Fixed num_cores in classical [skip CI]
Fixed num_cores in classical [skip CI]


Former-commit-id: 21a48abb002f02a40ef7992b82b926fb1c05cd4f [formerly b5424f5a5901acd3ff0a4e6070bac80b47bce9bb]
Former-commit-id: f8408739dea91398f99f0ddb5f226943c4123ca9
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine