This report synthesises findings from 2 peer-reviewed papers addressing the following research question: How does the inference efficiency of LightGCL compare to SGL and GCA when scaling to large-scale recommendation datasets like Amazon-1M and MovieLens-20M in terms of runtime and memory usage. In recent years, deep learning on graphs has achieved remarkable success in various domains. However, the reliance on annotated graph data remains a significant bottleneck due to its prohibitive cost and time-intensive nature. 7 claims were extracted from source literature; 7 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 8.2/10. This report is a machine-generated literature synthesis and does not constitute original research.Research goal: How does the inference efficiency of LightGCL compare to SGL and GCA when scaling to large-scale recommendation datasets like Amazon-1M and MovieLens-20M in terms of runtime and memory usage?Autonomous literature synthesis. Automated review score: 8.2/10. Full text and citation available at Assignee Research.