<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:24px"><div id="yui_3_16_0_ym19_1_1472845313126_68547"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68548">I think there is no real speed for WRF model to be
run. It depend</span><span lang="ZH-CN" style="font-size:12.0pt;line-height:115%;font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"" id="yui_3_16_0_ym19_1_1472845313126_68549">ｓ</span><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68550"> on the setting in the
namelist</span><span lang="ZH-CN" style="font-size:12.0pt;line-height:115%;font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"" id="yui_3_16_0_ym19_1_1472845313126_68551">，</span><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68552"> especially</span><span lang="ZH-CN" style="font-size:12.0pt;line-height:115%;font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"" id="yui_3_16_0_ym19_1_1472845313126_68553"> </span><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68554">the physics and dynamics
options.</span><span lang="ZH-CN" style="font-size:12.0pt;line-height:115%;font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"" id="yui_3_16_0_ym19_1_1472845313126_68555"> </span><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68556">It depends also on
computer or the compiler you are using. For example in my la</span><span lang="ZH-CN" style="font-size:12.0pt;line-height:115%;font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:SimSun;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"" id="yui_3_16_0_ym19_1_1472845313126_68557">ｂ</span><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68558"> the have chosen to use
the Intel compiler with ifort. It is experienced to be faster than the
others.<o:p id="yui_3_16_0_ym19_1_1472845313126_68559"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68560"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68561">I have experienced that it is taking about 1 second to
run each timestep (180 seconds) of 30km horizontal resolution and one domain.
To run one hour would take:<o:p id="yui_3_16_0_ym19_1_1472845313126_68562"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68563"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68564">- 1 second to run 180 seconds<o:p id="yui_3_16_0_ym19_1_1472845313126_68565"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68566"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68567">- x seconds to run 3600 seconds (1 hour)<o:p id="yui_3_16_0_ym19_1_1472845313126_68568"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68569"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68570">That would give us:<o:p id="yui_3_16_0_ym19_1_1472845313126_68571"></o:p></span></div><div style="margin-top: 0px; margin-bottom: 1em; font-family: Verdana, Geneva, sans-serif; color: rgb(51, 51, 51); font-size: 13px; line-height: 16.003px;" id="yui_3_16_0_ym19_1_1472845313126_70501"><a title="TeX" href="http://www.m2lab.org/filter/tex/displaytex.php?texexp=x%3D%5Cfrac%7B3600%20%2A%201%7D%7B180%7D%3D20" id="yui_3_16_0_ym19_1_1472845313126_70503" style="line-height: 16.003px; text-decoration: none; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);" title-off=""><img title="x=\frac{3600 * 1}{180}=20" alt="x=\frac{3600 * 1}{180}=20" src="http://www.m2lab.org/filter/tex/pix.php/bfabcb5ca33b5f1c9b082c1cb83e34d0.gif" style="border-width: 0px; border-style: initial; max-width: 540px; min-height: auto;" id="yui_3_16_0_ym19_1_1472845313126_70504" data-id="40f86005-d5f2-feb6-6ed3-81d345ea6f9f" title-off="" class=""></a><br></div><div id="yui_3_16_0_ym19_1_1472845313126_68578"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68579">So, it takes 20 seconds to run 1 hour. To run one
day would take:<o:p id="yui_3_16_0_ym19_1_1472845313126_68580"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68581"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68582">20 seconds/hour * 24 hours = 480 seconds<o:p id="yui_3_16_0_ym19_1_1472845313126_68583"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68584"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68585">Hence, it would take 480 seconds (8 minutes) to run
1 day. If I wanted to run 1 year of simulations, that would take me:<o:p id="yui_3_16_0_ym19_1_1472845313126_68586"></o:p></span></div><div id="yui_3_16_0_ym19_1_1472845313126_68453">
</div><div dir="ltr" id="yui_3_16_0_ym19_1_1472845313126_68587"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"" id="yui_3_16_0_ym19_1_1472845313126_68588">8 minutes/day * 365 days = 2920 minutes (~49 hours)<o:p id="yui_3_16_0_ym19_1_1472845313126_68589"></o:p></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1472845313126_68587"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif""><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1472845313126_68587"><span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif"">Ｂａｔｅｂａｎａ</span></div></div></body></html>