Post on 12-Jan-2016
description
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• Scalable performance-analysis toolsetfor parallel codes
– Suitable for wide range of HPC platforms
• Analysis modes– Performance overview on call-path level via
runtime summarization – In-depth study of communication &
synchronization via automatic trace analysis• Identification of wait states
• Supported programming models – MPI 2.2 including RMA analysis – OpenMP (basic features)
• Available under the New BSD license– http://www.scalasca.org/– Installed at LLNL for TLCC, up, and BG/L
(unsupported test version)
Joint project of
2LLNL-PRES-# Directorate/Department Additional Information
Libra: Scalable Load Balance Analysis
Libra is a tool for quickly monitoring load-balance• Handles applications with large
numbers of time steps• Handles time-evolving patterns
Small, phased effort profiles displayed intuitively in surface plot• Can observe different phases of code
separately
Scalable wavelet-based compression enables use at scale
Running Application
EffortInstrumentation
ScalableCompression
ScalableVisualization