dougallj 
Rosetta 2 is remarkably fast when compared to other x86-on-ARM emulators. I’ve spent a little time looking at how it works, out of idle curiosity, and found it to be quite unusual, so I figured I’d put together my notes. … Read more
Variable length non-self-synchronising prefix codes (like x86 instructions and Huffman codes) are hard to decode in parallel, as each word must be decoded to figure out its length, before the next can be found and decoded. I came up with … Read more
CRC32 is a checksum first proposed in 1961, and now used in a wide variety of performance sensitive contexts, from file formats (zip, png, gzip) to filesystems (ext4, btrfs) and protocols (like ethernet and SATA). So, naturally, a lot of … Read more