process_schism_fim uses a lot of memory. I tested with the pacific domain and discovered that loading the shapefile into memory takes almost 3GB of RAM.
Fiona represents geometries as dictionaries of objects. When storing large geometries such as those in the pacific domain, it becomes very inefficient. Fortunately, we can store geometries as shapely objects, which only use a fraction of the memory.
Before/after memory usage of get_mask_geoms_by_group
atlgulf:
increment: 2849.89 MiB # old
increment: 604.03 MiB # new
pacific:
increment: 2882.93 MiB # old
increment: 515.28 MiB # new
hi:
increment: 0.00 MiB
increment: 0.00 MiB
prvi:
increment: 0.00 MiB
increment: 0.01 MiB
Other misc fixes are removing two ineffective gc calls and an unnecessary enumeration.
process_schism_fim uses a lot of memory. I tested with the pacific domain and discovered that loading the shapefile into memory takes almost 3GB of RAM.
Fiona represents geometries as dictionaries of objects. When storing large geometries such as those in the pacific domain, it becomes very inefficient. Fortunately, we can store geometries as shapely objects, which only use a fraction of the memory.
Before/after memory usage of
get_mask_geoms_by_groupOther misc fixes are removing two ineffective gc calls and an unnecessary enumeration.