TimingMetricTask¶

TimingMetricTask creates a wall-clock timing Measurement based on data collected by @timeMethod. It reads the raw timing data from the top-level CmdLineTask’s metadata, which is identified by the task configuration.

Processing summary¶

TimingMetricTask searches the metadata for @timeMethod-generated keys corresponding to the method of interest. If it finds matching keys, it stores the elapsed time as a Measurement.

Python API summary¶

from lsst.verify.tasks.commonMetrics import TimingMetricTask

classTimingMetricTask(**kwargs): A Task that computes a wall-clock time using metadata produced by the `lsst.pipe.base.timeMethod` decorator...

attributeconfig: Access configuration fields and retargetable subtasks.

methodrun(metadata): Compute a measurement from science task metadata...

Butler datasets¶

Input datasets¶

metadata: The metadata of the top-level command-line task (e.g., ProcessCcdTask, ApPipeTask) being instrumented. Because the metadata produced by each top-level task is a different Butler dataset type, this dataset must be explicitly configured when running TimingMetricTask or a MetricsControllerTask that contains it.

Output datasets¶

measurement: The value of the metric. The dataset type should not be configured directly, but should be set changing the package and metric template variables to the metric’s namespace (package, by convention) and in-package name, respectively. Subclasses that only support one metric should set these variables automatically.

Retargetable subtasks¶

No subtasks.

Configuration fields¶

connections¶

Data type: lsst.pipe.base.config.Connections
Field type: ConfigField

Configurations describing the connections of the PipelineTask to datatypes

metadataDimensions¶

Default: {'detector', 'visit', 'instrument'}
Field type: str ListField

Override for the dimensions of the ‘metadata’ input, when instrumenting Tasks that don’t produce one metadata object per visit.

metric¶

Default: None
Field type: str Field (optional)

The fully qualified name of the metric to store the profiling information. Deprecated: This field has been replaced by connections.package and connections.metric. It will be removed along with daf_persistence.

saveMetadata¶

Default: True
Field type: bool Field

Flag to enable/disable metadata saving for a task, enabled by default.

target¶

Default: None
Field type: str Field

The method to profile, optionally prefixed by one or more tasks in the format of lsst.pipe.base.Task.getFullMetadata().

Examples¶

from lsst.verify.tasks import TimingMetricTask

config = TimingMetricTask.ConfigClass()
config.connections.metadata = "apPipe_metadata"
config.connections.package = "pipe_tasks"
cofig.connections.metric = "ProcessCcdTime"
config.target = "apPipe:ccdProcessor.runDataRef"
task = TimingMetricTask(config=config)

# config.connections provided for benefit of MetricsControllerTask/Pipeline
# but since we've defined it we might as well use it
metadata = butler.get(config.connections.metadata)
processCcdTime = task.run(metadata).measurement

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