So I managed to get this dreaded error: Message ID: ZFS-8000-8A. It happened when I tried moving a directory between file systems on different zpools. Not gonna tempt fate and try that again. In future I will copy from source to target and then delete the target.
I found myself reminiscing about my implementation of Blowfish today. It earned me the great honour of being listed on Bruce Schneier’s web page. My implementation made Blowfish compatible across 32-bit signed ints, 64-bit signed ints, and 64-bit floats. I wrote this code coming up on 12 years ago… how time flies.
I learned a few things about RAM today. Things began with the realisation that a CPU can read 32GB of RAM (e.g. all of it) in about 10 seconds. That surprised me at first, and then I thought about it (for the first time ever, not usually a big fan of thinking, can lead to discomfort).
Then I learned that DDR4 has a 64-bit data bus whereas DDR5 has a 128-bit data bus.
And then I learned that today’s SDRAM used to be asynchronous DRAM.
Some notes about the JSON spec:
Some interesting discussion about content moderation and user safety: Bluesky’s user safety situation.
This a note for Future John: Using filesystem capabilities with rsync by Hazel Smith. Use the CAP_DAC_READ_SEARCH capability. AKA: how I learned to stop worrying and love CAP_DAC_READ_SEARCH. There are some more notes over on Linux Capabilities and rsync, from presentation to practice.
Here’s some good info for configuring ODBC for MariaDB on Ubuntu for use from LibreOffice Base: LibreOffice Base and MariaDB. The same article also has some info about how to use ENGINE=CONNECT for importing JSON from web services.
A high-level pictorial view of the data & AI landscape as of 2020: Resilience and Vibrancy: The 2020 Data & AI Landscape.
Like Maslow’s hierarchy, but for AI and data: The AI Hierarchy of Needs.
Today I found myself reading William Kahan’s homepage after having waded through An Interview with the Old Man of Floating-Point.