38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
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const ARRAY_SIZE = 15000576; // 100 million items
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function getTime() {
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return performance.now() / 1000; // returns time in seconds
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}
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function main() {
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const a = new Float32Array(ARRAY_SIZE);
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const b = new Float32Array(ARRAY_SIZE);
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const c = new Float32Array(ARRAY_SIZE);
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// Initialize arrays
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const start = getTime();
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for (let i = 0; i < ARRAY_SIZE; i++) {
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a[i] = i;
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b[i] = i * 2;
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}
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const initTime = getTime() - start;
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// Perform the calculation
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const startCalc = getTime();
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for (let i = 0; i < ARRAY_SIZE; i++) {
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c[i] = a[i] + b[i];
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}
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const calcTime = getTime() - startCalc;
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// Print timing results
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console.log(`Array initialization time: ${(initTime * 1000).toFixed(3)} ms`);
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console.log(`Calculation time: ${(calcTime * 1000).toFixed(3)} ms`);
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console.log(`Total time: ${((initTime + calcTime) * 1000).toFixed(3)} ms`);
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// Print a sample of the result
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for (let i = 0; i < 10; i++) {
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console.log(`c[${i}] = ${c[i]}`);
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}
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}
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main();
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