c++ - Barnes-Hut and recursion limit -

-

i have implemented "barnes-hut" algorithm n-body simulator, , have run problem.

my program crash, memory related exceptions, stack overflow exception.

the thing makes strange error receive not occur @ fixed times, seems come out of blue. using task manager can see there no memory leak, , have been careful avoid this. though, use recursion, , objects in objects.

is possible need include maximum depth of oct-tree , causing error?

the maximal recursion depth indeed limited stack size.
stack size not same full ram memory size.
eg. on windows, default stack size (per thread) 1mb, nothing more.

it´s possible reconfigure program, and/or "catch" stack overflow error without whole program crashing (latter rather dirty, @ least possible).

nonetheless best solution modified code rid of recursion. recursions can replaced iterative solutions, bit more complicated. , data of each function call can moved vector etc. 1 entry per call, dynamic allocated vector memory can use whole ram.


Comments

Post a Comment

Popular posts from this blog

Android : Making Listview full screen -

-
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".mainactivity"> <edittext android:layout_margintop="5dp" android:layout_width="match_parent" android:layout_height="50dp" android:background="@drawable/location_edittext" android:id="@+id/locationeditext" android:textsize="15sp" android:textcolor="#999" android:paddingleft="15dp" /> <com.example.ravi_gupta.slider.viewpagercustomduration android:layout_width="wrap_content" android:layout_height="0dp" android:id="@+id/viewpager" android:scrollbarstyle="outsideoverlay" android:layout_weight="0.5&quo
Read more

javascript - Parse JSON from the body of the POST -

-
i'm using cameratag.com record video on website. service can send json response server can save data database. don't know how proceed here: the documentation states please note json repsonse passed in body of post , not form parameters. here example of how parse response in ruby: data = json.parse(request.raw_post) video_uuid = data["uuid"] but don't know how data on javascript. i'm not experienced in js please bare me :) post sample: { "uuid": "00012710-4b65-0131-ffe6-22000a499ea4", "camera_uuid": "98373a20-79ee-0130-3e42-1231390fcc11", "created_at": "2013-12-20t05:25:02.000z", "percent_complete": 100, "short_code": "kktb4q", "metadata": { }, "state": "published", "recorded_from": "http://singwho.com", "publish_type": null, "formats": [ { "name&qu
Read more

javascript - Chrome Extension: Interacting with iframe embedded within popup -

-
i writing chrome extension needs interact urls user not have open. therefore using hidden iframes embedded within popup, , attempting click button within iframe. however, receiving same origin policy error. know possible extension interact iframes of different domain via content scripts when iframe on tab user has open, not sure if possible use content scripts interact iframes directly in popup. here code: manifest.json "content_scripts": [ { "js": [ "bin/jquery.min.js", "interaction.js" ], "all_frames": true, "run_at": "document_start", "matches": [ "http://*/*", "https://*/*" ] }], "permissions": [ "activetab", "tabs", "http://*/", "https://*/" ], interaction.js $(document).ready(function() { $('div#iframes').append("<iframe id='shop' src=
Read more