource/Savu/
+  summary: "Savu-lite - Minimal version of Savu tomography and processing pipeline suitable for processing data on a PC"
+
+extra:
+  recipe-maintainers:
+    - DaniilKazantsev
diff --git a/install/savu_lite39/condabuild/savulite_installer.sh b/install/savu_lite39/condabuild/savulite_installer.sh
new file mode 100755
index 000000000..fe093e648
--- /dev/null
+++ b/install/savu_lite39/condabuild/savulite_installer.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+export VERSION=4.0_$(date +%Y.%m)
+conda install --yes conda-build anaconda-client setuptools conda-verify
+#conda build . -c https://conda.anaconda.org/conda-forge/ -c https://conda.anaconda.org/astra-toolbox/label/dev/ -c https://conda.anaconda.org/savu-dep/ -c https://conda.anaconda.org/ccpi/ --numpy 1.15 --python 3.7 --override-channels
+conda build . -c defaults -c conda-forge -c savu-dep -c ccpi -c fastai --override-channels
+#conda build . --numpy 1.15 --python 3.7 -c astra-toolbox/label/dev/
diff --git a/savu/data/data_structures/plugin_data.py b/savu/data/data_structures/plugin_data.py
index 5e711c6f1..ac25f5a22 100644
--- a/savu/data/data_structures/plugin_data.py
+++ b/savu/data/data_structures/plugin_data.py
@@ -27,7 +27,6 @@
 import h5py
 import logging
 import numpy as np
-from fractions import gcd
 
 from savu.data.meta_data import MetaData
 from savu.data.data_structures.data_add_ons import Padding
@@ -345,7 +344,7 @@ def _get_max_frames_process(self):
             frame_chunk = self.meta_data.get("max_frames_process")
             chunk = self.data_obj.get_preview().get_starts_stops_steps(
                 key='chunks')[self.get_slice_directions()[0]]
-            self.meta_data.set('max_frames_process', gcd(frame_chunk, chunk))
+            self.meta_data.set('max_frames_process', math.gcd(frame_chunk, chunk))
         return self.meta_data.get("max_frames_process")
 
     def _get_max_frames_transfer(self):
@@ -358,17 +357,17 @@ def _set_no_squeeze(self):
 
     def _get_no_squeeze(self):
         return self.no_squeeze
-    
+
     def _set_rank_inc(self, n):
         """ Increase the rank of the array passed to the plugin by n.
-        
+
         :param int n: Rank increment.
         """
         self._increase_rank = n
-    
+
     def _get_rank_inc(self):
         """ Return the increased rank value
-        
+
         :returns: Rank increment
         :rtype: int
         """