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.. blogpost:: | ||
:title: Optimisation de calcul sur GPU | ||
:keywords: tvm | ||
:date: 2019-02-03 | ||
:categories: GPU | ||
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`tvm <https://tvm.ai/>`_ est une librarie de calcul | ||
GPU hébergée sur `github/tvm <https://github.com/dmlc/tvm>`_ | ||
et démarré par les concepteurs de | ||
`xgboost <https://github.com/dmlc/xgboost>`_. | ||
C'est une librairie de calcul sur GPU un peu | ||
comme :epkg:`cupy` avec un petit bout de | ||
:epkg:`chainer`. | ||
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Le projet :epkg:`tvm` dit s'être inspiré entre autres | ||
de `Halide <https://github.com/halide/Halide>`_. | ||
La lecture des présentations citées sur la première | ||
page de la `documentation <http://halide-lang.org/>`_ | ||
sont intéressantes et donnent des idées sur la façon | ||
de coder en GPU. | ||
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Pour résumer, les libraires comme :epkg:`tvm` optimisent | ||
les calculs GPU par rapport à d'autres plus bas | ||
niveau comme :epkg:`pycuda`. Ces librairies agencent | ||
les calculs de façon efficace dans la plupart des cas | ||
mais pas forcément de façon optimale. En gros, on code | ||
beaucoup plus vite pour une performance plus que raisonnable | ||
même si ça ne produit pas nécessairement le code optimal. | ||
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Il y a beaucoup de mouvements dans le domaine du | ||
GPU en ce moment. |
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