Sul LuaTeX Reference Manual, nel paragrafo 10.2 si legge (il neretto l’ho aggiunto io):
LuaTeX_Reference_ManualThe single internal memory heap that traditional TEX used for tokens and nodes is split into two separate arrays. Each of these will grow dynamically when needed.
The texmf.cnf settings related to main memory are no longer used (these are: main_memory, mem_bot, extra_mem_top and extra_mem_bot). ‘Out of main memory’ errors can still occur, but the limiting factor is now the amount of RAM in your system, not a predefined limit.
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The input line buffer and pool size are now also reallocated when needed, and the texmf.cnf settings buf_size and pool_size are silently ignored.
Quindi l’allocazione dinamica riserva la quantità di memoria necessaria non oltre la capacità della RAM del sistema.
Ciao