Fan out RSpec across Buildkite matrix shards: one job per shard index, scheduled concurrently, each running a disjoint spec subset. Cuts CI wall time hard.

https://www.valtersit.com/vault/parallelize-test-shards-with-buildkite-matrix-and-rspec-bise-2b7a40/

#buildkite #parallelism #ValtersIT

PopPy is a system that automatically parallelizes external calls in Python agentic workflows by combining an ahead-of-time compiler with a runtime, tackling language complexity, dynamic dispatch, and variable mutation. It…

#Python #AIagents #Compilers #Parallelism
https://arxiv.org/abs/2605.18697