<html><head><meta http-equiv="Content-Type" content="text/html charset=euc-kr"><base href="x-msg://110/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>2014. 3. 22., ¿ÀÀü 1:30, "Marcella, Marc" <<a href="mailto:MMarcella@AIR-WORLDWIDE.COM">MMarcella@AIR-WORLDWIDE.COM</a>> ÀÛ¼º:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div lang="EN-US" link="blue" vlink="purple" style="font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div class="WordSection1" style="page: WordSection1; "><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">Hi all,<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><br>I had a question about wrf and compiler/machine differences that I was hoping to get some clarity on. I am trying to run the same set of wps/wrf compiled executables on two different machines (the libraries for the machine in which the .exe¡¯s were not compiled on were placed in the exact same location as those on the machine in which the .exe¡¯s were configured/compiled on, hence they run just fine). So essentially, the only difference is the actual machine hardware being used. <o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">For metgrid.exe and real.exe, the results between the two machines are identical, however even with identical met_ems and wrfinput/wrfbdy files, the wrf results are different. By day 58 or so the average differences in TA and especially precipitation, are quite large (on the order of 1-2mm/day). I am trying to run this over Southeast Asia where there is a lot of cumulus convection. But, I wanted to check if this is to be expected to observe such large differences? I did do a quick internet and forum search but couldn¡¯t find specific work documenting this. And, I wanted to see if there was a way in the compiling of the code (via a flag, etc that one can add) to get identical results across machines or even compilers? I ask because what is interesting is that running an identical CCSM.exe on the two machines will yield identical CAM results on the two different machines. <o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><br>Any help or insight you could lend would be greatly appreciated.<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><br>Thanks,<br>Marc<o:p></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div>_______________________________________________<br>Wrf-users mailing list<br><a href="mailto:Wrf-users@ucar.edu" style="color: purple; text-decoration: underline; ">Wrf-users@ucar.edu</a><br><a href="http://mailman.ucar.edu/mailman/listinfo/wrf-users" style="color: purple; text-decoration: underline; ">http://mailman.ucar.edu/mailman/listinfo/wrf-users</a><br></div></blockquote></div><br></body></html>