The serialization of the GMF needs to be optional

[Vitor Silva]

The probabilistic event-based calculator is taking about 2 hours to run very simple calculations. It might be due to the fact that it serializes thousands of ground motion fields, in which one is stored per xml file. Even if this task is not delaying significantly the performance of the engine, users should have the option to turn off this serialization. The output folder gets flooded with files which messes up MacFusion or any ftp client.

[Mattia Barbon (mattia.barbon)]

Tested with the probabilistic_event_based_risk demo (produces ~14K GMFs with 35 points each)

With DB + XML serialization:

real 11m55.672s
user 4m31.949s
sys 0m6.372s

Without DB serialization:

real 10m58.356s
user 3m44.950s
sys 0m5.484s

No serialization (risk reads GMFs from KVS):

real 4m17.530s
user 0m10.329s
sys 0m0.348s

[Mattia Barbon (mattia.barbon)]

In the comment above, the second entry should read: "With DB serialization:"

[beatpanic (kpanic)]

https://github.com/gem/openquake/pull/504 modifies the behaviour by adding a GMF_OUTPUT config parameter

[Paul Henshaw (paul-sl-henshaw)]

https://github.com/gem/oq-engine/pull/504