# [2020.11.15] Manual Server Restart

Yesterday I ran one million tasks for `mace4` in 150 parallel
processes. I thought that keeping all the input and output files was
a bad idea. During the first experiment, I used an SQLite database,
but now I decided to keep it simple. The first signal was `ls` saying
to me that it was unable to list so many files. I still don't know
why, but In the morning I wasn't able to `ssh` to the server. Neither
were the admins, so one of them went to restart the server manually.
You don't want to keep millions of relatively small files in one
directory:)