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Effectively Addressing Memory David Skinner, NERSC Division, Berkeley Lab

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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457 views • 35 slides
Principles of Programming Languages

Principles of Programming Languages

Principles of Programming Languages. Lecture 06 Parameters. Parameter Passing Modes. Definitional Modes (call time binding) Call as constant CAC Call by reference CBR Copying Modes (call time copying) Call by value CBV Call by copy CBC Copy-in/copy-out Call by value-result CBVR

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431 views • 31 slides
Principles of Programming Languages

Principles of Programming Languages

Principles of Programming Languages. Lecture 06 Parameters. Parameter Passing Modes. Definitional Modes (call time binding) Call as constant CAC Call by reference CBR Copying Modes (call time copying) Call by value CBV Call by copy CBC Copy-in/copy-out Call by value-result CBVR

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348 views • 31 slides
Adding Binary Numbers

Adding Binary Numbers

0 0 1 0 + 1 1 0 0 = 1 1 1 0. 1. 0 0 1 0 + 1 0 1 0 = 1 1 0 0. 1. 1. 1. 0 1 1 0 + 1 1 1 0 = 1 0 1 0 0. Adding Binary Numbers. Binary addition is similar to decimal addition 0+0 = 0 0+1 = 1 1+0 = 1 1+1 = 10. Carry-Out of bit 1, carry-In to bit 2.

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1.87k views • 15 slides
New Progress in Open MPI p2p communication: Elan and Sicortex

New Progress in Open MPI p2p communication: Elan and Sicortex

New Progress in Open MPI p2p communication: Elan and Sicortex. Teng Ma, George Bosilca @2008 ICL retreat. P2p communication in Open-MPI. MPI application. MPI level. PML(p2p management layer) OB1 or DR . BML(BTL management layer). MX BTL. Elan BTL. UDAPL BTL. SM BTL. OFUD BTL.

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313 views • 15 slides

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