Change all IPython parallel workers to a common directory under $HOME

cdSame.py

def cdSame(profile=None):
    import os
    from IPython.parallel import Client

    if profile:
        rc = Client(profile=profile)
    else:
        rc = Client()
    dview = rc[:]


    home = os.getenv('HOME')
    cwd = os.getcwd()

    def cdrel(relpath):
        import os
        home = os.getenv('HOME')
        fullpath = os.path.join(home, relpath)
        try:
            os.chdir(fullpath)
        except OSError:
            return False
        else:
            return True

    if cwd.find(home) == 0:
        relpath = cwd[len(home)+1:]
        return all(rc[:].apply_sync(cdrel, relpath))