<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr">Hi Maksim,<div><br></div><div>Remember when you did your set up command of <font face="monospace">-3d</font>? You will want to increase the number of blocks in the setup command. See Table 5.1 in the User Guide which can be found on the website. The command you're looking to use is: <font face="monospace">-maxblocks=#</font><font face="arial, sans-serif">. If I recall correctly, I think the default is 1000, so you will want to increase it higher. As you were starting to discover, this allows enough memory to be allocated to each processor for the number of blocks desired. As the simulation goes on with time, you may hit this error due to the wall that has been set up, so to speak. In some ways, it's utility is meant to protect your system and allocations.</font></div><div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">Conversely, if that number is too large for your system, you will want to decrease it (for any other people looking at the archives in the future and struggling).</font></div><div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">If you don't want to re-setup and </font><font face="monospace">make</font><font face="arial, sans-serif"> your problem again, you can just decrease the number of levels of refinement, or initial blocks (</font><font face="monospace">nblockx, nblocky, nblockz</font><font face="arial, sans-serif">) in the <i>flash.par</i> at runtime.<br><br>Best,<br>Marissa</font></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 7, 2021 at 1:47 AM Maksim Kozlov <<a href="mailto:maksim.kozlov@nu.edu.kz">maksim.kozlov@nu.edu.kz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear Friends,<div>I am fairly new to FLASH so I would really appreciate your help. I am trying to run 3D Sedov simulation (I am running setup with -3d option). When I slightly changed the default radius of initial perturbation from sim_rInit=0.013671875 to sim_rInit=0.02 I received </div><div>"Too many blocks. Increase MAXBLOCKS or use more processors." I tried to change iProcs, jProcs and kProcs to 3 without any effect. So how can I change MAXBLOCKS?</div><div>Thank you very much!</div><font color="#888888"><div>MAksim </div></font></div>
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