Made the Starmap sequential on single machines
Made the Starmap sequential on single machines


Former-commit-id: cac54f8d5ebbfcca1e87d079a01dc06598ce4180 [formerly 4786bcfbf9e951a697020e07750fe57727e7fc8b] [formerly 4786bcfbf9e951a697020e07750fe57727e7fc8b [formerly 79bd0570d182a604d6cefdeda942c49f0e5671fa]]
Former-commit-id: 31779985e11e0d0bfe0631b1a977c3da7a780b1c
Former-commit-id: a95f32314073a09fcf6aff5ae56dca10e73d6e35
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine