<div>Hi gromacs users</div>
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<div>I want to know what is purpose of -dt flag in most of commands? in my analysis, different values for -dt </div>
<div>results in outcomes have not determined trend .</div>
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<div>I used this flag for g_rms as follows : </div>
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<div>if g_rms -f pr.xtc -s pr.tpr -n pr.ndx -o 5.xvg -dt 5 so :</div>
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<div>gromacs record output every 20 ps</div>
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<div>if g_rms -f pr.xtc -s pr.tpr -n pr.ndx -o 10.xvg -dt 10 so :</div>
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<div>gromacs record output every 20 ps</div>
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<div>if g_rms -f pr.xtc -s pr.tpr -n pr.ndx -o 15.xvg -dt 15 so :</div>
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<div>gromacs record output every 60 ps</div>
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<div>if g_rms -f pr.xtc -s pr.tpr -n pr.ndx -o 20.xvg -dt 20 so :</div>
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<div>gromacs record output every 20 ps</div></div></div></div>
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<div>if g_rms -f pr.xtc -s pr.tpr -n pr.ndx -o 25.xvg -dt 25 so :</div>
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<div>gromacs record output every 100 ps</div></div>
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<div>if g_rms -f pr.xtc -s pr.tpr -n pr.ndx -o 30.xvg -dt 30 so :</div>
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<div>gromacs record output every 60 ps</div>
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<div>in my simulation [ 1 frame = 4 ps ]</div>
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<div>any help will highly appreciated.</div>
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