<div dir="ltr"><div>Hi all,</div>
<div> </div>
<div>I am running a Modified LaserSlab example for three materials with the following setup line:</div>
<div><span lang="EN-GB">
<p>Slab3 -2d +pm4dev -nxb=16 -nyb=16 +mtmmmt +mgd species=cham,targ,foil mgd_meshgroups=6 -parfile=example.par +3t -maxblocks=1000</p>
<p>the run goes OK at the first time with <span lang="EN-GB">lrefine_max=6 but when I goes with <span lang="EN-GB">lrefine_max=9 I got the following warning message :</span></span></p><span lang="EN-GB"><span lang="EN-GB"><span lang="EN-GB">
<p>Warning: The initial timestep is too large.</p>
<p>initial timestep = 1.000000000000000E-014</p>
<p>CFL timestep = 5.139420973957487E-014</p>
<p>Resetting dtinit to TIMESTEP_SLOW_START_FACTOR*dtcfl.</p>
<p>My time parameters was:</p><span lang="EN-GB">
<p>#######################</p>
<p># TIME PARAMETERS #</p>
<p>#######################</p>
<p>tstep_change_factor = 1.1</p>
<p>cfl = 0.4</p>
<p>dt_diff_factor = 1.0e+100 # Disable diffusion dt</p>
<p>rt_dtFactor = 0.02</p>
<p>hx_dtFactor = 1.0e+100</p>
<p>tmax = 1.0e-8</p>
<p>dtmin = 0.1e-13</p>
<p>dtinit = 0.1e-13</p>
<p>dtmax = 1.0e-08</p>
<p>nend = 800</p>
<p>So I reduced the initial time step and made dtinit=dtmin=0.1e-14 and I increased nend to 8000 as I am really interested in time when it reaches to 50ps until 200ps. However, by doing that , the warning message does not exist any more but I found the run didn't complete and just reach when t=5e-11 and n step was only 1809 . Also, I found an output file regard to Hypre library which I didn't understand what does mean. I have attached with this e-mail my flash.par file, out.log, lasslab.log and the output messages regard to Hpyre file. I need my run reach to time from 50ps until 200 ps. Could you help me with this, please?</p>
<p>PS: the flash,par is as same as example.par. Also,I wonder if the problem because I run the same problem twice. I found that by mistake I run the same file twice. Is this the reason that the run didn't complete ? and what does hypre message mean?</p>
<p>Thanks,</p>
<p>Reem</p></span></span></span></span></span></div>
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