Much of my work is done on machines that are only on load to me, not permanently assigned. Thus, I need to be able to provision them quickly and with a minimum of fuss. One action I routinely need to do is to check code out of a git server, such as gitlab.com. We use ssh keys to authenticate to gitlab. I need a way to do this securely when working on a remote machine. Here’s what I have found
My Band, The Standard Deviants, had a rehearsal this weekend. As usual, I tried to record some of it. As so often happens, our best performance was our warm up tune. This time, we performed a tune called “The SMF Blues” by my good friend Paul Campagna.
Continue readingI have been getting in the pool for the past couple of months, with a goal of completing a triathalon this summer. Today I got some pointers on things I need to improve on in my freestyle technique.
Continue readingThe basic tool for neural networks is: vector times matrix equals vector. The first vector is your input pattern, the second is your output pattern. Stack these in a series and you have a deep neural network. The absolute simplest implementation I could find for this is in C++ using boost.
Here it is:
Continue readingFor my birthday last year, my family got me an accordion. Yes, I am one of those people that collect musical instruments, not for their monetary value but because I enjoy trying them out. I spent some time trying to wrap my mind and my hands around the one button chord set up on the side. I know there are masters out there that have developed a set of techniques, but for those of use from other instruments, the arraignment of notes and chords in a cycle of fifth is challenging.
It got me thinking about how else you could arrange them. This might also be somewhat inspired by guitar and bass setups, but here is what I came up with:
We have an internal system for allocating hardware to developers on a short term basis. While the software does have a web API, it is not enabled by default, nor in our deployment. Thus, we end up caching a local copy of the data about the machine. The machine names are a glom of architecture, and location. So I make a file with the name of the machine, and a symlink to the one I am currently using.
Continue readingLinux is only one of the Operating Systems that our chips need to support. While some features need a complete OS for testing, we want to make sure that features are as tested as possible before we try to debug them through Linux.
Continue readingSomething I did in a commit broke my code. I have a git bisect that shows me the last good commit and the first bad one.
Continue readingWith a socket created, and a message sent, the next step in our networking journey is to receive data.
Continue readingOnce we open a socket, we probably want to send and receive data across it.Here is the system call we need to make in order to send data as I wrote about in my last post:
c = sendto(sd, buf, sizeof(buf), 0,
(struct sockaddr *)&addr, sizeof(addr));