Comment 1 for bug 1132018

The fix requires changing both the gmf_scenario table and the distribution logic. The gmf_scenario table must have few rows, possibly with a long array for each row, to keep a good performance even for large site collections. Currently instead the gmvs are split in chunks (~30 chunks per location). The proposal is to distribute not according to the realizations, but in blocks of sites. For instance each task could compute all the realizations of a given GMF for a block of sites (say 1000 sites per task).