By Ashutosh Tiwary, Janusz Kowalik, Bob Abarbanel, John Lixvar, Vish Jumani (auth.), Lucio Grandinetti, Janusz Kowalik, Marian Vajtersic (eds.)
Most of the papers during this quantity have been offered on the NATO complex learn Workshop excessive functionality Computing: know-how and alertness, held in Cetraro, Italy from 24 to 26 of June, 1996. the most objective of the Workshop used to be to debate a few key medical and technological advancements in excessive functionality computing, determine major traits and defme fascinating examine goals. the amount constitution corresponds, typically, to the description of the workshop technical schedule: basic ideas and rising platforms, software program know-how, algorithms and functions. one of many Workshop suggestions used to be an attempt to increase a little bit the scope of the assembly from scientific/engineering computing to enterprise-wide computing. The papers on functionality and scalability of database servers, and Oracle DBMS replicate this try out we are hoping that when studying this selection of papers the readers can have a good suggestion approximately a few vital study and technological matters in excessive functionality computing. we want to provide our due to the NATO clinical and Environmental Affairs department for being the primary sponsor for the Workshop. additionally we're happy to recognize different associations and firms that supported the Workshop: eu Union: eu fee DGIII-Industry, CNR: nationwide study Council of Italy, college of Calabria, Alenia Spazio, Centro Italiano Ricerche Aerospaziali, ENEA: Italian nationwide organization for brand spanking new know-how, power and the surroundings, Fujitsu, Hewlett Packard-Convex, Hitachi, NEC, Oracle, and Silicon Graphics-Cray learn. Editors January 1997 vii record OF participants Ecole Nonnale Su¢rieure de Lyon, 69364 Abarbanel. Robert M.
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Extra info for Advances in High Performance Computing
These machines have been shown to have low remote memory accesses for standard benchmark database workloads . The impact of remote accesses can also be hidden behind local computation and memory accesses. This can either be done with the help of the application and compiler to schedule remote memory accesses much before they are needed or by overlapping it with computation using multi-threading  . The main advantage of a NUMA architecture is that by providing a shared-memory image of a distributed memory MPP, it reduces the latency of data access and improves the ease of load-balancing, compared to an MPP.
In Fig. 5we see that Cray Research, by itself, has gained back the pole position from SGI with which it switched positions if we look at the situation in June 1996. , en 80 60 40 20 o Cray Japan Inc. IBM SGI TMC inial Figure 5: The market share of the most important vendors over time. of the rise of Cray is due to the 23 early T3E installations in the list. IBM is a close second to Cray Research with 25% of systems installed. SGI/Crayand IBM hold together 2/3 of the market. The three Japanese companies Fujitsu, NEC and Hitachi have together 72 (14%) systems on the list.
Stuttgart, Germany 14 15 CNRS/IDRlS, France 16 DOD/CEWES, Vicksburg 17 7 Nat!. Lab. High Energy Physics, Japan Kyushu University 18 19 8 Cornell Theory Center 20 12 Tohuku University 22 NCSA, Univ. of Illinois 21 NERSC, Lawrence Berkeley Nat. Lab. 22 10 Maui HPCC 23 24 15 Atmospheric Env. 7 Gfiop/s, and 70 Gfiop/s would have placed an institution on rank two. There has been a tremendous acceleration of available cycles at the top supercomputer centers. In 1996 again, the number of machines at Top25 sites and their share of the total performance in Gfiop/s increased slightly.