Tensorflow.js is an open-source library developed by Google for running machine learning models and deep learning neural networks in the browser or node environment. The tf.Environment() class includes assessed flags and the registered platform. It is every time utilized like a global singleton and can be restored from tf.env() function.
This Environment class contains five inbuilt functions which are illustrated below:
- tf.Environment class .disposeVariables() function
- tf.Environment class .enableDebugMode() function
- tf.Environment class .enableProdMode() function
- tf.Environment class .engine() function
- tf.Environment class .env() function
The tf.Environment class .disposeVariables() function is used to dispose of every single variable stored in the backend engine.
Example 1:
Javascript
// Importing the tensorflow.js libraryimport * as tf from "@tensorflow/tfjs"// Declaring a variablevar x = tf.tensor([1, 2, 3, 4]);// Calling disposeVariables() methodtf.disposeVariables();// Printing outputconsole.log("Variables disposed.") |
Output:
Variables disposed.
The tf.Environment class .enableDebugMode() function is used to enable the debug mode that would register data regarding every single executed kernel i.e. the runout time of the kernel implementation, including the rank, size, as well as the shape of the resultant tensor.
Example 2:
Javascript
// Importing the tensorflow.js libraryimport * as tf from "@tensorflow/tfjs"// Calling enableDebugMode() methodawait tf.enableDebugMode();// Setting prod mode of the// environmenttf.env().set('PROD', false);// Printing outputconsole.log(tf.env().flags); |
Output:
{
"IS_BROWSER": true,
"IS_NODE": false,
"DEBUG": true,
"CPU_HANDOFF_SIZE_THRESHOLD": 128,
"PROD": false
}
The tf.Environment class .enableProdMode() function is used to enable the mode of production that deactivates the exactness restraints in support of the production.
Example 3:
Javascript
// Importing the tensorflow.js libraryimport * as tf from "@tensorflow/tfjs"// Calling enableProdMode() methodawait tf.enableProdMode();// Setting debug mode of the// environmenttf.env().set('DEBUG', false);// Printing outputconsole.log(tf.env().flags); |
Output:
{
"IS_BROWSER": true,
"IS_NODE": false,
"DEBUG": false,
"CPU_HANDOFF_SIZE_THRESHOLD": 128,
"PROD": true,
"WEBGL_VERSION": 2,
"HAS_WEBGL": true,
"WEBGL_CHECK_NUMERICAL_PROBLEMS": false,
"IS_TEST": false,
"WEBGL_CPU_FORWARD": true,
"WEBGL_MAX_TEXTURE_SIZE": 16384,
"WEBGL_FORCE_F16_TEXTURES": true,
"WEBGL_RENDER_FLOAT32_CAPABLE": true,
"WEBGL_RENDER_FLOAT32_ENABLED": true,
"WEBGL_FLUSH_THRESHOLD": -1,
"WEBGL_PACK": true,
"WEBGL_LAZILY_UNPACK": true,
"WEBGL_DELETE_TEXTURE_THRESHOLD": -1,
"WEBGL_PACK_BINARY_OPERATIONS": true,
"WEBGL_USE_SHAPES_UNIFORMS": false,
"WEBGL_PACK_UNARY_OPERATIONS": true,
"WEBGL_DOWNLOAD_FLOAT_ENABLED": true,
"WEBGL_CONV_IM2COL": true,
"WEBGL_PACK_DEPTHWISECONV": true,
"WEBGL_MAX_TEXTURES_IN_SHADER": 16,
"WEBGL_PACK_ARRAY_OPERATIONS": true
}
The tf.Environment class .engine() function is used to return the global engine which saves the path of every single tensor as well as backends.
Example 4:
Javascript
// Importing the tensorflow.js libraryimport * as tf from "@tensorflow/tfjs"// Calling engine() and startScope()// methodtf.engine().startScope(); // Calling ones() methodconst res = tf.ones([200, 250]);// Printing outputconsole.log(res); |
Output:
Tensor
[[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1],
...,
[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1]]
The tf.Environment class .env() function is used to return the present environment i.e. a global entity. Moreover, the environment object includes the assessed attribute values along with the dynamic platform.
Example 5:
Javascript
// Importing the tensorflow.js libraryimport * as tf from "@tensorflow/tfjs"// Calling env() and getBool() method// along with its parameterconst res = tf.env().getBool('WEBGL_RENDER_FLOAT32_ENABLED');// Printing outputconsole.log(res); |
Output:
true
Reference: https://js.tensorflow.org/api/latest/#class:Environment
