May 2017
Intermediate to advanced
270 pages
6h 18m
English
Content preview from Python High Performance - Second Edition
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Running code on a GPU
In this subsection, we will demonstrate the usage of a GPU with Theano and Tensorflow. As an example, we will benchmark the execution of a very simple matrix multiplication on the GPU and compare it to its running time on a CPU.
The code in this subsection requires the possession of a GPU. For learning purposes, it is possible to use the Amazon EC2 service (https://aws.amazon.com/ec2) to request a GPU-enabled instance.
The following code performs a simple matrix multiplication using Theano. We use the T.matrix function to initialize a two-dimensional array, and then we use the T.dot method to perform the matrix multiplication:
from theano import function, config import theano.tensor as T import numpy as np import time ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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