Logging a warning when more than 90% of the memory is used
Changed the limit to 80% of the physical memory
Better variable names
Merge pull request #1411 from gem/memory-warning

Log a warning when more than 80% of the memory is used
Errors in a task are convented to RuntimeError
Improved the test_task decorator
The IML must be extrapolated to zero for large poes
Improved a comment
Merge pull request #1413 from gem/extrapolate-min-iml

The IML must be extrapolated to zero for large poes
Merge pull request #1410 from gem/remove-CalculationUnit

Remove calculation unit
Merge pull request #1412 from gem/task-runtime-error

Errors in a task are converted into a RuntimeError
Refactored the RiskModel API
Now VulnerabilityFunction instances have a required attribute .imt
Minor cleanup
Merge branch 'master' of github.com:gem/oq-engine into getter-builder
Fixed an ugly bug in the tests with job.is_running=False