If no arguments are given, it will open a new bash instance within the mount namespace it creates, which is useful for interactive tasks. It acts as a wrapper and should be invoked as bwpy-environ - program. To do this, a small program, bwpy-environ, is needed to perform these operations. This change dramatically improves Python start-up times and allows for more frequent updates. The paths to bwpy python will begin with either /sw/bw/bwpy or /mnt/bwpy.Īfter which, the path to the Python binary should be different:Īnd the version reported by Python should be the latest version of the Python3 branch:Įntering the full bwpy environment with bwpy-environīWPY is now installed into ext3 images which must be mounted before use. Anaconda should not be used on Blue Waters for it will not work well and is entirely unsupported. The "bwpy" module must be loaded first to gain access to the "bwpy-mpi" module.īesides bwpy, there are several other installations of Python, and so users should take care and ensure that they are using the correct Python software environment. This way, packages like mpi4py can be optionally imported and not break on login nodes. The module "bwpy-mpi" adds an additional Python sites directory at higher priority to override packages with optional MPI functionality and to provide MPI-only modules such as mpi4py. The base module, "bwpy" provides the python interpreters plus most packages. The components of the bwpy suite are installed into two main modules, "bwpy" and "bwpy-mpi". The core numerical libraries are linked against Cray's libsci, and the stack is built for running on both login and compute nodes. Over 300 Python packages are avalable, including mpi4py, pycuda, h5py, netcdf4-python, and pandas. The bwpy suite implements the scipy stack specification plus many other scientific Python packages. The Blue Waters Python software stack (bwpy) is an expansive suite of Python software components supporting a large class of high performance and scientific computing applications.
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