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    On 29/12/2010 6:33 PM, delara aghaie wrote:
    <blockquote cite="mid:984797.79774.qm@web130110.mail.mud.yahoo.com"
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              <div>Dear Justin</div>
              <div>many thanks for your email and your comments.</div>
              <div>&nbsp;</div>
              <div>I found aminoacids.dat in the following pat</div>
              <div><br>
                <strong>/apps/gromacs/4.0.5/share/gromacs/top</strong></div>
              <div>I connect to imerial college via vpn. they have
                installed several gromacs versions.</div>
              <div>I only write</div>
              <div><strong>module load mpi</strong> and then</div>
              <div><strong>module load gromacs</strong></div>
              <div>and then the gromacs commands become active.</div>
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    <br>
    These module files should be setting your paths correctly. You
    should also be able to choose different GROMACS versions if such are
    installed. Please consult the documentation for how the site uses
    modules, or ask the sysadmins.<br>
    &nbsp;<br>
    <blockquote cite="mid:984797.79774.qm@web130110.mail.mud.yahoo.com"
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              <div>-------</div>
              <div>the g_msd_mpi command worked and now I have msd.xvg
                file and I plotted it using gnuplot with this command:</div>
              <div>gnuplot "msd.xvg" u 1:2 w l</div>
              <div>now pls let me know how can I save this plot? I have
                written about that but I am confused.</div>
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    <br>
    Note that this is a gnuplot question, not a GROMACS question. There
    are various ways to "save" a gnuplot plot, and the best approach
    varies with what you want to do next. Please have a look at some
    gnuplot tutorial or documentation material for information here.<br>
    <br>
    Mark<br>
    <br>
    <blockquote cite="mid:984797.79774.qm@web130110.mail.mud.yahoo.com"
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              <div>&nbsp;</div>
              <div>Thanks for your time</div>
              <div>Best regards</div>
              <div>Delara</div>
              <div><strong><br>
                </strong><br>
                <br>
                <br>
                --- On <b>Wed, 12/22/10, Justin A. Lemkul <i><a class="moz-txt-link-rfc2396E" href="mailto:jalemkul@vt.edu">&lt;jalemkul@vt.edu&gt;</a></i></b>
                wrote:<br>
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              <blockquote style="padding-left: 5px; margin-left: 5px;
                border-left: 2px solid rgb(16, 16, 255);"><br>
                From: Justin A. Lemkul <a class="moz-txt-link-rfc2396E" href="mailto:jalemkul@vt.edu">&lt;jalemkul@vt.edu&gt;</a><br>
                Subject: Re: [gmx-users] location of aminoacids.dat<br>
                To: "Gromacs Users' List" <a class="moz-txt-link-rfc2396E" href="mailto:gmx-users@gromacs.org">&lt;gmx-users@gromacs.org&gt;</a><br>
                Date: Wednesday, December 22, 2010, 5:00 PM<br>
                <br>
                <div class="plainMail"><br>
                  First, please start a new thread if you are asking a
                  new question.&nbsp; Hijacking an existing thread confuses
                  the archive and will likely get your question ignored
                  by anyone not interested in reading about Buckingham
                  potentials.&nbsp; I have changed the subject line
                  appropriately.<br>
                  <br>
                  See comments below.<br>
                  <br>
                  delara aghaie wrote:<br>
                  &gt; Dear Justin<br>
                  &gt; I hope all is well with you. I have faced a
                  problem. I connect to imperial college london from my
                  conunty to do the simulations. Today I faced an
                  strange problem.<br>
                  &gt; every command wich I want to use for ex:
                  g_msd_mpi or make_ndx_mpi<br>
                  &gt;&nbsp; I get this fatal error:<br>
                  &gt; *Fatal error:<br>
                  &gt; Library file aminoacids.dat not found in current
                  dir nor in default directories.<br>
                  &gt; (You can set the directories to search with the
                  GMXLIB path variable)*<br>
                  &gt;&nbsp; It is strange because my system is DPPC
                  monolayer and does not have nothing to do with
                  proteins !!!<br>
                  &gt;&nbsp; <br>
                  <br>
                  That doesn't matter.&nbsp; Certain input files are required
                  by certain Gromacs tools.&nbsp; In all likelihood, you
                  simply haven't set up your environment properly, but
                  I'm not sure how that's possible.<br>
                  <br>
                  What version of Gromacs are you using?&nbsp; How was it
                  installed?&nbsp; Are the Gromacs executables included in
                  your $PATH, or do you have to find them manually in
                  order to use them (i.e., do you run
                  /path/to/gromacs/bin/grompp or just grompp)?<br>
                  <br>
                  Also note that there is no value in compiling the
                  entire Gromacs suite with an MPI compiler.&nbsp; I've seen
                  that cause weird behavior before, but I doubt it's
                  necessarily related here.&nbsp; The only MPI-aware program
                  is mdrun.<br>
                  <br>
                  -Justin<br>
                  <br>
                  &gt; your help would be greatly appreciated/<br>
                  &gt; *Best regards*<br>
                  &gt; *Delara*<br>
                  &gt; *<br>
                  &gt; *<br>
                  &gt; <br>
                  &gt; --- On *Wed, 12/22/10, Justin A. Lemkul /&lt;<a
                    moz-do-not-send="true"
                    href="http://us.mc1301.mail.yahoo.com/mc/compose?to=jalemkul@vt.edu"
                    ymailto="mailto:jalemkul@vt.edu">jalemkul@vt.edu</a>&gt;/*
                  wrote:<br>
                  &gt; <br>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;From: Justin A. Lemkul &lt;<a
                    moz-do-not-send="true"
                    href="http://us.mc1301.mail.yahoo.com/mc/compose?to=jalemkul@vt.edu"
                    ymailto="mailto:jalemkul@vt.edu">jalemkul@vt.edu</a>&gt;<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Subject: Re: [gmx-users] buckingham
                  potentials<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;To: "Gromacs Users' List" &lt;<a
                    moz-do-not-send="true"
href="http://us.mc1301.mail.yahoo.com/mc/compose?to=gmx-users@gromacs.org"
                    ymailto="mailto:gmx-users@gromacs.org">gmx-users@gromacs.org</a>&gt;<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Date: Wednesday, December 22, 2010, 8:04 AM<br>
                  &gt; <br>
                  &gt; <br>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;sreelakshmi ramesh wrote:<br>
                  &gt;&nbsp; &nbsp; &nbsp; &gt; Dear justin,<br>
                  &gt;&nbsp; &nbsp; &nbsp; &gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; I have no clues&nbsp;
                  about rewriting a force field<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;so i think i can t proceed with this anymore.<br>
                  &gt;&nbsp; &nbsp; &nbsp; &gt;<br>
                  &gt;&nbsp; &nbsp; &nbsp; &gt; thanks a lot for your patient reply.<br>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;For the future, you will waste a lot less
                  time (your own, and that<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;of those who are trying to help you) if you
                  provide a clear, concise<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;statement of what you hope to accomplish in
                  your very first post.&nbsp; &nbsp;&nbsp;&nbsp;You began this adventure
                  seeking help on how to (generically) use<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Buckingham potentials.&nbsp; What you should have
                  asked was how to use<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Buckingham potentials within the Gromos force
                  field.&nbsp; Then, instead<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;of swapping ten emails, you would have
                  received your answer in one.<br>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;-Justin<br>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;-- ========================================<br>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Justin A. Lemkul<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Ph.D. Candidate<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;ICTAS Doctoral Scholar<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;MILES-IGERT Trainee<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Department of Biochemistry<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Virginia Tech<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;Blacksburg, VA<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;jalemkul[at]vt.edu | (540) 231-9080<br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;<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>
                  &gt; <br>
                  &gt;&nbsp; &nbsp;&nbsp;&nbsp;========================================<br>
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                  &gt; <br>
                  &gt; <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]vt.edu | (540) 231-9080<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>
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