The document discusses the artifact evaluation experience at the CGO and PPoPP 2015 conferences. It provides an overview of the joint artifact evaluation process used, which involved authors submitting related materials that were evaluated over 2 weeks by committees. The highest ranked artifacts from each conference won prizes. Challenges discussed include differing software/hardware environments and accessing proprietary tools/benchmarks. Suggestions are made to improve reproducibility, such as providing common infrastructure and expanding hardware/software resources.