Use a simple 8-bit activity sketch on each node, and use it to generate weighted split points. Use a "probation counter" to avoid merging nearly-empty fresh nodes back into their just-split sibling
Use a simple 8-bit activity sketch on each node, and use it to generate weighted split points. Use a "probation counter" to avoid merging nearly-empty fresh nodes back into their just-split sibling

spacejam/sled,spacejam/sled,spacejam/sled