![]() ![]() My first idea was having up to 10 raspberry pis (V.2 model B) running at all times. So the main concern for my project is to make it energy efficient. I have a 3-year old gaming rig that still packs a punch but running it 24/7 long time is prohibitive for me due to electricity cost. I am thinking about SETI, Rosetta and CPU Projects mainly. To start off I have been thinking about building a dedicated machine for BIONC for a long time now. I found an old thread on the topic but thought it would be worth discussing this again and with a few special ideas I've had. Instead it's generally recommended that you use sudo (or similar) on a case-by-case basis when you know that you want it.This is my first post here as I am not yet participating in any BIONC project and I hope this is the right place to ask. There is no architectural reasons why, it's just the opinion of many devs that you should not do it for security (ie limit the ability of malware to infect anything beyond the current user's files) and stability (ie through accidental deletion/modification of important files) reasons. Many *nix environments discourage you from logging in as root directly and running a graphical environment as root, whilst Windows lets you log in as an 'admin' user just fine. ![]() eg: sudo leafpad /boot/setup.txt Unix permissions are all very alien if you're not used to them. Nano itself was not what fixed your problem: the key was that you used the 'sudo' command. You were logged in as an ordinary user and leafpad (your text editor) was also running under your username, so it was not permitted to change this file. Only the root user is allowed to edit or save over this file. Quote from: Whales on April 22, 2016, 01:18:10 pm Issues saving/writing to /boot/setup /boot/config.txt is a file owned by the 'root' (admin) user. I no longer know my old account info, so I'd have to start over on the stats. But I do have a RasPi sitting around running but doing mostly nothing. I don't think I ran it at home much after that. By Monday they had processed more units than I had done on my obsolete home PC in the previous year. So I signed up all 30 computers - all with faster processors and memory than the general public even knew about yet - on crunching SETI units on my personal account. Usually we had specially designed test routines we ran, but we finished setting them up on a Friday, and we didn't have time to put the real test software on all of them and get the official testing going. For a couple years I worked at a computer manufacturer and one time we set up about 30 new systems in the test lab. I sort of got discouraged when computers were getting faster and faster and making all my past progress look like nothing. I never got around to changing to BOINC, so when they discontinued the old system I just didn't do it anymore. Eventually they started BOINC up but let everyone on the old system remain for a while. They had a custom piece of software you installed that did nothing but crunch There was the background task, and if you wanted there was a screen saver that would show the graphical view of the units being processed. ![]() A minor correction - when first started they didn't use the BOINC system. ![]()
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