Optimized rupture saving [skip CI]
Optimized rupture saving [skip CI]


Former-commit-id: cedd5e3ed0b219e786a3a470cfd87e304ec5fb82 [formerly e77b955b5ca0ed5e205acb4445fc851ceb31dc5b]
Former-commit-id: 8db6ccf99e09eaad77795c06fe76bdfc37119205
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine