If you plan to use EMAN2/SPARX on a Linux cluster or other MPI environment, you will need to download and install this additional package. This is based on Pydusa 1.15, but has been modified for SPARX & EMAN2.
Please see http://blake.bcm.edu/emanwiki/EMAN2/Parallel/PyDusa for installation instructions.
For EMAN2.2 and later, this download is not required. This support is installed via Anaconda