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DTSTART;TZID=America/Chicago:20181116T083000
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UID:submissions.supercomputing.org_SC18_sess144@linklings.com
SUMMARY:PAW-ATM: Parallel Applications Workshop - Alternatives to MPI
DESCRIPTION:Efficient Algorithms for Collective Operations with Notified C
 ommunication in Shared Windows\n\nCollective operations are commonly used 
 in various parts of scientific applications. Especially in strong scaling 
 scenarios, collective operations can negatively impact the overall applica
 tions performance: while the load per rank decreases with increasing core 
 counts, time spent in e.g. barrier ope...\n\n\nMuhammed Abdullah Al Ahad (
 KTH Royal Institute of Technology), Christian Simmendinger (T-System Solut
 ions for Research), Roman Iakymchuk (KTH Royal Institute of Technology), T
 iberiu Rotaru (Fraunhofer ITWM), and Erwin Laure and Stefano Markidis (KTH
  Royal Institute of Technology)\n---------------------\nGASNet-EX Performa
 nce Improvements Due to Specialization for the Cray Aries Network\n\nGASNe
 t-EX is a portable, open-source, high-performance communication library de
 signed to efficiently support the networking requirements of PGAS runtime 
 systems and other alternative models in future exascale machines. This pap
 er reports on the improvements in performance observed on Cray XC-series .
 ..\n\n\nPaul H. Hargrove and Dan Bonachea (Lawrence Berkeley National Labo
 ratory)\n---------------------\nComparison of the HPC and Big Data Java Li
 braries Spark, PCJ and APGAS\n\nAlthough Java is rarely used in HPC, there
  are a few notable libraries. Use of Java may help to bridge the gap betwe
 en HPC and big data processing.\n\nThis paper compares the big data librar
 y Spark, and the HPC libraries PCJ and APGAS, regarding productivity and p
 erformance.  We refer to Java versions...\n\n\nJonas Posner, Claudia Fohry
 , and Lukas Reitz (University of Kassel)\n---------------------\nComputati
 onal Cosmology and Astrophysics on Adaptive Meshes Using Charm++\n\nAstrop
 hysical and cosmological phenomena involve a large variety of physical pro
 cesses, and can encompass an enormous range of scales. To effectively inve
 stigate these phenomena computationally, applications must similarly suppo
 rt modeling these phenomena on enormous ranges of scales; furthermore, t..
 .\n\n\nJames Bordner and Michael L. Norman (San Diego Supercomputer Center
 ; University of California, San Diego)\n---------------------\nChapel Aggr
 egation Library (CAL)\n\nFine-grained communication is a fundamental princ
 iple of the Partitioned Global Address Space (PGAS), which serves to simpl
 ify creating and reasoning about programs in the distributed context. Howe
 ver, per-message overheads of communication rapidly accumulate in programs
  that generate a high volume ...\n\n\nLouis Jenkins and Marcin Zalewski (P
 acific Northwest National Laboratory) and Michael Ferguson (Cray Inc.)\n--
 -------------------\nDevelopment and Performance Comparison of MPI and For
 tran Coarrays within an Atmospheric Research Model\n\nA mini-application o
 f the Intermediate Complexity Research (ICAR) Model offers an opportunity 
 to compare the costs and performance of the Message Passing Interface (MPI
 ) versus coarray Fortran, two methods of communication across processes. T
 he application requires repeated communication of halo reg...\n\n\nSoren C
 . Rasmussen (Cranfield University), Ethan D Gutmann (National Center for A
 tmospheric Research), Brian Friesen (Lawrence Berkeley National Laboratory
 ), Damian Rouson (Sourcery Institute), and Salvatore Filippone and Irene M
 oulitsas (Cranfield University)\n---------------------\nDistributed L-Shap
 ed Algorithms in Julia\n\nWe present L-Shaped Solvers, a suite of scalable
  stochastic programming solvers implemented in the Julia programming langu
 age. The solvers, which are based on the L-shaped algorithm, run efficient
 ly in parallel, exploit problem structure, and operate on distributed data
 . The implementation introduce...\n\n\nMartin Biel and Mikael Johansson (K
 TH Royal Institute of Technology)\n---------------------\nAn Application P
 erspective on Programming Models for the Future\n\nAnshu Dubey (Argonne Na
 tional Laboratory)\n---------------------\nSemi-Static and Dynamic Load Ba
 lancing for Asynchronous Hurricane Storm Surge Simulations\n\nThe performa
 nce of hurricane storm surge simulations is critical to forecast and mitig
 ate the deadly effects of hurricane landfall. Supercomputers play a key ro
 le to run these simulations quickly; however, disruptive changes in future
  computer architectures will require adapting simulators to mainta...\n\n\
 nMaximilian H. Bremer (University of Texas at Austin) and John D. Bachan a
 nd Cy P. Chan (Lawrence Berkeley National Laboratory)\n-------------------
 --\nPanel Discussion\n\nBenjamin Robbins (Cray Inc), Abhinav Bhatele (Lawr
 ence Livermore National Laboratory), Bradford L. Chamberlain (Cray Inc), A
 nshu Dubey (Argonne National Laboratory), Salvatore Filippone (Cranfield U
 niversity), and Kimberly Keeton (Hewlett Packard Enterprise)\n------------
 ---------\nWorkshop Morning Break\n---------------------\nIntroduction - P
 AW-ATM: Parallel Applications Workshop - Alternatives to MPI\n\nThe increa
 sing complexity in heterogeneous and hierarchical parallel architectures a
 nd technologies has put a stronger emphasis on the need for more effective
  parallel programming techniques. Traditional low-level approaches place a
  greater burden on application developers who must use a mix of dist...\n\
 n\nKarla Morris (Sandia National Laboratories), Bradford Chamberlain (Cray
  Inc), Salvatore Filippone (Cranfield University), and Costin Iancu (Lawre
 nce Berkeley National Laboratory)\n\nTag: Parallel Programming Languages, 
 Libraries, and Models, Productivity\n\nRegistration Category: Workshop Reg
  Pass
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