Locking files doesn't work well for NFS

[KellenSunderland]

Our team finds it convenient to use NFSv4.1 filesystems when training our models with ducttape. One issue that we've come across is that on startup ducttape will acquire file-locks on more than 256 files at the same time. This causes a crash on the filesystem we're using (Amazon EFS).

I understand why these locks are necessary, but I'm wondering if anyone has ideas for a work-around that could allow us to avoid holding these concurrent file locks?