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DTSTAMP:20181221T160907Z
LOCATION:D168
DTSTART;TZID=America/Chicago:20181116T083000
DTEND;TZID=America/Chicago:20181116T120000
UID:submissions.supercomputing.org_SC18_sess144@linklings.com
SUMMARY:PAW-ATM: Parallel Applications Workshop - Alternatives to MPI
DESCRIPTION:Workshop\nParallel Programming Languages, Libraries, and Model
 s, Productivity, Workshop Reg Pass\n\nEfficient Algorithms for Collective 
 Operations with Notified Communication in Shared Windows\n\nAhad, Simmendi
 nger, Iakymchuk, Rotaru, Laure...\n\nCollective operations are commonly us
 ed in various parts of scientific applications. Especially in strong scali
 ng scenarios, collective operations can negatively impact the overall appl
 ications performance: while the load per rank decreases with increasing co
 re counts, time spent in e.g. barrier ope...\n\n---------------------\nCha
 pel Aggregation Library (CAL)\n\nJenkins, Zalewski, Ferguson\n\nFine-grain
 ed communication is a fundamental principle of the Partitioned Global Addr
 ess Space (PGAS), which serves to simplify creating and reasoning about pr
 ograms in the distributed context. However, per-message overheads of commu
 nication rapidly accumulate in programs that generate a high volume ...\n\
 n---------------------\nIntroduction - PAW-ATM: Parallel Applications Work
 shop - Alternatives to MPI\n\nMorris, Chamberlain, Filippone, Iancu\n\nThe
  increasing complexity in heterogeneous and hierarchical parallel architec
 tures and technologies has put a stronger emphasis on the need for more ef
 fective parallel programming techniques. Traditional low-level approaches 
 place a greater burden on application developers who must use a mix of dis
 t...\n\n---------------------\nSemi-Static and Dynamic Load Balancing for 
 Asynchronous Hurricane Storm Surge Simulations\n\nBremer, Bachan, Chan\n\n
 The performance of hurricane storm surge simulations is critical to foreca
 st and mitigate the deadly effects of hurricane landfall. Supercomputers p
 lay a key role to run these simulations quickly; however, disruptive chang
 es in future computer architectures will require adapting simulators to ma
 inta...\n\n---------------------\nGASNet-EX Performance Improvements Due t
 o Specialization for the Cray Aries Network\n\nHargrove, Bonachea\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---------------------\nWorkshop Morning Break\n\n\n\n---------------
 ------\nDevelopment and Performance Comparison of MPI and Fortran Coarrays
  within an Atmospheric Research Model\n\nRasmussen, Gutmann, Friesen, Rous
 on, Filippone...\n\nA mini-application of the Intermediate Complexity Rese
 arch (ICAR) Model offers an opportunity to compare the costs and performan
 ce of the Message Passing Interface (MPI) versus coarray Fortran, two meth
 ods of communication across processes. The application requires repeated c
 ommunication of halo reg...\n\n---------------------\nPanel Discussion\n\n
 Robbins, Bhatele, Chamberlain, Dubey, Filippone...\n\n--------------------
 -\nDistributed L-Shaped Algorithms in Julia\n\nBiel, Johansson\n\nWe prese
 nt L-Shaped Solvers, a suite of scalable stochastic programming solvers im
 plemented in the Julia programming language. The solvers, which are based 
 on the L-shaped algorithm, run efficiently in parallel, exploit problem st
 ructure, and operate on distributed data. The implementation introduce...\
 n\n---------------------\nAn Application Perspective on Programming Models
  for the Future\n\nDubey\n\n---------------------\nComputational Cosmology
  and Astrophysics on Adaptive Meshes Using Charm++\n\nBordner, Norman\n\nA
 strophysical and cosmological phenomena involve a large variety of physica
 l processes, and can encompass an enormous range of scales. To effectively
  investigate these phenomena computationally, applications must similarly 
 support modeling these phenomena on enormous ranges of scales; furthermore
 , t...\n\n---------------------\nComparison of the HPC and Big Data Java L
 ibraries Spark, PCJ and APGAS\n\nPosner, Fohry, Reitz\n\nAlthough Java is 
 rarely used in HPC, there are a few notable libraries. Use of Java may hel
 p to bridge the gap between HPC and big data processing.\n\nThis paper com
 pares the big data library Spark, and the HPC libraries PCJ and APGAS, reg
 arding productivity and performance.  We refer to Java versions...\n
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