Function time

Executes f() and returns a promise that resolves with timing information.

The result is an object with the following properties:

• wallMs: Wall execution time.
• kernelMs: Kernel execution time, ignoring data transfer. If using the WebGL backend and the query timer extension is not available, this will return an error object.
• On WebGL The following additional properties exist:
  • uploadWaitMs: CPU blocking time on texture uploads.
  • downloadWaitMs: CPU blocking time on texture downloads (readPixels).

const x = tf.randomNormal([20, 20]);
const time = await tf.time(() => x.matMul(x));

console.log(`kernelMs: ${time.kernelMs}, wallTimeMs: ${time.wallMs}`);
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