Fix for production
Description of bug
Too high memory in the jobs of ATLMCPROD-9171
Changes introduced
Revert !1158 (merged) (bring nEventsPerJob
back 10k) and add gridpacks for each jO
Tests
Tested on lxplus
Issues resolved
Closes #
Too high memory in the jobs of ATLMCPROD-9171
Revert !1158 (merged) (bring nEventsPerJob
back 10k) and add gridpacks for each jO
Tested on lxplus
Closes #