- scripts/cloud/tasks/p5.sh: P4 preset re-check, genotype (v5) with QC, validate_p5_large.py - scripts/validate_p5_large.py: identify samples via het pattern vs 1000G VCF; sex, parent-offspring, Mendel, contamination/control distributions - trial.sh: DISK_MBPS / DISK_IOPS - qc/contamination: bounded map batches (executor.map submits eagerly)