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When using forecastingShellCount = n every underlying loop is split into n parts. Every FS instance is running the same specified activity but skipping the part of the ensemble loop / location loop that is meant for an other FS instance. It is not allowed to start a nested parallel when you are in a ensemble/location loop parallel.
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If Before 2019.02 if an existing scheduled workflow is redefined as a parallel workflow, it needs to be rescheduled to prevent errors. In the worst case situation the MC may become unavailable. |
The current implementation of multipleForecastingShells=true does not come with intelligence that will take into account the runIndepent=true flag. If one of the partitioned taskRuns fails, the other partitions that are not completed yet will be terminated.
workflow:sequence
Grouping to enforce sequential execution of multiple activities as they generally have data dependencies. Typically used in workflows where parallel activities are defined to clarify which activities have be to executed in sequence.
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<workflow version="1.1" xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/workflow.xsd"> <activity> <runIndependent>false</runIndependent> <moduleInstanceId>Astronomical</moduleInstanceId> </activity> <activity> <runIndependent>true</runIndependent> <moduleInstanceId>BackupPrecipitation_Forecast</moduleInstanceId> </activity> <runIndependent>true</runIndependent> <moduleInstanceId>PrecipitationGaugeToGrid_Forecast</moduleInstanceId> </activity> <activity> <runIndependent>true</runIndependent> <moduleInstanceId>Spatial_Interpolation_Precipitation_Forecast</moduleInstanceId> </activity> <activity> <runIndependent>true</runIndependent> <moduleInstanceId>MergePrecipitation_Forecast</moduleInstanceId> </activity> <activity> <runIndependent>true</runIndependent> <moduleInstanceId>GridToCatchments_Forecast</moduleInstanceId> </activity> <activity> <runIndependent>true</runIndependent> <moduleInstanceId>Singapore_Sobek_Forecast</moduleInstanceId> </activity> </workflow> |
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