🗊Презентация TechDays

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TechDays, слайд №1
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General Programming on Graphical Processing Units
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General Programming on Graphical Processing Units

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What is GPGPU? GPU were traditionally dedicated to graphical rendering … … but their capability is really vectorized computation Enters General Programming GPU (GPGPU)
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What is GPGPU? GPU were traditionally dedicated to graphical rendering … … but their capability is really vectorized computation Enters General Programming GPU (GPGPU)

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GPGPU Programming Paradigm
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GPGPU Programming Paradigm

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Why do we care about Ada? (1/2)
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Why do we care about Ada? (1/2)

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Why do we care about Ada (2/2) Signal processing Machine learning Monte-carlo simulation Trajectory prediction Cryptography Image processing Physical simulation … and much more!
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Why do we care about Ada (2/2) Signal processing Machine learning Monte-carlo simulation Trajectory prediction Cryptography Image processing Physical simulation … and much more!

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Available Hardware
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Available Hardware

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Ada Support
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Ada Support

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Three options Interfacing with existing libraries “Ada-ing” existing languages Ada 2020
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Three options Interfacing with existing libraries “Ada-ing” existing languages Ada 2020

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Interfacing existing libraries Already possible and straightforward effort “gcc –fdump-ada-specs” will provide a first binding of C to Ada We could provide “thick” bindings to e.g. Ada.Numerics matrix operations
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Interfacing existing libraries Already possible and straightforward effort “gcc –fdump-ada-specs” will provide a first binding of C to Ada We could provide “thick” bindings to e.g. Ada.Numerics matrix operations

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“Ada-ing” existing languages CUDA – kernel-based language specific to NVIDIA OpenCL – portable version of CUDA OpenACC – integrated language marking parallel loops
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“Ada-ing” existing languages CUDA – kernel-based language specific to NVIDIA OpenCL – portable version of CUDA OpenACC – integrated language marking parallel loops

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CUDA Example (Device code)
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CUDA Example (Device code)

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CUDA Example (Host code)
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CUDA Example (Host code)

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OpenCL example Similar to CUDA in principle Requires more code on the host code (no call conventions)
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OpenCL example Similar to CUDA in principle Requires more code on the host code (no call conventions)

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OpenACC example (Device & Host)
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OpenACC example (Device & Host)

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Ada 2020
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Ada 2020

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Lots of other language considerations Identification of memory layout (per thread, per block, global) Thread allocation specification Reduction (ability to aggregate results through operators e.g. sum or concatenation) Containers Mutual exclusion …
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Lots of other language considerations Identification of memory layout (per thread, per block, global) Thread allocation specification Reduction (ability to aggregate results through operators e.g. sum or concatenation) Containers Mutual exclusion …

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A word on SPARK
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A word on SPARK

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Next Steps AdaCore spent 1 year to run various studies and experiments Finalizing an OpenACC proof of concept on GCC About to start an OpenCL proof of concept on CCG If you want to give us feedback or register to try technology, contact us on info@adacore.com
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Next Steps AdaCore spent 1 year to run various studies and experiments Finalizing an OpenACC proof of concept on GCC About to start an OpenCL proof of concept on CCG If you want to give us feedback or register to try technology, contact us on info@adacore.com

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