commit | bb197a6c9556cb082d580282361319918ac04c7b | [log] [tgz] |
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author | Matthias Boehm <mboehm7@gmail.com> | Sat Aug 01 01:01:55 2020 +0200 |
committer | Matthias Boehm <mboehm7@gmail.com> | Sat Aug 01 01:01:55 2020 +0200 |
tree | dffff9a767e3b0d21f09a2c394ac8acc161f51df | |
parent | ee77fadbb569d93f6738bb7b6083568a35cb3790 [diff] |
[SYSTEMDS-2594] Fix bufferpool leak in mvvar instructions (for mice) A recent rework of the mice builtin in PR #972 made the existing BufferPoolLeak test fail again. The reason was an invalid cleanup logic in mvvar (move variable) instructions that only performed this cleanup for matrix and frame operands. However, mvvar instructions don't carry the data types and thus this cleanup never happened, leading to unnecessary evictions. This patch fixes the issue and also makes the entire mvvar logic slightly more efficient (less symbol table probes).
Overview: SystemDS is a versatile 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.
Quick Start Install, Quick Start and Hello World
Documentation: SystemDS Documentation
Python Documentation Python SystemDS Documentation
Status and Build: SystemDS is still in pre-alpha status. The original code base was forked from Apache SystemML 1.2 in September 2018. We will continue to support linear algebra programs over matrices, while replacing the underlying data model and compiler, as well as substantially extending the supported functionalities. Until the first release, you can build your own snapshot via Apache Maven: mvn clean package -P distribution
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