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[:memo:] Extend python docs with lineage tracing #134
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corepointer
suggested changes
Mar 27, 2020
| Lineage Trace API | ||
| ================= | ||
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| Lineage tracing captures every instruction during runtime and store those in a DAG. |
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...and stores them...
| ================= | ||
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| Lineage tracing captures every instruction during runtime and store those in a DAG. | ||
| An user can retreive the string representation of a lineage trace by enabling |
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| A *lineage item* is composed of an *id*, which is uniquely identifiable | ||
| through an execution, an *opcode* for identifying the physical operation, |
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The id is uniquely identifiable through an execution? Do you mean, that the id uniquely identifies the lineage item throughout a single execution?
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| captured instruction, and a *data* attribute, which represents all necessary | ||
| information. It also stores references to other *lineage items* |
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The data attribute represents all necessary information to do what? What do I need the other things like name and id for, when the data attribute represents it all?
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| .. note:: | ||
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| Lineage trace is captured during execution of an instruction in SystemDS. |
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| Lineage trace is captured during execution of an instruction in SystemDS. | ||
| That means, tracing lineage for an intermediate requires SystemDS to lazily | ||
| execute the DAG of operations till the desired node. |
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...until the desired node has been processed.
| That means, tracing lineage for an intermediate requires SystemDS to lazily | ||
| execute the DAG of operations till the desired node. | ||
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| The example below traces lineage of an DAG of operations. |
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