<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Hello Dear GMX Users,</DIV>
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<DIV>I have installed Gromacs 4 on a QUAD computer by Fedora 11.</DIV>
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<DIV>When I do not use the "mpirun -np 4 g_mdrun ... " command, just one CPU is used.</DIV>
<DIV>When I use the "mpirun -np 4 g_mdrun ... " command, all of the 4 CPUs are used.</DIV>
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<DIV>But the problem is that the time of simulation, although 4 CPUs are used, does not change by using the mpirun command!<BR></DIV>
<DIV>Can you help me please how I can fasten the time of simulation!</DIV>
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<DIV>Thank you very much for your kind help.</DIV>
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<DIV>Best,</DIV>
<DIV>Mahmoud<</DIV></td></tr></table><br>