#memmap

Retry‑safe writes with np.memmap: unresolved durability guarantees

When persisting large arrays to disk using np.memmap or np.lib.format.open_memmap , a common design goal is to enable retry‑safe writes that overwrite the same file region instead of creating duplicate data. The current documented workflow is to open the file in 'r+' or 'w+' mode, modify the array in place, and invoke flush() to push pages to the OS page cac