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Title: Alliance for application Performance at EXtreme scale.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the ACS JOWOG34 held February 2-5, 2015 in Albuquerque, NM.
Country of Publication:
United States

Citation Formats

Laros, James H.,. Alliance for application Performance at EXtreme scale.. United States: N. p., 2015. Web.
Laros, James H.,. Alliance for application Performance at EXtreme scale.. United States.
Laros, James H.,. 2015. "Alliance for application Performance at EXtreme scale.". United States. doi:.
title = {Alliance for application Performance at EXtreme scale.},
author = {Laros, James H.,},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 1

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  • Los Alamos and Sandia National Laboratories have formed a new high performance computing center, the Alliance for Computing at the Extreme Scale (ACES). The two labs will jointly architect, develop, procure and operate capability systems for DOE's Advanced Simulation and Computing Program. This presentation will discuss a petascale production capability system, Cielo, that will be deployed in late 2010, and a new partnership with Cray on advanced interconnect technologies.
  • Abstract not provided.
  • Performance modeling of extreme-scale applications on accurate representations of potential architectures is critical for designing next generation supercomputing systems because it is impractical to construct prototype systems at scale with new network hardware in order to explore designs and policies. However, these simulations often rely on static application traces that can be difficult to work with because of their size and lack of flexibility to extend or scale up without rerunning the original application. To address this problem, we have created a new technique for generating scalable, flexible workloads from real applications, we have implemented a prototype, called Durango, thatmore » combines a proven analytical performance modeling language, Aspen, with the massively parallel HPC network modeling capabilities of the CODES framework.Our models are compact, parameterized and representative of real applications with computation events. They are not resource intensive to create and are portable across simulator environments. We demonstrate the utility of Durango by simulating the LULESH application in the CODES simulation environment on several topologies and show that Durango is practical to use for simulation without loss of fidelity, as quantified by simulation metrics. During our validation of Durango's generated communication model of LULESH, we found that the original LULESH miniapp code had a latent bug where the MPI_Waitall operation was used incorrectly. This finding underscores the potential need for a tool such as Durango, beyond its benefits for flexible workload generation and modeling.Additionally, we demonstrate the efficacy of Durango's direct integration approach, which links Aspen into CODES as part of the running network simulation model. Here, Aspen generates the application-level computation timing events, which in turn drive the start of a network communication phase. Results show that Durango's performance scales well when executing both torus and dragonfly network models on up to 4K Blue Gene/Q nodes using 32K MPI ranks, Durango also avoids the overheads and complexities associated with extreme-scale trace files.« less
  • A lead contractor integrated service alliance was formed for the development drilling program of the Xijiang 24-3 and 30-2 fields in the South China Sea. The scope of the alliance covered the drilling and completion of all development wells (approximately 30), to include most drilling and completion services and management and coordination of subordinate services and logistics. The paper reviews the scope and structure of the Alliance and the incentive program, and compares projected benefits with actual performance achieved. The paper focuses on four key aspects: The Xijiang Development Plan; the role of the service alliance within the development plan,more » addressing Phillips` vision and goals for the alliance, and how the alliance was structured; the actual performance achieved from the Alliance; and some views on potential applications for Alliances of this type in the future.« less