'Real 8' presentation slideshows

Effectively Addressing Memory David Skinner, NERSC Division, Berkeley Lab

Effectively Addressing Memory David Skinner, NERSC Division, Berkeley Lab. Abstract: A demonstration of how loop control structures impact memory bandwidth and program performance is presented. The performance of various loops and memory addressing idioms in different languages with

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Optimal coding practices for IBM POWER4 processors

Optimal coding practices for IBM POWER4 processors. Getting the most out of AIX, xlf, and xlc. or. Steve Behling IBM Corporation sbehling@us.ibm.com. Outline. Some hardware details Some software discussions My favorite hints Questions. CPU. Register. Cache. Main Memory. Disk.

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12.010 Computational Methods of Scientific Programming

12.010 Computational Methods of Scientific Programming. Lecturers Thomas A Herring, Room 54-820A, tah@mit.edu Chris Hill, Room 54-1511, cnh@gulf.mit.edu Web page http://geoweb.mit.edu/~tah/12.010. Review of last lecture. Start examining the FORTRAN language Development of the language

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High Performance Computing Code for Pyroclastic Flows Simulations

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An Introduction

An Introduction. Dmitri Kavetski, Michael Leonard, Mark Thyer, June 2009. Introduction. Fortran 90/95 (F95) is a well established language many legacy programs written in F95 users may be attracted to F95 advantages (speed, memory, object handling, etc.)

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N-Tuples within Gaudi

N-Tuples within Gaudi. Definition Usage Run through simplified example The persistent back-end. ConversionSvc. PHist. PNTup. N-tuple Service. JobOptionsSvc. AppManager. Converter. Alg. Properties. MessageSvc. AlgFactory. EventSelector. Algorithm1. Algorithm1. PObj.

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N-Tuples within Gaudi

N-Tuples within Gaudi. Definition Usage Run through simplified example The persistent back-end. ConversionSvc. PHist. PNTup. N-tuple Service. JobOptionsSvc. AppManager. Converter. Alg. Properties. MessageSvc. AlgFactory. EventSelector. Algorithm1. Algorithm1. PObj.

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GEOS-Chem Adjoint: construction and long-term maintainability

GEOS-Chem Adjoint: construction and long-term maintainability. A. Sandu , K. Singh: Virginia Tech D. Henze: Caltech K. Bowman: JPL. Adjoints enable sensitivity analysis and information feedback loops between GEOS-Chem and observations. Transport Meteorology. Optimal analysis state.

361 views • 15 slides

12.010 Computational Methods of Scientific Programming

12.010 Computational Methods of Scientific Programming. Lecturers Thomas A Herring, Room 54-820A, tah@mit.edu Chris Hill, Room 54-1511, cnh@gulf.mit.edu Web page http://www-gpsg.mit.edu/~tah/12.010. Mathematica. Look in more detail at some of the programming features in Mathematica

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Project 1 results nmax=100

Project 1 results nmax=100. Dependence on nmax. Wave function n=1. Wave function n=2. Wave function n=3. Wave function n=4. Wave function n=5. Specification part. implicit none INTEGER, PARAMETER :: nmax=100 INTEGER, PARAMETER :: nbin=1000

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