Hi all:<div>    I want to implement a simple function into GMX4.5. I need to get the atoms&#39; coordinates which is not on this nodes, but I know those atoms globle index. Just like the below situation.</div><hr style="color:rgb(79,107,114);font-family:arial,verdana,helvetica;font-size:12px;line-height:18px;background-color:rgb(255,255,255)">
<p style="margin:0.5em 0px;padding:0px;color:rgb(79,107,114);font-family:arial,verdana,helvetica;font-size:12px;line-height:18px;background-color:rgb(255,255,255)"><code style="font-family:&#39;Lucida Console&#39;,Courier,monospace;font-size:14px;color:rgb(0,52,113)"></code></p>
<pre style="margin-top:0.5em;margin-bottom:0.5em;margin-left:1em;padding:0px 0px 0px 1em;border-left-width:4px;border-left-style:solid;border-left-color:rgb(170,170,170);background-color:rgb(254,254,254);overflow:visible;line-height:18px">
<span style="font-size:12px;color:rgb(119,119,119)">int cell_id=<a title="Developer_Zone/Programming_Guide/Data_Structures#t_commrec" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#t_commrec" style="color:rgb(51,102,204);text-decoration:none">cr</a>-&gt;<a title="Developer_Zone/Programming_Guide/Data_Structures#gmx_domdec_t" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#gmx_domdec_t" style="color:rgb(51,102,204);text-decoration:none">dd</a>-&gt;<a title="Developer_Zone/Programming_Guide/Data_Structures#gmx_ga2la_t" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#gmx_ga2la_t" style="color:rgb(51,102,204);text-decoration:none">ga2la</a>[global_index].cell;
int local_index=<a title="Developer_Zone/Programming_Guide/Data_Structures#t_commrec" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#t_commrec" style="color:rgb(51,102,204);text-decoration:none">cr</a>-&gt;<a title="Developer_Zone/Programming_Guide/Data Structures#gmx_domdec_t" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#gmx_domdec_t" style="color:rgb(51,102,204);text-decoration:none">dd</a>-&gt;<a title="Developer_Zone/Programming_Guide/Data_Structures#gmx_ga2la_t" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#gmx_ga2la_t" style="color:rgb(51,102,204);text-decoration:none">ga2la</a>[global_index].a;
if(0==cell_id)
{
 rvec* atom_position=&amp;<a title="Developer_Zone/Programming_Guide/Data_Structures#t_state" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#t_state" style="color:rgb(51,102,204);text-decoration:none">local_state</a>-&gt;<a title="Developer_Zone/Programming_Guide/Data_Structures#X" href="mks://localhost/Developer_Zone/Programming_Guide/Data_Structures#X" style="color:rgb(51,102,204);text-decoration:none">x</a>[local_index];
}
else
{
 <em>// atom is NOT on this node</em>
 // if atom is on a neighbor node then its position can be acquired using </span><font color="#ff0000" size="4">special communication </font></pre><div><span style="background-color:rgb(254,254,254);color:rgb(119,119,119);font-size:12px;line-height:18px">}</span></div>
<div><span style="background-color:rgb(254,254,254);color:rgb(119,119,119);font-size:12px;line-height:18px"><br></span></div><div><hr style="color:rgb(79,107,114);font-family:arial,verdana,helvetica;font-size:12px;line-height:18px;background-color:rgb(255,255,255)">
<br></div><div><span style="background-color:rgb(254,254,254);color:rgb(119,119,119);font-size:12px;line-height:18px"><br></span></div><div>  What&#39;s the special communication? Could you give me a help to tell me which function in GMX  can do this <span style="background-color:rgb(254,254,254);line-height:18px"><font color="#ff0000">special communication</font></span><span style="color:rgb(255,0,0);font-size:large;background-color:rgb(254,254,254);line-height:18px"> </span>?</div>
<div><br></div><div> Thank you very much!</div><div><br></div><div>Best wishes<br clear="all"><div><br></div>-- <br><span><font color="#888888">Yukun Wang <br>PhD candidate<br><span style="text-align:center">Institute of Natural Sciences &amp;&amp; College of Life Science, Shanghai Jiao Tong University</span><br>
Cell phone: 13621806236.<br>China Shanghai</font></span>
</div>