I recently had the good fortune to gain access to the most powerful (publicly known) computer in the UK – ARCHER. This Cray XC30 has 118,000 processing cores and is a workhorse for many large scientific projects requiring massive parallel … Continue reading →

Problem: a program has a socket open and you want to force it to close without killing the owning process. Solution: get the file descriptor of the socket, debug the process and manually call close on the file descriptor. On … Continue reading →

As previously posted by Infertux here, a frozen SSH session when moving between networks is a common annoyance for anyone who works on remote servers. Thankfully there’s a quick fix (and a whole set of interesting commands) of which I … Continue reading →