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    Hi,<br>
    <br>
    That suggets it's related to the new merge-on-the-fly-code and not
    the pbc handling.<br>
    <br>
    And it's me, not Justin, who's fixing and probably creating the
    bugs. :-)<br>
    <br>
    Cheers,<br>
    <br>
    Erik<br>
    &nbsp;<br>
    Zuzana Benkova skrev 2011-02-16 19.58:
    <blockquote cite="mid:fb8f45c2d64.4d5c2c62@savba.sk" type="cite">
      <div style="font-family: 'Times New Roman'; font-size: 16px;">Dear
        Justin, <br>
        <br>
        maybe following information helps you. When I evaluated the
        number of hydrogen bonds between two different groups,
        particularly, water and frozen atoms of the siloxane surface I
        got the same results with both version of GROMACS, 4.0.3 and
        4.5.2.<br>
        <br>
        Greetings<br>
        Zuzana<br>
        <br>
        <span>On 02/15/11, <b class="name">Zuzana Benkova </b>
          <a class="moz-txt-link-rfc2396E" href="mailto:Zuzana.Benkova@savba.sk">&lt;Zuzana.Benkova@savba.sk&gt;</a> wrote:</span>
        <blockquote cite="mid:fbb9328a580b.4d5a8576@savba.sk"
          class="iwcQuote" style="border-left: 1px solid rgb(0, 0, 255);
          padding-left: 13px; margin-left: 0pt;" type="cite">
          <div class="mimepart text html">
            <div style="font-family: 'Times New Roman'; font-size:
              16px;">Hello Justin, <br>
              <br>
              I was using cubic boxes. <br>
              <br>
              Greetings<br>
              Zuzana<br>
              <br>
              <span>On 02/15/11, <b class="name">Erik Marklund </b>
                <a class="moz-txt-link-rfc2396E" href="mailto:erikm@xray.bmc.uu.se">&lt;erikm@xray.bmc.uu.se&gt;</a> wrote:</span>
              <blockquote cite="mid:4D5A5969.5020703@xray.bmc.uu.se"
                class="iwcQuote" style="border-left: 1px solid rgb(0, 0,
                255); padding-left: 13px; margin-left: 0pt;" type="cite">
                <div class="mimepart text plain">Justin A. Lemkul skrev
                  2011-02-09 23.03:<br>
                  &gt;<br>
                  &gt;<br>
                  &gt;Zuzana Benkova wrote:<br>
                  &gt;&gt;Dear GROMACS users,<br>
                  &gt;&gt;<br>
                  &gt;&gt;I have used g_hbond of version 4.5.2 to
                  analyze number of hydrogen bonds in water. I got the
                  average&nbsp; number per time frame and number of water
                  oxygen atoms equal to 0.839. When I used g_hbond of
                  version 4.0.7 I got 1.677, which is twice the former
                  value. TIP3P model predicts over 3 hydrogen bonds per
                  one water molecule. I am a bit puzzled. If I multiply
                  the digit from version 4.0.7. by 2 I get the expected
                  number. That is why I supposed that the number of
                  1.677 means per one water oxygen and&nbsp; per one water
                  molecule means 2x1.677 since two water molecules
                  participate at one hydrogen bond.<br>
                  &gt;&gt;However, I do not know yet if my
                  interpretation is correct and how to interpret the
                  number obtained by version 4.5.2.<br>
                  &gt;&gt;I would appreciate any help. Thank you in
                  advance.<br>
                  &gt;&gt;<br>
                  &gt;<br>
                  &gt;Try pulling the latest stable development
                  version.&nbsp; This issue was reported in 4.5.1:<br>
                  &gt;<br>
                  &gt;<a moz-do-not-send="true"
href="http://lists.gromacs.org/pipermail/gmx-users/2010-October/054905.html"
                    target="_blank">http://lists.gromacs.org/pipermail/gmx-users/2010-October/054905.html</a><br>
                  &gt;<br>
                  &gt;but not fixed until after 4.5.3 was released:<br>
                  &gt;<br>
                  &gt;<a moz-do-not-send="true"
href="http://lists.gromacs.org/pipermail/gmx-users/2010-December/056406.html"
                    target="_blank">http://lists.gromacs.org/pipermail/gmx-users/2010-December/056406.html</a><br>
                  &gt;<br>
                  &gt;-Justin<br>
                  &gt;<br>
                  &gt;&gt;Greetings<br>
                  &gt;&gt;Zuzana<br>
                  &gt;&gt;<br>
                  &gt;<br>
                  Are people who are reporting this error using a
                  triclinic boxes or cuboid boxes. That information may
                  help my bugfixing.<br>
                  <br>
                  -- <br>
                  -----------------------------------------------<br>
                  Erik Marklund, PhD student<br>
                  Dept. of Cell and Molecular Biology, Uppsala
                  University.<br>
                  Husargatan 3, Box 596,&nbsp;&nbsp;&nbsp; 75124 Uppsala, Sweden<br>
                  phone:&nbsp;&nbsp;&nbsp; +46 18 471 4537&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fax: +46 18 511 755<br>
                  <a class="moz-txt-link-abbreviated" href="mailto:erikm@xray.bmc.uu.se">erikm@xray.bmc.uu.se</a>&nbsp;&nbsp;&nbsp; <a moz-do-not-send="true"
                    href="http://folding.bmc.uu.se/" target="_blank">http://folding.bmc.uu.se/</a><br>
                  <br>
                  -- <br>
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                </div>
              </blockquote>
            </div>
          </div>
        </blockquote>
      </div>
    </blockquote>
    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
-----------------------------------------------
Erik Marklund, PhD student
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,    75124 Uppsala, Sweden
phone:    +46 18 471 4537        fax: +46 18 511 755
<a class="moz-txt-link-abbreviated" href="mailto:erikm@xray.bmc.uu.se">erikm@xray.bmc.uu.se</a>    <a class="moz-txt-link-freetext" href="http://folding.bmc.uu.se/">http://folding.bmc.uu.se/</a>
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