c - Sum of an array element using OpenMP -

-

i trying parallelize following nested "for loops" (in c) using openmp.

for (dt = 0; dt <= maxdt; dt++) {   (t0 = 0; t0 <= nframes-dt; t0++) {     (i=0; i<natoms; i++) {       vac[dt] = vac[dt] + dot_product(vect[t0][i],vect[t0+dt][i]) ;     }   } }

basically calculates auto-correlation function of time dependent vector (vect). need vac array final output using openmp.

i have tried using reduction sum approach of openmp perform this, adding following line above innermost loop (for (i=0; i<natoms; i++)).

#pragma omp parallel default(shared) private(i,axis) schedule(guided) reduction(+: vac[dt])

but not work, since reduction sum not work arrays. best , efficient way parallelize such codes? thanks.


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...
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...
Read more

javascript - How to Hide Date Menu from Datepicker in yii2 -

-
basically in datetimepicker widget date choose first time, how can hide date option widget , filter according time. tried not working want hide remove button [ 'attribute'=>'time', 'label'=>'time', 'format'=>'raw', 'value'=>function($data){ return date('h:i:s',strtotime($data->time)); }, 'filter'=> datetimepicker::widget([ 'model' => $searchmodel, 'attribute' => 'time', 'clientoptions' => [ 'autoclose' => true, 'format' => 'hh:ii', 'showon' =...
Read more