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Compare n-body to asmjs and js

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This commit is contained in:
dcodeIO
2018-04-23 15:04:04 +02:00
parent 80d104201c
commit 78a3dcfaf0
10 changed files with 4285 additions and 3390 deletions
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63
examples/n-body/tests/index.js
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@ -1,10 +1,59 @@
var nbody = require("..");
const fs = require("fs");
var steps = process.argv.length > 2 ? parseInt(process.argv[2], 10) : 1000000;
console.log("Performing " + steps + " steps ...");
// Load WASM version
const nbodyWASM = require("../index.js");
var start = process.hrtime();
var energy = nbody.bench(steps);
var time = process.hrtime(start);
// Load ASMJS version
src = fs.readFileSync(__dirname + "/../build/optimized.asm.js", "utf8");
if (src.indexOf("var Math_sqrt =") < 0) { // currently missing in asm.js output
let p = src.indexOf(" var abort = env.abort;");
src = src.substring(0, p) + " var Math_sqrt = global.Math.sqrt;\n " + src.substring(p);
}
var nbodyASMJS = eval("0," + src)({
Int8Array,
Int16Array,
Int32Array,
Uint8Array,
Uint16Array,
Uint32Array,
Float32Array,
Float64Array,
Math
}, {
abort: function() { throw Error(); }
}, new ArrayBuffer(0x10000));
console.log("Took " + (time[0] * 1e3 + time[1] / 1e6) + "ms (energy=" + energy + ")");
// Load JS version
var src = fs.readFileSync(__dirname + "/../build/index.js", "utf8");
var nbodyJS = (new Function("require", "exports", src + " return exports;"))(function() {}, {});
function test(nbody, steps) {
nbody.init();
var start = process.hrtime();
nbody.bench(steps);
return process.hrtime(start);
}
var steps = process.argv.length > 2 ? parseInt(process.argv[2], 10) : 10000000;
console.log("Warming up ...");
test(nbodyWASM, 100000);
test(nbodyASMJS, 100000);
test(nbodyJS, 100000);
setTimeout(() => {
var time;
console.log("Performing " + steps + " steps (WASM) ...");
time = test(nbodyWASM, steps);
console.log("Took " + (time[0] * 1e3 + time[1] / 1e6) + "ms");
console.log("Performing " + steps + " steps (ASMJS) ...");
time = test(nbodyASMJS, steps);
console.log("Took " + (time[0] * 1e3 + time[1] / 1e6) + "ms");
console.log("Performing " + steps + " steps (JS) ...");
time = test(nbodyJS, steps);
console.log("Took " + (time[0] * 1e3 + time[1] / 1e6) + "ms");
}, 1000);