| commit | 4731dba8cfdd7d76d497f25cf3cd7465b0f688a6 | [log] [tgz] |
|---|---|---|
| author | Matthias Boehm <mboehm7@gmail.com> | Mon Jul 03 18:56:46 2023 +0200 |
| committer | Matthias Boehm <mboehm7@gmail.com> | Mon Jul 03 18:56:46 2023 +0200 |
| tree | 88fdfdf5267a7032aa874b771c71d954d2662f5c | |
| parent | 55305031bce20e17eae90a8a9a89334332ca33ba [diff] |
[SYSTEMDS-3591] Fix variable cleanup of function return values This patch fixes a special case of properly cleaning up variables that are overwritten by function return values. Specifically, when a function [curr_rows_queue, curr_rows_vector] = dataQueuePop(curr_rows_queue) passes its input to the output but instead of assigning it to the same variable assigns it to a different variable (here curr_rows_queue -> curr_rows_vector), we would not recognize that the old curr_rows_queue should not be cleaned up (removed in-memory block/hdfs files). The difference to normal rmvar/mvvar instructions is that we need to be aware of both execution contexts between we transition on function return. The actual fix was then trivial. Furthermore, this patch also includes a small corruption of the indexing rewrite which came in with the previous commit.
Overview: SystemDS is an open source ML system for the end-to-end data science lifecycle from data integration, cleaning, and feature engineering, over efficient, local and distributed ML model training, to deployment and serving. To this end, we aim to provide a stack of declarative languages with R-like syntax for (1) the different tasks of the data-science lifecycle, and (2) users with different expertise. These high-level scripts are compiled into hybrid execution plans of local, in-memory CPU and GPU operations, as well as distributed operations on Apache Spark. In contrast to existing systems - that either provide homogeneous tensors or 2D Datasets - and in order to serve the entire data science lifecycle, the underlying data model are DataTensors, i.e., tensors (multi-dimensional arrays) whose first dimension may have a heterogeneous and nested schema.
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Status and Build: SystemDS is renamed from SystemML which is an Apache Top Level Project. To build from source visit SystemDS Install from source
