Core Concepts
Workflow mini-apps provide simple, portable, and faithful representations of complex scientific workflows, addressing challenges in building, testing, and optimizing workflows.
Abstract
The article introduces workflow mini-apps as a solution to the challenges posed by the complexity and heterogeneity of scientific workflows. It discusses the design, implementation, and benefits of workflow mini-apps, showcasing their potential to advance the science of workflows by providing manageable representations of real-world workflows. The content is structured into sections covering the introduction, related works, design of workflow mini-apps, implementation, evaluation, performance reproducibility, portability, and scalability.
Introduction
Workflows are essential for scientific research, but their complexity and scale present challenges.
Workflow mini-apps are proposed as simplified representations of real-world workflows.
Design of Workflow Mini-Apps
Workflow mini-apps aim to balance simplicity and fidelity, enable portability, and ensure performance reproducibility.
The design process involves analyzing the original workflow, generating emulated tasks, and creating the workflow mini-app.
Implementation
The wfMiniAPI library is introduced to facilitate the creation of emulated tasks for workflow mini-apps.
Parameters of emulated tasks are tunable to match the performance characteristics of the original workflow.
Evaluation
Validation experiments demonstrate the fidelity of workflow mini-apps compared to original workflows.
Performance reproducibility is achieved with minimal variation across multiple runs of workflow mini-apps.
Portability
Workflow mini-apps offer portability across different platforms, enabling researchers to test performance characteristics in new architectures.
Results show that workflow mini-apps can estimate resource utilization and performance characteristics accurately on different HPC clusters.
Scalability
The scalability of workflow mini-apps is compared to the original workflows, showing similar scaling behavior.
Strong scaling tests demonstrate the performance improvement and I/O behavior with an increasing number of nodes.
Stats
Workflow mini-apps provide simple, portable, and managed representations of real-world workflows.
Performance reproducibility is achieved with minimal variation across multiple runs.
The scalability of workflow mini-apps shows similar behavior to the original workflows.
Quotes
"Workflow mini-apps advance the science of workflows by providing simple, portable, and faithful representations."
"Performance reproducibility is crucial, and workflow mini-apps offer a cost-effective solution."