Source code for openquake.calculators.base

# -*- coding: utf-8 -*-
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2014-2019 GEM Foundation
# OpenQuake is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# OpenQuake is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with OpenQuake. If not, see <>.
import os
import sys
import abc
import csv
import pdb
import logging
import operator
import traceback
from datetime import datetime
from shapely import wkt
import numpy

from openquake.baselib import (
    general, hdf5, datastore, __version__ as engine_version)
from openquake.baselib.parallel import Starmap
from openquake.baselib.performance import perf_dt, Monitor
from openquake.hazardlib import InvalidFile, geo, valid
from openquake.hazardlib.calc.filters import RtreeFilter, SourceFilter
from openquake.hazardlib.source import rupture
from openquake.hazardlib.shakemap import get_sitecol_shakemap, to_gmfs
from openquake.risklib import riskinput
from openquake.commonlib import (
    readinput, logictree, source, calc, writers, util)
from openquake.calculators.ucerf_base import UcerfFilter
from openquake.calculators.export import export as exp
from openquake.calculators import getters

get_taxonomy = operator.attrgetter('taxonomy')
get_weight = operator.attrgetter('weight')
get_trt = operator.attrgetter('src_group_id')
get_imt = operator.attrgetter('imt')

calculators = general.CallableDict(operator.attrgetter('calculation_mode'))
U16 = numpy.uint16
U32 = numpy.uint32
U64 = numpy.uint64
F32 = numpy.float32
TWO16 = 2 ** 16
RUPTURES_PER_BLOCK = 100000  # used in classical_split_filter

[docs]class InvalidCalculationID(Exception): """ Raised when running a post-calculation on top of an incompatible pre-calculation """
[docs]def fix_ones(pmap): """ Physically, an extremely small intensity measure level can have an extremely large probability of exceedence, however that probability cannot be exactly 1 unless the level is exactly 0. Numerically, the PoE can be 1 and this give issues when calculating the damage (there is a log(0) in :class:`openquake.risklib.scientific.annual_frequency_of_exceedence`). Here we solve the issue by replacing the unphysical probabilities 1 with .9999999999999999 (the float64 closest to 1). """ for sid in pmap: array = pmap[sid].array array[array == 1.] = .9999999999999999 return pmap
[docs]def build_weights(realizations, imt_dt): """ :returns: an array with the realization weights of shape (R, M) """ arr = numpy.zeros((len(realizations), len(imt_dt.names))) for m, imt in enumerate(imt_dt.names): arr[:, m] = [rlz.weight[imt] for rlz in realizations] return arr
[docs]def set_array(longarray, shortarray): """ :param longarray: a numpy array of floats of length L >= l :param shortarray: a numpy array of floats of length l Fill `longarray` with the values of `shortarray`, starting from the left. If `shortarry` is shorter than `longarray`, then the remaining elements on the right are filled with `numpy.nan` values. """ longarray[:len(shortarray)] = shortarray longarray[len(shortarray):] = numpy.nan
MAXSITES = 1000 CORRELATION_MATRIX_TOO_LARGE = '''\ You have a correlation matrix which is too large: %%d sites > %d. To avoid that, set a proper `region_grid_spacing` so that your exposure takes less sites.''' % MAXSITES
[docs]class BaseCalculator(metaclass=abc.ABCMeta): """ Abstract base class for all calculators. :param oqparam: OqParam object :param monitor: monitor object :param calc_id: numeric calculation ID """ precalc = None accept_precalc = [] from_engine = False # set by engine.run_calc is_stochastic = False # True for scenario and event based calculators def __init__(self, oqparam, calc_id=None): self.datastore = datastore.DataStore(calc_id) self._monitor = Monitor( '' % self.__class__.__name__, measuremem=True) self.oqparam = oqparam if 'performance_data' not in self.datastore: self.datastore.create_dset('performance_data', perf_dt)
[docs] def monitor(self, operation='', **kw): """ :returns: a new Monitor instance """ mon = self._monitor(operation, hdf5=self.datastore.hdf5) self._monitor.calc_id = mon.calc_id = self.datastore.calc_id vars(mon).update(kw) return mon
[docs] def save_params(self, **kw): """ Update the current calculation parameters and save engine_version """ if ('hazard_calculation_id' in kw and kw['hazard_calculation_id'] is None): del kw['hazard_calculation_id'] vars(self.oqparam).update(**kw) self.datastore['oqparam'] = self.oqparam # save the updated oqparam attrs = self.datastore['/'].attrs attrs['engine_version'] = engine_version attrs['date'] =[:19] if 'checksum32' not in attrs: attrs['checksum32'] = readinput.get_checksum32(self.oqparam) self.datastore.flush()
[docs] def check_precalc(self, precalc_mode): """ Defensive programming against users providing an incorrect pre-calculation ID (with ``--hazard-calculation-id``). :param precalc_mode: calculation_mode of the previous calculation """ calc_mode = self.oqparam.calculation_mode ok_mode = self.accept_precalc if calc_mode != precalc_mode and precalc_mode not in ok_mode: raise InvalidCalculationID( 'In order to run a calculation of kind %r, ' 'you need to provide a calculation of kind %r, ' 'but you provided a %r instead' % (calc_mode, ok_mode, precalc_mode))
[docs] def run(self, pre_execute=True, concurrent_tasks=None, close=True, **kw): """ Run the calculation and return the exported outputs. """ with self._monitor: self._monitor.username = kw.get('username', '') self._monitor.hdf5 = self.datastore.hdf5 if concurrent_tasks is None: # use the job.ini parameter ct = self.oqparam.concurrent_tasks else: # used the parameter passed in the command-line ct = concurrent_tasks if ct == 0: # disable distribution temporarily oq_distribute = os.environ.get('OQ_DISTRIBUTE') os.environ['OQ_DISTRIBUTE'] = 'no' if ct != self.oqparam.concurrent_tasks: # save the used concurrent_tasks self.oqparam.concurrent_tasks = ct self.save_params(**kw) try: if pre_execute: self.pre_execute() self.result = self.execute() if self.result is not None: self.post_execute(self.result) self.before_export() self.export(kw.get('exports', '')) except Exception: if kw.get('pdb'): # post-mortem debug tb = sys.exc_info()[2] traceback.print_tb(tb) pdb.post_mortem(tb) else: logging.critical('', exc_info=True) raise finally: # cleanup globals if ct == 0: # restore OQ_DISTRIBUTE if oq_distribute is None: # was not set del os.environ['OQ_DISTRIBUTE'] else: os.environ['OQ_DISTRIBUTE'] = oq_distribute readinput.pmap = None readinput.exposure = None readinput.gmfs = None readinput.eids = None self._monitor.flush() if close: # in the engine we close later self.result = None try: self.datastore.close() except (RuntimeError, ValueError): # sometimes produces errors but they are difficult to # reproduce logging.warning('', exc_info=True) return getattr(self, 'exported', {})
[docs] def core_task(*args): """ Core routine running on the workers. """ raise NotImplementedError
[docs] @abc.abstractmethod def pre_execute(self): """ Initialization phase. """
[docs] @abc.abstractmethod def execute(self): """ Execution phase. Usually will run in parallel the core function and return a dictionary with the results. """
[docs] @abc.abstractmethod def post_execute(self, result): """ Post-processing phase of the aggregated output. It must be overridden with the export code. It will return a dictionary of output files. """
[docs] def export(self, exports=None): """ Export all the outputs in the datastore in the given export formats. Individual outputs are not exported if there are multiple realizations. """ self.exported = getattr(self.precalc, 'exported', {}) if isinstance(exports, tuple): fmts = exports elif exports: # is a string fmts = exports.split(',') elif isinstance(self.oqparam.exports, tuple): fmts = self.oqparam.exports else: # is a string fmts = self.oqparam.exports.split(',') keys = set(self.datastore) has_hcurves = ('hcurves-stats' in self.datastore or 'hcurves-rlzs' in self.datastore) if has_hcurves: keys.add('hcurves') for fmt in fmts: if not fmt: continue for key in sorted(keys): # top level keys if 'rlzs' in key and self.R > 1: continue # skip individual curves self._export((key, fmt)) if has_hcurves and self.oqparam.hazard_maps: self._export(('hmaps', fmt)) if has_hcurves and self.oqparam.uniform_hazard_spectra: self._export(('uhs', fmt))
def _export(self, ekey): if ekey not in exp or self.exported.get(ekey): # already exported return with self.monitor('export'): try: self.exported[ekey] = fnames = exp(ekey, self.datastore) except Exception as exc: fnames = [] logging.error('Could not export %s: %s', ekey, exc) if fnames:'exported %s: %s', ekey[0], fnames)
[docs] def before_export(self): """ Set the attributes nbytes """ # sanity check that eff_ruptures have been set, i.e. are not -1 try: csm_info = self.datastore['csm_info'] except KeyError: csm_info = self.datastore['csm_info'] = for sm in csm_info.source_models: for sg in sm.src_groups: assert sg.eff_ruptures != -1, sg for key in self.datastore: self.datastore.set_nbytes(key) self.datastore.flush()
[docs]def check_time_event(oqparam, occupancy_periods): """ Check the `time_event` parameter in the datastore, by comparing with the periods found in the exposure. """ time_event = oqparam.time_event if time_event and time_event not in occupancy_periods: raise ValueError( 'time_event is %s in %s, but the exposure contains %s' % (time_event, oqparam.inputs['job_ini'], ', '.join(occupancy_periods)))
[docs]class HazardCalculator(BaseCalculator): """ Base class for hazard calculators based on source models """
[docs] def block_splitter(self, sources, weight=get_weight, key=lambda src: 1): """ :param sources: a list of sources :param weight: a weight function (default .weight) :param key: None or 'src_group_id' :returns: an iterator over blocks of sources """ ct = self.oqparam.concurrent_tasks or 1 maxweight = self.csm.get_maxweight(weight, ct, source.MINWEIGHT) if not hasattr(self, 'logged'): if maxweight == source.MINWEIGHT:'Using minweight=%d', source.MINWEIGHT) else:'Using maxweight=%d', maxweight) self.logged = True return general.block_splitter(sources, maxweight, weight, key)
@general.cached_property def src_filter(self): """ :returns: a SourceFilter/UcerfFilter """ oq = self.oqparam self.hdf5cache = self.datastore.hdf5cache() sitecol = self.sitecol.complete if self.sitecol else None if 'ucerf' in oq.calculation_mode: return UcerfFilter(sitecol, oq.maximum_distance, self.hdf5cache) return SourceFilter(sitecol, oq.maximum_distance, self.hdf5cache) @general.cached_property def rtree_filter(self): """ :returns: an RtreeFilter """ return RtreeFilter(self.src_filter.sitecol, self.oqparam.maximum_distance, self.src_filter.filename) @property def E(self): """ :returns: the number of stored events """ try: return len(self.datastore['events']) except KeyError: return 0 @property def N(self): """ :returns: the total number of sites """ if hasattr(self, 'sitecol'): return len(self.sitecol.complete) if self.sitecol else None return len(self.datastore['sitecol/array'])
[docs] def check_overflow(self): """Overridden in event based"""
[docs] def check_floating_spinning(self): op = '=' if self.oqparam.pointsource_distance == {} else '<' f, s = self.csm.get_floating_spinning_factors() if f != 1:'Rupture floating factor %s %s', op, f) if s != 1:'Rupture spinning factor %s %s', op, s)
[docs] def read_inputs(self): """ Read risk data and sources if any """ oq = self.oqparam self._read_risk_data() self.check_overflow() # check if self.sitecol is too large if ('source_model_logic_tree' in oq.inputs and oq.hazard_calculation_id is None): self.csm = readinput.get_composite_source_model( oq, self.monitor(), srcfilter=self.src_filter) self.init() # do this at the end of pre-execute
[docs] def save_multi_peril(self): """ Read the hazard fields as csv files, associate them to the sites and create the `hazard` dataset. """ oq = self.oqparam fnames = oq.inputs['multi_peril'] dt = [(haz, float) for haz in oq.multi_peril] N = len(self.sitecol) self.datastore['multi_peril'] = z = numpy.zeros(N, dt) for name, fname in zip(oq.multi_peril, fnames): data = [] with open(fname) as f: for row in csv.DictReader(f): intensity = valid.positivefloat(row['intensity']) if intensity > 0: data.append((float(row['lon']), float(row['lat']), intensity)) data = numpy.array(data, [('lon', float), ('lat', float), ('number', float)])'Read %s with %d rows' % (fname, len(data))) if len(data) != len(numpy.unique(data[['lon', 'lat']])): raise InvalidFile('There are duplicated points in %s' % fname) try: asset_hazard_distance = oq.asset_hazard_distance[name] except KeyError: asset_hazard_distance = oq.asset_hazard_distance['default'] sites, filtdata, _discarded = geo.utils.assoc( data, self.sitecol, asset_hazard_distance, 'filter') z = numpy.zeros(N, float) z[sites.sids] = filtdata['number'] self.datastore['multi_peril'][name] = z self.datastore.set_attrs('multi_peril', nbytes=z.nbytes)
# convert ASH into a GMF # if 'ASH' in oq.multi_peril: # in the future, if the stddevs will become available, we will # be able to generate a distribution of GMFs, as we do for the # ShakeMaps; for the moment, we will consider a single event # oq.number_of_ground_motion_fields = E = 1 # events = numpy.zeros(E, rupture.events_dt) # gmf = self.datastore['multi_peril']['ASH'].reshape(N, E, 1) # save_gmf_data(self.datastore, self.sitecol, gmf, ['ASH'], events)
[docs] def pre_execute(self): """ Check if there is a previous calculation ID. If yes, read the inputs by retrieving the previous calculation; if not, read the inputs directly. """ oq = self.oqparam if 'gmfs' in oq.inputs or 'multi_peril' in oq.inputs: # read hazard from files assert not oq.hazard_calculation_id, ( 'You cannot use --hc together with gmfs_file') self.read_inputs() if 'gmfs' in oq.inputs: save_gmfs(self) else: self.save_multi_peril() elif 'hazard_curves' in oq.inputs: # read hazard from file assert not oq.hazard_calculation_id, ( 'You cannot use --hc together with hazard_curves') haz_sitecol = readinput.get_site_collection(oq) # NB: horrible: get_site_collection calls get_pmap_from_nrml # that sets oq.investigation_time, so it must be called first self.load_riskmodel() # must be after get_site_collection self.read_exposure(haz_sitecol) # define .assets_by_site self.datastore['poes/grp-00'] = fix_ones(readinput.pmap) self.datastore['sitecol'] = self.sitecol self.datastore['assetcol'] = self.assetcol self.datastore['csm_info'] = fake = source.CompositionInfo.fake() self.rlzs_assoc = fake.get_rlzs_assoc() elif oq.hazard_calculation_id: parent = self.check_precalc(parent['oqparam'].calculation_mode) self.datastore.parent = parent # copy missing parameters from the parent params = {name: value for name, value in vars(parent['oqparam']).items() if name not in vars(self.oqparam)} self.save_params(**params) self.read_inputs() oqp = parent['oqparam'] if oqp.investigation_time != oq.investigation_time: raise ValueError( 'The parent calculation was using investigation_time=%s' ' != %s' % (oqp.investigation_time, oq.investigation_time)) if oqp.minimum_intensity != oq.minimum_intensity: raise ValueError( 'The parent calculation was using minimum_intensity=%s' ' != %s' % (oqp.minimum_intensity, oq.minimum_intensity)) missing_imts = set(oq.risk_imtls) - set(oqp.imtls) if missing_imts: raise ValueError( 'The parent calculation is missing the IMT(s) %s' % ', '.join(missing_imts)) elif self.__class__.precalc: calc = calculators[self.__class__.precalc]( self.oqparam, self.datastore.calc_id) self.param = calc.param self.sitecol = calc.sitecol self.assetcol = calc.assetcol self.riskmodel = calc.riskmodel if hasattr(calc, 'rlzs_assoc'): self.rlzs_assoc = calc.rlzs_assoc else: # this happens for instance for a scenario_damage without # rupture, gmfs, multi_peril raise InvalidFile( '%(job_ini)s: missing gmfs_csv, multi_peril_csv' % oq.inputs) if hasattr(calc, 'csm'): # no scenario self.csm = calc.csm else: self.read_inputs() if self.riskmodel: self.save_riskmodel()
[docs] def init(self): """ To be overridden to initialize the datasets needed by the calculation """ oq = self.oqparam if not oq.risk_imtls: if self.datastore.parent: oq.risk_imtls = ( self.datastore.parent['oqparam'].risk_imtls) if 'precalc' in vars(self): self.rlzs_assoc = self.precalc.rlzs_assoc elif 'csm_info' in self.datastore: csm_info = self.datastore['csm_info'] if oq.hazard_calculation_id and 'gsim_logic_tree' in oq.inputs: # redefine the realizations by reading the weights from the # gsim_logic_tree_file that could be different from the parent csm_info.gsim_lt = logictree.GsimLogicTree( oq.inputs['gsim_logic_tree'], set(csm_info.trts)) self.rlzs_assoc = csm_info.get_rlzs_assoc() elif hasattr(self, 'csm'): self.check_floating_spinning() self.rlzs_assoc = else: # build a fake; used by risk-from-file calculators self.datastore['csm_info'] = fake = source.CompositionInfo.fake() self.rlzs_assoc = fake.get_rlzs_assoc()
@general.cached_property def R(self): """ :returns: the number of realizations """ try: return except AttributeError: # no self.csm return self.datastore['csm_info'].get_num_rlzs()
[docs] def read_exposure(self, haz_sitecol=None): # after load_risk_model """ Read the exposure, the riskmodel and update the attributes .sitecol, .assetcol """ with self.monitor('reading exposure', autoflush=True): self.sitecol, self.assetcol, discarded = ( readinput.get_sitecol_assetcol( self.oqparam, haz_sitecol, self.riskmodel.loss_types)) if len(discarded): self.datastore['discarded'] = discarded if hasattr(self, 'rup'): # this is normal for the case of scenario from rupture'%d assets were discarded because too far ' 'from the rupture; use `oq show discarded` ' 'to show them and `oq plot_assets` to plot ' 'them' % len(discarded)) elif not self.oqparam.discard_assets: # raise an error self.datastore['sitecol'] = self.sitecol self.datastore['assetcol'] = self.assetcol raise RuntimeError( '%d assets were discarded; use `oq show discarded` to' ' show them and `oq plot_assets` to plot them' % len(discarded)) # reduce the riskmodel to the relevant taxonomies taxonomies = set(taxo for taxo in self.assetcol.tagcol.taxonomy if taxo != '?') if len(self.riskmodel.taxonomies) > len(taxonomies):'Reducing risk model from %d to %d taxonomies', len(self.riskmodel.taxonomies), len(taxonomies)) self.riskmodel = self.riskmodel.reduce(taxonomies) return readinput.exposure
[docs] def load_riskmodel(self): # to be called before read_exposure # NB: this is called even if there is no risk model """ Read the risk model and set the attribute .riskmodel. The riskmodel can be empty for hazard calculations. Save the loss ratios (if any) in the datastore. """'Reading the risk model if present') self.riskmodel = readinput.get_risk_model(self.oqparam) if not self.riskmodel: parent = self.datastore.parent if 'risk_model' in parent: self.riskmodel = riskinput.read_composite_risk_model(parent) return if self.oqparam.ground_motion_fields and not self.oqparam.imtls: raise InvalidFile('No intensity_measure_types specified in %s' % self.oqparam.inputs['job_ini']) self.save_params() # re-save oqparam
[docs] def save_riskmodel(self): """ Save the risk models in the datastore """ self.datastore['risk_model'] = rm = self.riskmodel self.datastore['taxonomy_mapping'] = self.riskmodel.tmap attrs = self.datastore.getitem('risk_model').attrs attrs['min_iml'] = hdf5.array_of_vstr(sorted(rm.min_iml.items())) self.datastore.set_nbytes('risk_model')
def _read_risk_data(self): # read the exposure (if any), the risk model (if any) and then the # site collection, possibly extracted from the exposure. oq = self.oqparam self.load_riskmodel() # must be called first if oq.hazard_calculation_id: with as dstore: haz_sitecol = dstore['sitecol'].complete else: haz_sitecol = readinput.get_site_collection(oq) if hasattr(self, 'rup'): # for scenario we reduce the site collection to the sites # within the maximum distance from the rupture haz_sitecol, _dctx = self.cmaker.filter( haz_sitecol, self.rup) haz_sitecol.make_complete() if 'site_model' in oq.inputs: self.datastore['site_model'] = readinput.get_site_model(oq) oq_hazard = (self.datastore.parent['oqparam'] if self.datastore.parent else None) if 'exposure' in oq.inputs: exposure = self.read_exposure(haz_sitecol) self.datastore['assetcol'] = self.assetcol self.datastore['assetcol/num_taxonomies'] = ( self.assetcol.num_taxonomies_by_site()) if hasattr(readinput.exposure, 'exposures'): self.datastore['assetcol/exposures'] = ( numpy.array(exposure.exposures, hdf5.vstr)) elif 'assetcol' in self.datastore.parent: assetcol = self.datastore.parent['assetcol'] if oq.region: region = wkt.loads(oq.region) self.sitecol = haz_sitecol.within(region) if oq.shakemap_id or 'shakemap' in oq.inputs: self.sitecol, self.assetcol = self.read_shakemap( haz_sitecol, assetcol) self.datastore['assetcol'] = self.assetcol'Extracted %d/%d assets', len(self.assetcol), len(assetcol)) nsites = len(self.sitecol) if (oq.spatial_correlation != 'no' and nsites > MAXSITES): # hard-coded, heuristic raise ValueError(CORRELATION_MATRIX_TOO_LARGE % nsites) elif hasattr(self, 'sitecol') and general.not_equal( self.sitecol.sids, haz_sitecol.sids): self.assetcol = assetcol.reduce(self.sitecol) self.datastore['assetcol'] = self.assetcol self.datastore['assetcol/num_taxonomies'] = ( self.assetcol.num_taxonomies_by_site())'Extracted %d/%d assets', len(self.assetcol), len(assetcol)) else: self.assetcol = assetcol else: # no exposure self.sitecol = haz_sitecol if self.sitecol:'Read %d hazard sites', len(self.sitecol)) if oq_hazard: parent = self.datastore.parent if 'assetcol' in parent: check_time_event(oq, parent['assetcol'].occupancy_periods) elif oq.job_type == 'risk' and 'exposure' not in oq.inputs: raise ValueError('Missing exposure both in hazard and risk!') if oq_hazard.time_event and oq_hazard.time_event != oq.time_event: raise ValueError( 'The risk configuration file has time_event=%s but the ' 'hazard was computed with time_event=%s' % ( oq.time_event, oq_hazard.time_event)) if oq.job_type == 'risk': taxonomies = set(taxo for taxo in self.assetcol.tagcol.taxonomy if taxo != '?') # check that we are covering all the taxonomies in the exposure missing = taxonomies - set(self.riskmodel.taxonomies) if self.riskmodel and missing: raise RuntimeError('The exposure contains the taxonomies %s ' 'which are not in the risk model' % missing) # same check for the consequence models, if any if any(key.endswith('_consequence') for key in oq.inputs): for taxonomy in taxonomies: cfs = self.riskmodel[taxonomy].consequence_functions if not cfs: raise ValueError( 'Missing consequenceFunctions for %s' % taxonomy) if hasattr(self, 'sitecol') and self.sitecol: self.datastore['sitecol'] = self.sitecol.complete # used in the risk calculators self.param = dict(individual_curves=oq.individual_curves, avg_losses=oq.avg_losses) # store the `exposed_value` if there is an exposure if 'exposed_value' not in set(self.datastore) and hasattr( self, 'assetcol'): self.datastore['exposed_value'] = self.assetcol.agg_value( *oq.aggregate_by)
[docs] def store_rlz_info(self, eff_ruptures=None): """ Save info about the composite source model inside the csm_info dataset """ if hasattr(self, 'csm'): # no scenario self.rlzs_assoc = self.oqparam.sm_lt_path) if not self.rlzs_assoc: raise RuntimeError('Empty logic tree: too much filtering?') self.datastore['csm_info'] = R = len(self.rlzs_assoc.realizations)'There are %d realization(s)', R) if self.oqparam.imtls: self.datastore['weights'] = arr = build_weights( self.rlzs_assoc.realizations, self.oqparam.imt_dt()) self.datastore.set_attrs('weights', nbytes=arr.nbytes) if hasattr(self, 'hdf5cache'): # no scenario with hdf5.File(self.hdf5cache, 'r+') as cache: cache['weights'] = arr if 'event_based' in self.oqparam.calculation_mode and R >= TWO16: # rlzi is 16 bit integer in the GMFs, so there is hard limit or R raise ValueError( 'The logic tree has %d realizations, the maximum ' 'is %d' % (R, TWO16)) elif R > 10000: logging.warning( 'The logic tree has %d realizations(!), please consider ' 'sampling it', R) self.datastore.flush()
[docs] def store_source_info(self, calc_times): """ Save (weight, num_sites, calc_time) inside the source_info dataset """ if calc_times: source_info = self.datastore['source_info'] arr = numpy.zeros((len(source_info), 3), F32) ids, vals = zip(*sorted(calc_times.items())) arr[numpy.array(ids)] = vals source_info['weight'] += arr[:, 0] source_info['num_sites'] += arr[:, 1] source_info['calc_time'] += arr[:, 2]
[docs] def post_process(self): """For compatibility with the engine"""
[docs]def build_hmaps(hcurves_by_kind, slice_, imtls, poes, monitor): """ Build hazard maps from a slice of hazard curves. :returns: a pair ({kind: hmaps}, slice) """ dic = {} for kind, hcurves in hcurves_by_kind.items(): dic[kind] = calc.make_hmap_array(hcurves, imtls, poes, len(hcurves)) return dic, slice_
[docs]class RiskCalculator(HazardCalculator): """ Base class for all risk calculators. A risk calculator must set the attributes .riskmodel, .sitecol, .assetcol, .riskinputs in the pre_execute phase. """
[docs] def read_shakemap(self, haz_sitecol, assetcol): """ Enabled only if there is a shakemap_id parameter in the job.ini. Download, unzip, parse USGS shakemap files and build a corresponding set of GMFs which are then filtered with the hazard site collection and stored in the datastore. """ oq = self.oqparam E = oq.number_of_ground_motion_fields oq.risk_imtls = oq.imtls or self.datastore.parent['oqparam'].imtls extra = self.riskmodel.get_extra_imts(oq.risk_imtls) if extra: logging.warning('There are risk functions for not available IMTs ' 'which will be ignored: %s' % extra)'Getting/reducing shakemap') with self.monitor('getting/reducing shakemap'): smap = oq.shakemap_id if oq.shakemap_id else numpy.load( oq.inputs['shakemap']) sitecol, shakemap, discarded = get_sitecol_shakemap( smap, oq.imtls, haz_sitecol, oq.asset_hazard_distance['default'], oq.discard_assets) if len(discarded): self.datastore['discarded'] = discarded assetcol = assetcol.reduce_also(sitecol)'Building GMFs') with self.monitor('building/saving GMFs'): imts, gmfs = to_gmfs( shakemap, oq.spatial_correlation, oq.cross_correlation, oq.site_effects, oq.truncation_level, E, oq.random_seed, oq.imtls) save_gmf_data(self.datastore, sitecol, gmfs, imts) return sitecol, assetcol
[docs] def build_riskinputs(self, kind): """ :param kind: kind of hazard getter, can be 'poe' or 'gmf' :returns: a list of RiskInputs objects, sorted by IMT. """'Building risk inputs from %d realization(s)', self.R) imtls = self.oqparam.imtls if not set(self.oqparam.risk_imtls) & set(imtls): rsk = ', '.join(self.oqparam.risk_imtls) haz = ', '.join(imtls) raise ValueError('The IMTs in the risk models (%s) are disjoint ' "from the IMTs in the hazard (%s)" % (rsk, haz)) self.riskmodel.taxonomy = self.assetcol.tagcol.taxonomy with self.monitor('building riskinputs', autoflush=True): riskinputs = list(self._gen_riskinputs(kind)) assert riskinputs'Built %d risk inputs', len(riskinputs)) return riskinputs
[docs] def get_getter(self, kind, sid): """ :param kind: 'poe' or 'gmf' :param sid: a site ID :returns: a PmapGetter or GmfDataGetter """ hdf5cache = getattr(self, 'hdf5cache', None) if hdf5cache: dstore = hdf5cache elif (self.oqparam.hazard_calculation_id and 'gmf_data' not in self.datastore): # 'gmf_data' in self.datastore happens for ShakeMap calculations self.datastore.parent.close() # make sure it is closed dstore = self.datastore.parent else: dstore = self.datastore if kind == 'poe': # hcurves, shape (R, N) getter = getters.PmapGetter(dstore, self.rlzs_assoc, [sid]) else: # gmf getter = getters.GmfDataGetter(dstore, [sid], self.R) if dstore is self.datastore: getter.init() return getter
def _gen_riskinputs(self, kind): rinfo_dt = numpy.dtype([('sid', U16), ('num_assets', U16)]) rinfo = [] assets_by_site = self.assetcol.assets_by_site() for sid, assets in enumerate(assets_by_site): if len(assets) == 0: continue getter = self.get_getter(kind, sid) for block in general.block_splitter( assets, self.oqparam.assets_per_site_limit): yield riskinput.RiskInput(getter, numpy.array(block)) rinfo.append((sid, len(block))) if len(block) >= TWO16: logging.error('There are %d assets on site #%d!', len(block), sid) self.datastore['riskinput_info'] = numpy.array(rinfo, rinfo_dt)
[docs] def execute(self): """ Parallelize on the riskinputs and returns a dictionary of results. Require a `.core_task` to be defined with signature (riskinputs, riskmodel, rlzs_assoc, monitor). """ if not hasattr(self, 'riskinputs'): # in the reportwriter return res = Starmap.apply( self.core_task.__func__, (self.riskinputs, self.riskmodel, self.param, self.monitor()), concurrent_tasks=self.oqparam.concurrent_tasks or 1, weight=get_weight ).reduce(self.combine) return res
[docs] def combine(self, acc, res): return acc + res
[docs]def get_gmv_data(sids, gmfs, events): """ Convert an array of shape (N, E, M) into an array of type gmv_data_dt """ N, E, M = gmfs.shape gmv_data_dt = numpy.dtype( [('rlzi', U16), ('sid', U32), ('eid', U64), ('gmv', (F32, (M,)))]) # NB: ordering of the loops: first site, then event lst = [(event['rlz'], sids[s], ei, gmfs[s, ei]) for s in numpy.arange(N, dtype=U32) for ei, event in enumerate(events)] return numpy.array(lst, gmv_data_dt)
[docs]def save_gmfs(calculator): """ :param calculator: a scenario_risk/damage or event_based_risk calculator :returns: a pair (eids, R) where R is the number of realizations """ dstore = calculator.datastore oq = calculator.oqparam'Reading gmfs from file') if oq.inputs['gmfs'].endswith('.csv'): # TODO: check if import_gmfs can be removed eids = import_gmfs( dstore, oq.inputs['gmfs'], calculator.sitecol.complete.sids) else: # XML eids, gmfs = readinput.eids, readinput.gmfs E = len(eids) events = numpy.zeros(E, rupture.events_dt) events['eid'] = eids calculator.eids = eids if hasattr(oq, 'number_of_ground_motion_fields'): if oq.number_of_ground_motion_fields != E: raise RuntimeError( 'Expected %d ground motion fields, found %d' % (oq.number_of_ground_motion_fields, E)) else: # set the number of GMFs from the file oq.number_of_ground_motion_fields = E # NB: save_gmfs redefine oq.sites in case of GMFs from XML or CSV if oq.inputs['gmfs'].endswith('.xml'): haz_sitecol = readinput.get_site_collection(oq) N, E, M = gmfs.shape save_gmf_data(dstore, haz_sitecol, gmfs[haz_sitecol.sids], oq.imtls, events)
[docs]def save_gmf_data(dstore, sitecol, gmfs, imts, events=()): """ :param dstore: a :class:`openquake.baselib.datastore.DataStore` instance :param sitecol: a :class:`` instance :param gmfs: an array of shape (N, E, M) :param imts: a list of IMT strings :param events: E event IDs or the empty tuple """ if len(events) == 0: E = gmfs.shape[1] events = numpy.zeros(E, rupture.events_dt) events['eid'] = numpy.arange(E, dtype=U64) dstore['events'] = events offset = 0 gmfa = get_gmv_data(sitecol.sids, gmfs, events) dstore['gmf_data/data'] = gmfa dic = general.group_array(gmfa, 'sid') lst = [] all_sids = sitecol.complete.sids for sid in all_sids: rows = dic.get(sid, ()) n = len(rows) lst.append((offset, offset + n)) offset += n dstore['gmf_data/imts'] = ' '.join(imts) dstore['gmf_data/indices'] = numpy.array(lst, U32)
[docs]def get_idxs(data, eid2idx): """ Convert from event IDs to event indices. :param data: an array with a field eid :param eid2idx: a dictionary eid -> idx :returns: the array of event indices """ uniq, inv = numpy.unique(data['eid'], return_inverse=True) idxs = numpy.array([eid2idx[eid] for eid in uniq])[inv] return idxs
[docs]def import_gmfs(dstore, fname, sids): """ Import in the datastore a ground motion field CSV file. :param dstore: the datastore :param fname: the CSV file :param sids: the site IDs (complete) :returns: event_ids, num_rlzs """ array = writers.read_composite_array(fname).array # has header rlzi, sid, eid, gmv_PGA, ... imts = [name[4:] for name in array.dtype.names[3:]] n_imts = len(imts) gmf_data_dt = numpy.dtype( [('rlzi', U16), ('sid', U32), ('eid', U64), ('gmv', (F32, (n_imts,)))]) # store the events eids = numpy.unique(array['eid']) eids.sort() E = len(eids) eid2idx = dict(zip(eids, range(E))) events = numpy.zeros(E, rupture.events_dt) events['eid'] = eids dstore['events'] = events # store the GMFs dic = general.group_array(array.view(gmf_data_dt), 'sid') lst = [] offset = 0 for sid in sids: n = len(dic.get(sid, [])) lst.append((offset, offset + n)) if n: offset += n gmvs = dic[sid] gmvs['eid'] = get_idxs(gmvs, eid2idx) gmvs['rlzi'] = 0 # effectively there is only 1 realization dstore.extend('gmf_data/data', gmvs) dstore['gmf_data/indices'] = numpy.array(lst, U32) dstore['gmf_data/imts'] = ' '.join(imts) sig_eps_dt = [('eid', U64), ('sig', (F32, n_imts)), ('eps', (F32, n_imts))] dstore['gmf_data/sigma_epsilon'] = numpy.zeros(0, sig_eps_dt) dstore['weights'] = numpy.ones((1, n_imts)) return eids