What to put in a binary data file's header

Question

I have a simulation that reads large binary data files that we create (10s to 100s of GB). We use binary for speed reasons. These files are system dependent, converted from te

Answer 1

An identifier for the type of the file would be useful if you will have other structures written to binary files later on. Maybe this could be a short string so you can see by a look into the file (via hex editor) what it contains.