Hi,

While there is no option to estimate the necessary memory, there are a couple of advanced printing options to monitor the memory used step-by-step throughout the calculation. Please, refer to the MEMOPRT and MEMOPRT2 keywords in the User's Manual.

Let me know if this helps,

Dear Silvia, thank you very much for your help. Using the EXTERNAL and the .gui file solved my problem

Dear Giacomo, it worked fine. Thank you very much!

No problem. Hope it helps.