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test.html
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<!doctype html>
<!-- Copyright Guillaume Lathoud 2016
Boost License: see the file ./LICENSE
-->
<html>
<head>
<meta charset=utf-8/>
<title>transfun: tests</title>
<link rel="stylesheet" type="text/css" href="rsrc_web/prettify/prettify.css"/>
<style type="text/css">
body { font-family: helvetica; }
.section-anchor { font-size : 90%; font-decoration: none; }
.license { width: 110%; height: 400px; border: none; margin: 0; paddin: 0; overflow: hidden; }
</style>
<script type="text/javascript" src="transfun.js"></script>
<script type="text/javascript" src="plugin/devilappfun.js"></script>
<script type="text/javascript" src="plugin/parallel.js"></script>
<script type="text/javascript" src="rsrc_web/opinel.js"></script>
<script type="text/javascript" src="test.js"></script>
</head>
<body>
<script type="text/javascript">
var code_impl_transfun_redinit = "tfun.map( '.p' ).filter( '!=null' ).redinit( '0', '+' )"
, code_impl_transfun_reduce = "tfun.map( '.p' ).filter( '!=null' ).reduce( '+' )"
;
(function () {
var st_arr = [];
document.write(
[
hh.p( '← ' + hh( 'a href="./index.html"', 'Back to the article' ))
, hh.h1( 'transfun: tests' )
, section_title_with_anchor( '', 'Contents' )
, hh( 'p id="contents"' )
, hh.hr()
, section_title_with_anchor( 'gen-code-expl', 'Generated code: examples' )
, hh.pre( hh( 'code id="gen-code-expl-code" class="prettyprint lang-js"', ' ' ) )
, hh.hr()
, section_title_with_anchor( 'speed-test', 'Speed test: Run it!' )
, hh.p( 'Similar to: ' +
hh( 'a target="_blank" href="http://jsperf.com/arr-map-filter-reduce/4"'
, 'http://jsperf.com/arr-map-filter-reduce/4'
)
)
, hh.p( 'with additionally:' )
, hh.pre( hh.ul([
hh.li( hh.code( "transfun_redinit = " + code_impl_transfun_redinit ) )
, hh.li( hh.code( "transfun_reduce = " + code_impl_transfun_reduce ) )
]))
, hh( 'button id="speed-test-start" style="display: none"', 'Start!' )
, hh( 'div id="spt-out-cont" style="display: none;"'
, hh.pre( hh( 'code id="speed-test-useragent"', navigator.userAgent ) ) +
hh.pre( hh( 'code id="speed-test-result"', ' ' ) )
)
, hh.hr()
, section_title_with_anchor( 'example-speed-test-result', 'Speed test: Example results' )
, hh( 'div id="estr-data-cont"' )
, hh.hr()
, section_title_with_anchor( 'parallel-speed-test', 'Parallel speed test: Run it!' )
, hh.pre( hh( 'code class="prettyprint lang-js"'
, [
"parallel_appfun = tfun",
" .declIn( { _count : '0', _inw_t_begin : 'Date.now()' } )",
" .map( '.p' )",
" .filter( '!=null' )",
" .redinit( '0', '_count++, out+v' )",
" .next( '{ sum : current, count : _count, max_inw_dur_ms : Date.now() - _inw_t_begin }' )",
";"
].join( '\n' )
))
, hh.p([ '...on arrays of data with increasing sizes.' ])
, hh.p([ 'As of February 2016, most of the time is spent in communication overhead - directly proportional to the array size. ' ])
, hh.p([ ' In the future, big *numerical* data could be passed with SharedArrayBuffer:' ])
, hh.p([ hh( 'a href="https://blog.mozilla.org/javascript/2015/02/26/the-path-to-parallel-javascript/"'
, 'https://blog.mozilla.org/javascript/2015/02/26/the-path-to-parallel-javascript/' )
])
, hh.p([ hh( 'a href="https://www.chromestatus.com/feature/4570991992766464"'
, 'https://www.chromestatus.com/feature/4570991992766464' )
])
, hh.p([ hh( 'a href="https://gist.github.com/dherman/5463054"'
, 'https://gist.github.com/dherman/5463054'
)])
, hh.p([ hh( 'a href="https://code.google.com/p/chromium/issues/detail?id=497295"'
, 'https://code.google.com/p/chromium/issues/detail?id=497295'
)])
, hh.p([ hh( 'a href="https://bugs.chromium.org/p/v8/issues/detail?id=4614"'
, 'https://bugs.chromium.org/p/v8/issues/detail?id=4614'
)])
, hh.p([ hh( 'a href="https://code.google.com/p/chromium/issues/detail?id=569681"'
, 'https://code.google.com/p/chromium/issues/detail?id=569681'
)])
, hh.p([
'For now (February 2016) it might be reasonable to restrict the use of web workers to '
, ' CPU-intensive tasks that require little data, e.g. an intensive search '
, 'of a solution in a large space of possibilities. Or split the data and pass it '
, 'to the corresponding workers using '
, hh( 'a href="https://developer.mozilla.org/en-US/docs/Web/API/Transferable"'
, 'Transferables' )
, '.'
])
, hh.p([
'So this example here is currently a *bad* usage example, but at the same time a good way to measure the communication overhead with Web Workers.'
])
, hh.p([
'March 2016: Reduced the serialization overhead a lot (10-15 times) '
, ' using ', hh( 'code class="prettyprint lang-js"', 'JSON.stringify' )
, ' and ', hh( 'code class="prettyprint lang-js"', 'JSON.parse' )
, '. Still not fast enough to make parallel processing of complex objects interesting - i.e. objects other than Transferables/TypedArrays. '
])
, hh( 'button id ="parallel-speed-test-start" disabled="disabled"', 'Waiting for async unit tests to complete...' )
, hh( 'div id="pspt-out-cont" style="display: none;"'
, hh.pre( hh( 'code id="parallel-speed-test-useragent"', navigator.userAgent ) ) +
hh.pre( hh( 'code id="parallel-speed-test-result"', ' ' ) )
)
, hh.hr()
, section_title_with_anchor( 'example-parallel-speed-test-result', 'Parallel speed test: Example results' )
, hh( 'div id="epstr-data-cont"'
, hh.pre( hh( 'code class="prettyprint lang-js"', [
'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/48.0.2564.116 Chrome/48.0.2564.116 Safari/537.36\n\n',
JSON.stringify( [
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"ops_per_sec": 250,
"max_inw_dur_ms": 0,
"overhead_dur_ms": 4
},
{
"n_worker": 2,
"data_len": 1,
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"max_inw_dur_ms": 0,
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},
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]
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}
]
}
]
, null, 2)
])))
, hh( 'hr id="unit-test-hr"' )
, section_title_with_anchor( 'unit-test', 'Unit tests' )
, hh.pre( hh( 'code id="unit-test-code" class="prettyprint lang-js"', ' ' ) )
, hh( 'hr id="async-unit-test-hr"' )
, section_title_with_anchor( 'async-unit-test', 'Parallel web workers unit tests' )
, hh.pre( hh( 'code id="async-unit-test-code" class="prettyprint lang-js"', '(should start soon)' ) )
, hh.hr()
, section_title_with_anchor( 'license' , 'License' )
// object did not have a stable CSS formatting (scrollbar randomly showing up)
, hh( 'iframe name="license" type="text/plain" data="LICENSE" src="LICENSE" class="license"' )
].join( '\n' )
);
gEBI( 'contents' ).innerHTML = hh.ul( st_arr.map( function ( o ) {
return hh.li( hh( 'a href="#' + o.id + '"', o.text ) +
(o.id === 'unit-test' ? ' (' + hh( 'span id="result"' ) + ')'
: o.id === 'async-unit-test' ? ' (' + hh( 'span id="async-result"', 'should start soon' ) + ') '
: '')
);
}).join( '\n' ) );
function section_title_with_anchor( id, text )
{
if (id)
st_arr.push( { id : id, text : text } );
return hh( 'h3 id="' + id + '"'
, text + ' ' +
(!id ? '' : hh( 'span class="section-anchor"', '(' + hh( 'a href="#' + id + '"', '#' ) + ')' ))
)
}
})();
</script>
<pre id="estr-data" style="display: none"><code>-----
Chrome 47: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36
[transfun_redinit] speed: 31480 ops/sec –––––––––––––––––––––––––––––––
[transfun_reduce] speed: 30591 ops/sec –––––––––––––––––––––––––––––––
[1loop] speed: 31225 ops/sec –––––––––––––––––––––––––––––––
[3loops] speed: 11155 ops/sec –––––––––––
[native] speed: 410 ops/sec –
[transfun_redinit] speed: 31167 ops/sec –––––––––––––––––––––––––––––––
[transfun_reduce] speed: 30647 ops/sec –––––––––––––––––––––––––––––––
[1loop] speed: 31485 ops/sec –––––––––––––––––––––––––––––––
[3loops] speed: 10874 ops/sec –––––––––––
[native] speed: 410 ops/sec –
-----
Firefox 43: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
[transfun_redinit] speed: 51274 ops/sec –––––––––––––––––––––––––––––––––––––––––––––––––––
[transfun_reduce] speed: 39471 ops/sec –––––––––––––––––––––––––––––––––––––––
[1loop] speed: 53757 ops/sec ––––––––––––––––––––––––––––––––––––––––––––––––––––––
[3loops] speed: 6674 ops/sec –––––––
[native] speed: 2655 ops/sec –––
[transfun_redinit] speed: 44043 ops/sec ––––––––––––––––––––––––––––––––––––––––––––
[transfun_reduce] speed: 33099 ops/sec –––––––––––––––––––––––––––––––––
[1loop] speed: 42010 ops/sec ––––––––––––––––––––––––––––––––––––––––––
[3loops] speed: 7066 ops/sec –––––––
[native] speed: 2323 ops/sec ––
-----
Internet Explorer 11: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; InfoPath.3; .NET4.0E; rv:11.0) like Gecko
[transfun_redinit] speed: 35656 ops/sec ––––––––––––––––––––––––––––––––––––
[transfun_reduce] speed: 26930 ops/sec –––––––––––––––––––––––––––
[1loop] speed: 33166 ops/sec –––––––––––––––––––––––––––––––––
[3loops] speed: 4716 ops/sec –––––
[native] speed: 1651 ops/sec ––
[transfun_redinit] speed: 35234 ops/sec –––––––––––––––––––––––––––––––––––
[transfun_reduce] speed: 26764 ops/sec –––––––––––––––––––––––––––
[1loop] speed: 32703 ops/sec –––––––––––––––––––––––––––––––––
[3loops] speed: 4733 ops/sec –––––
[native] speed: 1649 ops/sec ––
</code></pre>
<script type="text/javascript">
(function () {
var dataNode = gEBI( 'estr-data' );
gEBI( 'estr-data-cont' ).appendChild( dataNode );
dataNode.style.display = '';
})();
</script>
<script type="text/javascript">
(function () {
var success = false
, printed = false
;
setTimeout( print_result, 0 ); // in case of failure
test();
success = true;
print_result();
print_test_detail();
print_gen_code_expl();
setup_speed_test();
function print_result()
{
if (!printed)
{
printed = true;
gEBI( 'result' ).innerHTML = success ? 'success' : 'failure';
}
}
function print_test_detail()
{
gEBI( 'unit-test-code' ).textContent = test;
}
function print_gen_code_expl()
{
var f = tfun.map( function (v) {
var dashes = tval( v )(
tfun
.split( '"\\n"' )
.redinit( '""'
, 'out.length > v.length ? out : v'
)
.next( '.replace( /[\\s\\S]/g, "-" )' )
)
;
return dashes + "\n" + v + '\n' + dashes + '\n' +
(new Function('return ' + v)()) + '\n'
})
.join( '"\\n\\n"' )
.next( '.replace( /</g, "<" )' )
;
gEBI( 'gen-code-expl-code' ).innerHTML = f(
[
"tfun.sorted('a-b')"
, "tfun.sorted( 'a[0]<b[0] ? -1 : +1' )"
, "tfun.map( '.p' ).filter( '!=null' ).redinit( '0', '+' )"
, "tfun.arg('a,b,c').next('a+b*c')"
, "tfun.range()"
, "tfun.rangeOf( 'a', 'b' )"
, "tfun.arg( 'arr,begin,end' ).rangeOf( 'begin', 'end' ).filter( 'v in arr' ).map( 'arr[ v ]' )"
, "tfun.split( '\"&\"' ).filter( '' ).map( '.split(\"=\")').filter( 'v[0]!=\"xyz\"' ).map( '.join(\"=\")' ).join( '\"&\"')"
, "tfun.split( '\"&\"' ).filter( '.split(\"=\")[0]!=\"xyz\"' ).join( '\"&\"')"
, "tfun.split( '\"&\"' ).filter( '!/^xyz=/.test(v)' ).join( '\"&\"')"
, "tfun.map( 'Math.log(v)' ).sum().next( 'Math.exp(current/n)' )"
, "tfun.decl( '_count', '0' ).filter( '!=null' ).map( '.age' ).redinit( '0', '_count++, out+v' ).next( '/_count' )"
, "tval( 'abcd\\nefghijkl\\nmnop' )( tfun.split( '\"\\\\n\"' ).redinit( '\"\"', 'out.length > v.length ? out : v' ).next( '.replace( /[\\\\s\\\\S]/g, \"*\" )' ) )"
, "tfun.split( '\"\\\\n\"' ).redinit( '\"\"', 'out.length > v.length ? out : v' ).next( '.replace( /[\\\\s\\\\S]/g, \"*\" )' )"
, "tfun.declIn({target : 'current[current.length-1]'\n , delta : '0'\n })\n .filterRight( '(delta = v - target)' +\n ',(-1 < delta && delta <= 0 ? (target--,true) : false)'\n )"
, "tfun.declIn({target : 'current[current.length-1]'\n , delta : '0'\n })\n .filterRight( '(delta = v - target)' +\n ',(-1 < delta && delta <= 0 ? (target--,true) : false)'\n )\n .breakWhenRight( 'delta <= -1' ) // optimization assuming sorted array"
, "JSON.stringify( tval( [ { a: 1, b : 2 }, { a: 500, b : 600 }, { a : 30, b : 40 } ] )\n ( tfun.declIn( { _a : '0', _b : '0' } ).each( '_a += v.a, _b += v.b' ).next( '{ a : _a, b : _b }' ) )\n, null\n, 2 )"
, "tfun.declIn( { _a : '0', _b : '0' } ).each( '_a += v.a, _b += v.b' ).next( '{ a : _a, b : _b }' )"
, "JSON.stringify( tval( [ { a: 1, b : 2 }, { a: 500, b : 600 }, { a : 30, b : 40 } ] )( tfun.reduce( '{ a : out.a + v.a, b : out.b + v.b }' ) ), null, 2)"
, "tfun.reduce( '{ a : out.a + v.a, b : out.b + v.b }' )"
, "JSON.stringify( [ { a: 1, b : 2 }, { a: 500, b : 600 }, { a : 30, b : 40 } ].reduce( function (a,b) { return tval.call( a, b )( tfun.mapIn( 'v+this[k]' ) ); } ), null, 2)"
, "tfun.mapIn( 'v+this[k]' ).getBodyCode() // xxx think about zip-like stuff and/or loop-in-loop... or not"
, "'some/string*\"@cha\xEEne$de_caract\xE8res'.replace( /\\W/g, '-' )"
, "tval( 'some/string*\"@cha\xEEne$de_caract\xE8res' )( tfun.split( '\"\"' ).map( 'v.match(/\\\\w/) ? v : \"-\"' ).join( '\"\"' ) )"
, "tval( 'some/string*\"@cha\xEEne$de_caract\xE8res' )( tfun.split( '\"\"' ).each( 'if (!/\\\\w/.test(v)) current[k] = \"-\"' ).join( '\"\"' ) )"
, "tval( 'some/string*\"@cha\xEEne$de_caract\xE8res' )( tfun.split( '\"\"' ).each( { 'if' : '!/\\\\w/.test(v)', then : 'current[k] = \"-\"' } ).join( '\"\"' ) )"
, "tval( 'some/string*\"@cha\xEEne$de_caract\xE8res' )( tfun.split( '\"\"' ).each( { 'if' : '!/\\\\w/.test(v)', then : { set_at : [ 'current', 'k', '\"-\"' ] } } ).join( '\"\"' ) )"
, "tval( 'abc=123&xyz=456&def=qq' )( tfun.split( '\"&\"' ).filter( '' ).map( '.split(\"=\")').filter( 'v[0]!=\"xyz\"' ).map( '.join(\"=\")' ).join( '\"&\"') )"
, "tval( 'abc=123&xyz=456&def=qq' )( tfun.split( '\"&\"' ).filter( '.split(\"=\")[0]!=\"xyz\"' ).join( '\"&\"') )"
, "tval( 'abc=123&xyz=456&def=qq' )( tfun.split( '\"&\"' ).filter( '!/^xyz=/.test(v)' ).join( '\"&\"') )"
, "'abc=123&xyz=456&def=qq'.replace( /(?:^|&)xyz=[^&]*/g, '' )"
, "tfun.split( '\"\"' ).map( 'v.match(/\\\\w/) ? v : \"-\"' ).join( '\"\"' )"
, "tfun.split( '\"\"' ).each( 'if (!/\\\\w/.test(v)) current[k] = \"-\"' ).join( '\"\"' )"
, "tfun.split( '\"\"' ).each( { 'if' : '!/\\\\w/.test(v)', then : 'current[k] = \"-\"' } ).join( '\"\"' )"
, "tfun.split( '\"\"' ).each( { 'if' : '!/\\\\w/.test(v)', then : { set_at : [ 'current', 'k', '\"-\"' ] } } ).join( '\"\"' )"
]
);
}
function setup_speed_test()
{
var sst_btn = gEBI( 'speed-test-start' )
, orig_text = sst_btn.textContent
, test_data
, impl_transfun_reduce = new Function( 'return ' + code_impl_transfun_reduce )()
, impl_transfun_redinit = new Function( 'return ' + code_impl_transfun_redinit )()
;
aEL( sst_btn, 'click', speed_test_start );
sst_btn.style.display = '';
function speed_test_start()
{
sA( sst_btn, 'disabled', 'disabled' );
sst_btn.textContent = 'Running...';
var node = gEBI( 'speed-test-result' );
node.textContent = '\n' + node.textContent;
gEBI( 'spt-out-cont' ).style.display = '';
async_run( [
function ( notifyDone ) { test_data = create_pseudo_random_arr(); notifyDone(); }
, function ( notifyDone ) { run_test( test_data, '[native] ', impl_native, notifyDone ); }
, function ( notifyDone ) { run_test( test_data, '[3loops] ', impl_3loops, notifyDone ); }
, function ( notifyDone ) { run_test( test_data, '[1loop] ', impl_1loop, notifyDone ); }
, function ( notifyDone ) { run_test( test_data, '[transfun_reduce] ', impl_transfun_reduce, notifyDone ); }
, function ( notifyDone ) { run_test( test_data, '[transfun_redinit]', impl_transfun_redinit, notifyDone ); }
, speed_test_done
] );
}
function speed_test_done()
{
var node = gEBI( 'speed-test-result' );
node.innerHTML = node.innerHTML.replace( /speed:\s*(\d+)[^\(]*(\([^\)]*\))/g, replace_sanity_check_with_speed_bar );
sst_btn.textContent = orig_text;
sst_btn.removeAttribute( 'disabled' );
function replace_sanity_check_with_speed_bar( s, s_n, s_paren )
{
var n = Math.max( 1, Math.round( parseFloat( s_n ) / 1000 ) );
return s.replace( s_paren, tfun.map( '"–"' ).join( '""' )( Array.apply( null, new Array( n ) ) ) );
}
}
// --- Speed test details
function impl_native( arr )
{
return arr.map(function(x) { return x.p; })
.filter(function(x) { return x != null; })
.reduce(function(a, b) { return a + b; })
;
}
function impl_3loops( arr )
{
var n = arr.length;
// .map(".p")
var tmp_1 = new Array(n);
for (var i = 0; i < n; i++)
tmp_1[i] = arr[i].p;
// .filter("!=null")
var tmp_2 = [];
for (var i = 0; i < n; i++) {
var v = tmp_1[i];
if (v != null)
tmp_2.push(v);
}
// .reduce("+")
var sum = 0;
for (var n2 = tmp_2.length, i = 0; i < n2; i++)
sum = sum + tmp_2[i];
return sum;
}
function impl_1loop( arr )
{
var sum = 0,
n = arr.length;
for (var i = 0; i < n; i++) {
var v = arr[i];
v = v.p; // .map(".p")
if (v != null) // .filter("!=null")
sum = sum + v; // .reduce("+")
}
return sum;
}
}
// --- Tool functions
function run_test( test_data, name, impl, notifyDone )
{
var current_n = 1
, real_duration = null
, target_duration = 1000
;
var out = impl( test_data );
run_and_adjust();
function run_and_adjust()
{
var begin = Date.now();
for (var i = current_n; i--;)
impl( test_data );
real_duration = Date.now() - begin;
var ratio = real_duration / target_duration;
if (0.9 < ratio && ratio < 1.1)
{
run_test_done();
}
else if (ratio < 0.5)
{
// rough adjustment (typically at the beginnin)
current_n *= 2;
run_and_adjust();
}
else
{
// fine adjustment (typically at the end)
current_n = Math.round( current_n / ratio );
setTimeout( run_and_adjust, 357 );
}
}
function run_test_done()
{
var node = gEBI( 'speed-test-result' );
var speed = Math.round(1000 * current_n / real_duration)
, s_str = '' + speed
;
while (s_str.length < 6)
s_str = ' ' + s_str;
node.textContent = [
, name + ' speed: ' + s_str + ' ops/sec (sanity check: output value: ' + out + ')'
]
.join( '\n' )
+ node.textContent // reverse chronological order
;
notifyDone();
}
}
})();
function async_run( funarr )
{
if (funarr.length > 0)
setTimeout( async_next, 1234 ); // 1234: pause to let the browser breathe
function async_next()
{
funarr[ 0 ]( notifyDone ); // funarr[ 0 ] might be itself async -> pass it a callback
}
function notifyDone()
{
async_run( funarr.slice( 1 ) );
}
}
</script>
<script type="text/javascript">
// async unit tests (e.g. parallel web workers)
(function () {
var detailnode = gEBI( 'async-unit-test-code' )
, outnode = gEBI( 'async-result' )
;
async_run_test( detailnode, outnode );
})();
</script>
<script type="text/javascript">
// parallel speed test
(function () {
after_async( setup_parallel_speed_test );
function setup_parallel_speed_test()
{
var psst_btn = gEBI( 'parallel-speed-test-start' )
, orig_text = psst_btn.textContent
;
aEL( psst_btn, 'click', parallel_speed_test_start );
psst_btn.innerHTML = 'Run it!';
rA( psst_btn, 'disabled' );
psst_btn.style.display = '';
var n_worker_max, speed_result_arr;
function parallel_speed_test_start()
{
sA( psst_btn, 'disabled', 'disabled' );
psst_btn.textContent = 'Running...';
var node = gEBI( 'parallel-speed-test-result' );
node.textContent = '\n' + node.textContent;
gEBI( 'pspt-out-cont' ).style.display = '';
speed_result_arr = [];
async_run( [
chose_n_worker_max
, loop_through_test_array_sizes
, parallel_speed_test_done
] );
}
function chose_n_worker_max( notifyDone )
{
var n_cores = navigator.hardwareConcurrency || 8; // xxx
n_worker_max = n_cores - 1;
notifyDone();
}
var parallel_appfun, merge_fun;
var size, test_data, correct_result, one_speed_result;
function loop_through_test_array_sizes( notifyDone )
{
var array_sizes = [ 1, 10, 100, 1e3, 1e4, 1e5, 1e6 ]
, max_array_size = Math.max.apply( Math, array_sizes )
, max_test_data = create_pseudo_random_arr( max_array_size )
;
parallel_appfun = tfun
.declIn( { _count : '0', _inw_t_begin : 'Date.now()' } )
.map( '.p' )
.filter( '!=null' )
.redinit( '0', '_count++, out+v' )
.next( '{ sum : current, count : _count, max_inw_dur_ms : Date.now() - _inw_t_begin }' )
merge_fun = function ( a, b )
{
return {
sum : a.sum + b.sum
, count : a.count + b.count
, max_inw_dur_ms : Math.max( a.max_inw_dur_ms, b.max_inw_dur_ms )
};
};
next_size();
// --- Details
function next_size()
{
setTimeout( next_size_impl, 1000 ); // Let the browser breathe..
}
function next_size_impl()
{
if (!array_sizes.length)
{
notifyDone();
}
else
{
size = array_sizes.shift();
test_data = max_test_data.slice( 0, size );
loop_through_n_worker( next_size );
}
}
}
function loop_through_n_worker( notifyDone )
{
var n = 0;
// First n=0: in the main process
var t_begin = Date.now()
, tmp = tval( test_data )( parallel_appfun )
, t_end = Date.now()
;
tmp = with_mean( tmp );
correct_result = { sum : tmp.sum, count : tmp.count, mean : tmp.mean };
var dur_ms = t_end - t_begin
, nw2speed = [
get_speed_obj( n, test_data.length, dur_ms )
]
;
// Now with parallel processes
speed_test_next_n_worker();
// --- Details (function declarations)
function with_mean( o )
{
var sum = tmp.sum
, count = tmp.count
;
sum .toPrecision.call.a;
count.toPrecision.call.a;
sum >= 0 || null.bug;
count >= 0 || null.bug;
var ret = Object.create( o );
ret.mean = sum / count;
return ret;
}
function get_speed_obj( n_worker, data_len, dur_ms )
{
return {
n_worker : n_worker
, data_len : data_len
, dur_ms : dur_ms
, ops_per_sec : 1000 / dur_ms
};
}
function speed_test_next_n_worker()
{
setTimeout( speed_test_next_n_worker_impl, 1234 ); // Let the browser breathe
}
function speed_test_next_n_worker_impl()
{
if (!(n < n_worker_max))
{
speed_result_arr.push({
size : size
, nw2speed : nw2speed
});
notifyDone();
}
else
{
n++;
var t_begin = Date.now()
, tmp = psplit( parallel_appfun, { n : n } )
.pmerge( merge_fun)
.next( with_mean )
.runOn( test_data )
.then( receive_result )
;
function receive_result( r )
{
var t_end = Date.now()
, dur_ms = t_end - t_begin
, max_inw_dur_ms = r.max_inw_dur_ms
;
max_inw_dur_ms.toPrecision.call.a;
oEquals( correct_result, { sum : r.sum, count : r.count, mean : r.mean } ) || null.bug;
nw2speed[ n ] = get_speed_obj( n, test_data.length, dur_ms );
nw2speed[ n ].max_inw_dur_ms = max_inw_dur_ms;
nw2speed[ n ].overhead_dur_ms = dur_ms - max_inw_dur_ms;
speed_test_next_n_worker();
}
}
}
}
function parallel_speed_test_done()
{
console.log('parallel_speed_test_done', speed_result_arr);
var node = gEBI( 'parallel-speed-test-result' );
node.innerHTML += '\n' + JSON.stringify( speed_result_arr, null, 2 );
psst_btn.textContent = orig_text;
psst_btn.removeAttribute( 'disabled' );
}
}