Hi Alon,
Module.calledRun is set true by doRun() simply if Module.setStatus does not
exist... This is the code em++ appends before post.js:
if (Module['setStatus']) {
Module['setStatus']('Running...');
setTimeout(function() {
setTimeout(function() {
Module['setStatus']('');
}, 1);
if (!ABORT) doRun();
}, 1);
} else {
doRun();
}
I compiled now with latest emscripten -O2 -g1, no asm.js error (ignore the
ones coming from gnuplot.js), but the performance bug after a reset
remains. :(
The new version is uploaded directly at
http://gaia.respawned.com
"Reset" simply calls gaia_create() again in the worker. Is there a way to
open a worker console in the inspector of FF? This is a pretty handy
feature in chrome...
Cheers,
C
On Wednesday, February 12, 2014 8:38:49 PM UTC+1, Alon Zakai wrote:
>
> Looking in src/postamble.js, calledRun is only set to true when actually
> running this code:
>
> ensureInitRuntime();
>
> preMain();
>
> if (Module['_main'] && shouldRunNow) {
> Module['callMain'](args);
> }
>
> postRun();
>
> so if you do not throw in any of those (you would see an exception), or do
> not define Module._main at a later time, this should work. (There is also
> shouldRunNow, which unless you defined INVOKE_RUN or
> Module['noInitialRun'], should not interfere here.) Hope that helps figure
> out that issue.
>
> Yes, for performance -O2 -g1 is needed.
>
> - Alon
>
>
>
> On Wed, Feb 12, 2014 at 7:22 AM, Chris <[email protected] <javascript:>>wrote:
>
>> Fixed, but it wasn't actually the problem. For some reason
>> Module.calledRun was true, so Module.run() did nothing. Setting it now
>> manually false before the run.
>> To the original problem: The -g1 version works now (index_alon.html),
>> without asm.js errors but is ~100 times slower. I guess this is no use in
>> determining why the speed loss occurred. Should I compile with -O2 and -g1 ?
>>
>> Thanks,
>> Christian
>>
>>
>>
>> On Tuesday, February 11, 2014 7:32:03 PM UTC+1, Alon Zakai wrote:
>>
>>> I believe FS.unlink is what does that.
>>>
>>> - Alon
>>>
>>>
>>>
>>> On Tue, Feb 11, 2014 at 12:55 AM, Christian H <[email protected]> wrote:
>>>
>>>> ...just noticed that chrome does complain about FS.deleteFile() not
>>>> found? How do I remove a file now?
>>>>
>>>> Cheers,
>>>> C
>>>>
>>>>
>>>> On Tue, Feb 11, 2014 at 9:50 AM, Christian H <[email protected]> wrote:
>>>>
>>>>> Hi Alon,
>>>>> I did recompile with the latest emscripten, the one I compiled with
>>>>> was not more than 2 months old. However, now I get nothing. I do see the
>>>>> asm.js warnings, but no reaction to Module.run(), also no error (even
>>>>> within worker triggering manually), the FS works, Module.print() works
>>>>> too.
>>>>> That happens to all versions I compiled with -O2 or -g1. I prepared a
>>>>> site
>>>>> loading the new (-g1) version:
>>>>>
>>>>> http://gaia.respawned.com/index_alon.html
>>>>>
>>>>> The bitcode is at
>>>>> http://gaia.respawned.com/GaiaE.o
>>>>>
>>>>> You don't need to wait that long, it will run until TS 1000. The
>>>>> performance line appears after TS 0.
>>>>>
>>>>> Thanks,
>>>>> Christian
>>>>>
>>>>>
>>>>> On Mon, Feb 10, 2014 at 10:17 PM, Alon Zakai <[email protected]>wrote:
>>>>>
>>>>>> Thanks. How long should this run? I waited until TS: 100 and it
>>>>>> still keeps going it seems.
>>>>>>
>>>>>> I see an asm.js validation error in the log, this could be related to
>>>>>> the performance problem. Was this compiled using latest emscripten? If
>>>>>> so,
>>>>>> can you make a whitespace-friendly build I could take a look at? emcc
>>>>>> -g1
>>>>>> will do that. (Even better is if you can provide the bitcode file, but
>>>>>> not
>>>>>> necessary.)
>>>>>>
>>>>>> - Alon
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Mon, Feb 10, 2014 at 11:13 AM, Chris <[email protected]> wrote:
>>>>>>
>>>>>>> Yes - you have to switch to the "Run"tab first. That is where the
>>>>>>> CFD sim task is controlled, the gnuplot tasks may/should suffer from
>>>>>>> the
>>>>>>> same problem.
>>>>>>> The GFlops output comes after the first time step.
>>>>>>>
>>>>>>> Cheers,
>>>>>>> C
>>>>>>>
>>>>>>>
>>>>>>> On Monday, February 10, 2014 7:21:07 PM UTC+1, Alon Zakai wrote:
>>>>>>>
>>>>>>>> Does it print out the GFlops somewhere?
>>>>>>>>
>>>>>>>> All I see is "Execution took", which went from 1.628 to 2.172 when
>>>>>>>> I reset.
>>>>>>>>
>>>>>>>> - Alon
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Mon, Feb 10, 2014 at 3:04 AM, Chris <[email protected]> wrote:
>>>>>>>>
>>>>>>>>> Hi all,
>>>>>>>>> I ported a fluid simulation C++ code (command line program) with
>>>>>>>>> emscripten and it works quite fantastic. I never thought JS could run
>>>>>>>>> that
>>>>>>>>> efficiently.
>>>>>>>>> However, to re-run my program I wrapped the compiled version in a
>>>>>>>>> function (with pre/post.js) to reset its state. That usually worked
>>>>>>>>> nice,
>>>>>>>>> but recently I get at first an awesome performance from FF (~0.3
>>>>>>>>> native
>>>>>>>>> speed!), but after a reset it suffers a drastic performance breakdown
>>>>>>>>> of a
>>>>>>>>> factor of 20.
>>>>>>>>>
>>>>>>>>> The site is http://gaia.respawned.com
>>>>>>>>>
>>>>>>>>> You can observe it just by clicking "Run" in the Run tab, the
>>>>>>>>> sparse matrix mul+add performance is measured thoroughly. At first
>>>>>>>>> run:
>>>>>>>>> Performance (mul+add): 0.377445 GFlops
>>>>>>>>>
>>>>>>>>> After "Reset" (calling gaia_create() again in the worker):
>>>>>>>>> Performance (mul+add): 0.0187213 GFlops
>>>>>>>>>
>>>>>>>>> On a recent Chrome I do not get a difference, always around 0.26
>>>>>>>>> GFlops.
>>>>>>>>>
>>>>>>>>> Thanks for your help,
>>>>>>>>> Christian
>>>>>>>>>
>>>>>>>>> PS: Native gcc -O3 : 1.17 GFlops.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
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