Groups   186 of 99+      julia-users › mkpath   race condition on cluster? 1 post by 1 author      David van Leeuwen    Jun 24   Hello,   I am experiencing strange errors related to code that tries to ensure a directory is there:  dir   dirname dest  if isfile dir       warn  Directory is file:  , dir       continue  else      mkpath dir   end        However, while running this script parallel on a cluster, I regularly get the error:  ERROR: LoadError: SystemError: mkdir: File exists   in mkdir at file-jl:42   in mkpath at file-jl:50    inlined code  from  home ...    Maybe it is NFS that is caching too aggressively, or lying about the existence of concurrently created directories.  I don't know.     Would there be a way to make `mkpath  ` behave more atomically?  At the moment I have to replace the `mkpath  ` above with `ensuredir  ` below:    function ensuredir d::AbstractString       if !isdir d           try              mkpath d           catch e              isdir d  || throw e           end      end               end   Thanks,   ---david  P.S.  If this is a re-post, I didn't loose the original in the end in google somewhat buggy groups interface...