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phetsims / equality-explorer

"Equality Explorer" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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Verify that we don't run out of memory on iPad #136

Closed pixelzoom closed 6 years ago

pixelzoom commented 6 years ago

Related to https://github.com/phetsims/QA/issues/131 (dev test).

While working on https://github.com/phetsims/equality-explorer/issues/134, I experienced a lot of errors of the type "A problem occurred with this webpage so it was reloaded” from Safari Mobile on iPad2 (iOS 9.3.5). This is indicative of a memory issue, and occurred while running in requirejs mode, which requires a lot more memory than a built version. But over the past year or two, PhET has dramatically increased memory usage for sims, and this is a 5-screen sim, so we're more likely to hit the iPad memory ceiling. And this was also a problem for Area Model, which had a similar memory footprint.

This can be verified using Equality Explorer 1.0.0-dev.125.

@lmulhall-phet could you please handle this, or delegate?

ghost commented 6 years ago

Top priority is getting Katie up to speed and other QA issues, but I will try to squeeze it in this afternoon or tomorrow afternoon.

pixelzoom commented 6 years ago

In a Slack discussion, @phet-steele pointed out that the numbers in https://github.com/phetsims/equality-explorer/issues/64 "show that the sim gets close to the memory limit on iPad 2, but does not surpass it", so this issue is unnecessary. That seems reasonable, so closing.