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    On 30/04/2012 6:34 PM, Steven Neumann wrote:
    <blockquote
cite="mid:CAKZJqQF3opsSjJjgXByuj_iy0E5c0X_+-TXHyT8poDpWK4_9ag@mail.gmail.com"
      type="cite"><br>
      <br>
      <div class="gmail_quote">On Fri, Apr 27, 2012 at 5:13 PM, Justin
        A. Lemkul <span dir="ltr">&lt;<a moz-do-not-send="true"
            href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;</span>
        wrote:<br>
        <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px
          0.8ex;PADDING-LEFT:1ex" class="gmail_quote">
          <div class="im"><br>
            <br>
            On 4/27/12 12:09 PM, Steven Neumann wrote:<br>
          </div>
          <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px
            0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote">
            <div class="im"><br>
              <br>
              On Fri, Apr 27, 2012 at 4:38 PM, Justin A. Lemkul &lt;<a
                moz-do-not-send="true" href="mailto:jalemkul@vt.edu"
                target="_blank">jalemkul@vt.edu</a><br>
            </div>
            <div class="im">&lt;mailto:<a moz-do-not-send="true"
                href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;&gt;
              wrote:<br>
              <br>
              <br>
              <br>
              &nbsp; &nbsp;On 4/27/12 11:34 AM, Steven Neumann wrote:<br>
              <br>
              <br>
              <br>
              &nbsp; &nbsp; &nbsp; &nbsp;On Fri, Apr 27, 2012 at 4:28 PM, Justin A. Lemkul
              &lt;<a moz-do-not-send="true"
                href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a><br>
              &nbsp; &nbsp; &nbsp; &nbsp;&lt;mailto:<a moz-do-not-send="true"
                href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;<br>
            </div>
            <div>
              <div class="h5">&nbsp; &nbsp; &nbsp; &nbsp;&lt;mailto:<a
                  moz-do-not-send="true" href="mailto:jalemkul@vt.edu"
                  target="_blank">jalemkul@vt.edu</a> &lt;mailto:<a
                  moz-do-not-send="true" href="mailto:jalemkul@vt.edu"
                  target="_blank">jalemkul@vt.edu</a>&gt;&gt;&gt; wrote:<br>
                <br>
                <br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;On 4/27/12 11:22 AM, Steven Neumann wrote:<br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Dear Gmx Users,<br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;I am running 2 us simulation in implicit
                solvent model:<br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;define &nbsp; &nbsp; &nbsp; &nbsp;= -DPOSRES<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;integrator &nbsp; &nbsp;= sd &nbsp; &nbsp; &nbsp; &nbsp;; leap-frog
                integrator<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;nsteps &nbsp; &nbsp; &nbsp; &nbsp;= 500000000 &nbsp; &nbsp; ; 0.004 *
                500000000= 2 us<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;dt &nbsp; &nbsp; &nbsp; &nbsp;= 0.004 &nbsp; &nbsp; &nbsp; &nbsp; ; 4 fs<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;; Output control<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;nstxout &nbsp; &nbsp; &nbsp; = 0<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;nstxtcout &nbsp; &nbsp;= 50000 &nbsp; &nbsp; &nbsp; &nbsp;; xtc
                compressed trajectory output<br>
                &nbsp; &nbsp; &nbsp; &nbsp;every 2 ps<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;nstenergy &nbsp; &nbsp;= 10000 &nbsp; &nbsp; &nbsp;; save energies
                every 2 ps<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;nstlog &nbsp; &nbsp; &nbsp; &nbsp;= 10000 &nbsp; &nbsp; ; update log
                file every 2 ps<br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;How come my trajectory (trr) is being
                created and takes 80 GB?<br>
                <br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;The default for nstvout is 100, so you're
                likely getting very frequent<br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;output of velocities into the .trr file.<br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;-Justin<br>
                <br>
                &nbsp; &nbsp; &nbsp; &nbsp;Thank you<br>
                &nbsp; &nbsp; &nbsp; &nbsp;This job crashed due to the quota exceeded. If
                change my mdp file (with<br>
                &nbsp; &nbsp; &nbsp; &nbsp;additional nstvout=0) &nbsp;using tpbconv and run it
                from the checkpoint file it<br>
                &nbsp; &nbsp; &nbsp; &nbsp;should work then with no trr file?<br>
                <br>
                <br>
                &nbsp; &nbsp;If you need to change the .mdp file, you can't use
                tpbconv; use grompp to<br>
                &nbsp; &nbsp;generate a new .tpr file and submit the new job.<br>
                <br>
                <br>
                So if I will create new mdp file (with additional
                nstvout=0 to get rid of trr<br>
                files) and use:<br>
                <br>
                mdrun -s new.tpr -cpi last.cpt<br>
                <br>
                Will I continue from the checkpoint?<br>
                <br>
              </div>
            </div>
          </blockquote>
          <br>
          That's the question I posed below...
          <div class="im"><br>
            <br>
            <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px
              0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote">&nbsp; &nbsp; &nbsp;I'm
              not sure if you can pick up using mdrun -cpi if the
              settings have<br>
              &nbsp; &nbsp;changed, but you can try.<br>
              <br>
              <br>
              Yes you can, from 4.0 you do not have to specify -append
              just -cpi file if the<br>
              job crashed.<br>
              <br>
            </blockquote>
            <br>
          </div>
          I am aware of checkpointing, but what I'm not sure of is if
          you change output options (or others) mid-stream, if the
          checkpointing mechanism will complain, particularly due to the
          changes in the .trr content. &nbsp;You'll have to try and see.
          <div class="HOEnZb">
            <div class="h5"><br>
              <br>
              -Justin<br>
            </div>
          </div>
        </blockquote>
        <div>&nbsp;</div>
        <div>&nbsp;</div>
        <div>Indeed, it complains in terms of not present trr file (3
          out of 4 files present) and he does not want to carry on. But
          when I change name of the output it starts from the
          checkpoint&nbsp; generating new files. </div>
      </div>
    </blockquote>
    <br>
    Yes, that will be the effect of the (default) mdrun -append yes in
    4.5<br>
    <br>
    <blockquote
cite="mid:CAKZJqQF3opsSjJjgXByuj_iy0E5c0X_+-TXHyT8poDpWK4_9ag@mail.gmail.com"
      type="cite">
      <div class="gmail_quote">
        <div>Can I then somehow connect those two xtc trajectories using
          trjconv?</div>
      </div>
    </blockquote>
    <br>
    Yes, or better trjcat. Be sure to read and understand their -h
    output first.<br>
    <br>
    <blockquote
cite="mid:CAKZJqQF3opsSjJjgXByuj_iy0E5c0X_+-TXHyT8poDpWK4_9ag@mail.gmail.com"
      type="cite">
      <div class="gmail_quote">
        <div> Which tpr file I should use?</div>
      </div>
    </blockquote>
    <br>
    You don't even need a .tpr file to concatenate trajectory files.<br>
    <br>
    Mark<br>
    <blockquote
cite="mid:CAKZJqQF3opsSjJjgXByuj_iy0E5c0X_+-TXHyT8poDpWK4_9ag@mail.gmail.com"
      type="cite">
      <div class="gmail_quote">
        <div>&nbsp;</div>
        <div>Steven</div>
        <div>&nbsp;</div>
        <div>&nbsp;</div>
        <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px
          0.8ex;PADDING-LEFT:1ex" class="gmail_quote">
          <div class="HOEnZb">
            <div class="h5"><br>
              -- <br>
              ========================================<br>
              <br>
              Justin A. Lemkul<br>
              Ph.D. Candidate<br>
              ICTAS Doctoral Scholar<br>
              MILES-IGERT Trainee<br>
              Department of Biochemistry<br>
              Virginia Tech<br>
              Blacksburg, VA<br>
              jalemkul[at]<a moz-do-not-send="true"
                href="http://vt.edu/" target="_blank">vt.edu</a> | <a
                moz-do-not-send="true" href="tel:%28540%29%20231-9080"
                target="_blank" value="+15402319080">(540) 231-9080</a><br>
              <a moz-do-not-send="true"
                href="http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin"
                target="_blank">http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin</a><br>
              <br>
              ========================================<br>
              -- <br>
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        </blockquote>
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