<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><style contenteditable="false">div.maildrop_icon {background-image: url('https://www.icloud.com/mail_resources/icloud_download.png');background-repeat: no-repeat;display: inline-block;margin: 15px 18px 13px 18px;height: 25px;width: 26px}@media(-webkit-min-device-pixel-ratio: 2),(min-resolution: 192dpi) {div.maildrop_icon {background-image: url('https://www.icloud.com/mail_resources/icloud_download@2x.png');background-size: 25px 26px;}}</style><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><a href="https://www.icloud.com/attachment/?u=https%3A%2F%2Fcvws.icloud-content.com%2FB%2FAV3mFZ-zZRHlHhniGu3DY_kq1D9fAaqGYMOMD0rRh0AcusAdLIy1-YhV%2F%24%7Bf%7D%3Fo%3DAjVz7MkLLygaJThUK4zzVt67BUy7E3Eby8NdTbNNL8k5%26v%3D1%26x%3D3%26a%3DCAogiFKMPsFpEtF7j-2hm0ivIjpzWqRa8MQZP9KgCDt1JIUSJxChvOXlyi0YoczgudQtIgEAKggByAD_KF1C91IEKtQ_X1oEtfmIVQ%26e%3D1568857925%26k%3D%24%7Buk%7D%26fl%3D%26r%3DA416EFB0-C263-4EA7-90B0-8B8B56E74C9A-1%26ckc%3Dcom.apple.largeattachment%26ckz%3D442E1C34-1D08-4EC0-AA53-0D2CD33553BC%26p%3D65%26s%3DVffuKq53ydiTN6ANzXTYh50hY3Q&uk=fqxgM6Qz-aRYyxgHs9xgzA&f=Images.zip&sz=210118" class="x-apple-maildropbanner" data-expiration="1568857923000.000000" data-url="https://cvws.icloud-content.com/B/AV3mFZ-zZRHlHhniGu3DY_kq1D9fAaqGYMOMD0rRh0AcusAdLIy1-YhV/Images.zip?o=AjgMemLwhjPFbuvNGlB8QFESNVqP-IxszB0JvNOELPR0&v=1&x=3&a=CAoghKunNB_qFhj2Wuq1ZkY81-2JA7_fe448XU1MQcI40VcSJxCPtOXlyi0Yj8TgudQtIgEAKggByAD_Rx4IelIEKtQ_X1oEtfmIVQ&e=1568857924&k=fqxgM6Qz-aRYyxgHs9xgzA&fl=&r=501EDCA8-2454-4E30-B937-5AE528E8F977-1&ckc=com.apple.largeattachment&ckz=442E1C34-1D08-4EC0-AA53-0D2CD33553BC&p=65&s=Sg5gTXJuyndubDLw3FTVxnaqOAk" data-size="210118" style="font: 13px 'Helvetica Neue',sans-serif; color: #808080; font-weight: 300"><div style="height:0px; border-top:1px solid #ececec" class=""></div><div style="overflow: auto" class=""><div style="float:left; margin-right:62px" class=""><div style="height:25px; display:table-cell; vertical-align:bottom" class="">Download full resolution images</div><div class=""></div><div style="height:19px; display:table-cell; vertical-align:bottom" class="">Available until Sep 19, 2019</div></div><div style="float:right;width:62px; margin-left:-62px" class=""><div class="maildrop_icon"></div></div></div><div style="height:0px; border-top:1px solid #ececec; margin-bottom:15px" class=""></div></a><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Mr. Benjamin,<div class=""><br class=""></div><div class="">Thanks for your reply, I’m trying to simulate one laser beam (1kJ) focus on a modulation target, I got the error at step 43576 when added Biermann battery term. In other simulations, I sometimes also met this error. I shared *.log file and output file in attachment. Thanks a lot!</div><div class=""><br class=""></div><div class=""><img apple-inline="yes" id="64BDC752-52C3-4F3D-AA55-552CAFE0BE44" width="316" height="240" src="cid:94C4D8A6-69A7-4F85-AD58-16C5B0FB220F" class=""><div class="x-apple-maildrop" data-url="https://cvws.icloud-content.com/B/Ac7_hWEpPi5W-Gad6oyhvGtGhtD0AbxDONDNWj4IgOXbrJaMD2bvrvkW/lasslab.log?o=Av5HWgseV3sVDVosppi1WzFSnK-XkdywwoZG-Jo0ws5B&v=1&x=3&a=CAogjV4THdv5STikkY-CLoZrkUPmiFsat5AOvJArlr45spsSJxCsq-Xlyi0YrLvgudQtIgEAKggByAD_PbF-G1IERobQ9FoE7675Fg&e=1568857922&k=s81_VTf3TYP2MV-uKXzfyQ&fl=&r=73ACCE78-1656-415D-95C7-C50EB1BCF8D8-1&ckc=com.apple.largeattachment&ckz=442E1C34-1D08-4EC0-AA53-0D2CD33553BC&p=65&s=E9W0IRnI6Q6PY-ihuyuVRyC_-58" data-filename="lasslab.log" data-size="27885457" data-expiration="1568857924000.000000" style="margin: 15px; border: 1px solid #CACACA; border-radius:15px; height:134px; display:inline-block; min-width:159px; font-family:'Helvetica Neue',sans-serif;"><a href="https://www.icloud.com/attachment/?u=https%3A%2F%2Fcvws.icloud-content.com%2FB%2FAc7_hWEpPi5W-Gad6oyhvGtGhtD0AbxDONDNWj4IgOXbrJaMD2bvrvkW%2F%24%7Bf%7D%3Fo%3DAuwLIuS99YRH8mRAEV0FEPxzGTQqV49KHqQQWL1Kl4dO%26v%3D1%26x%3D3%26a%3DCAogmmiAuKcja3ba87ZD924kzi8cnJSAFim7PHVm5xwetNgSJxCZuOXlyi0YmcjgudQtIgEAKggByAD_K-99HFIERobQ9FoE7675Fg%26e%3D1568857924%26k%3D%24%7Buk%7D%26fl%3D%26r%3DBB993D71-699B-4677-A62B-6CEF7205A8CC-1%26ckc%3Dcom.apple.largeattachment%26ckz%3D442E1C34-1D08-4EC0-AA53-0D2CD33553BC%26p%3D65%26s%3DUNU38dN3jXDTdmHuiEY53N0WKIA&uk=s81_VTf3TYP2MV-uKXzfyQ&f=lasslab.log&sz=27885457" style="text-align: center; text-decoration:none; font-size: 14px; color: #007AFF; display:block; margin:40px 10px 0px" class="">Click to Download</a><div style="text-align: center; font-size:12px; color: #808080" class=""><div style="margin:4px 10px 0px" class="">lasslab.log</div><div style="margin:3px 10px 0px" class="">27.9 MB</div></div></div><div class="x-apple-maildrop" data-url="https://cvws.icloud-content.com/B/ARtvL3gbH_tTzKYdl8P3aH0JX3paAaLwRLEJUVMJnyzW2KP5BkC0wNH6/nohup.out?o=AtYyCWHVLheJ_n5lewSCETjJNgdCTM6FhEIbVOdJdBOz&v=1&x=3&a=CAogs2XbZsB41b3YbMpjf2mlcu9DGTyyb-8Rj8YGXr7zRfQSJxC2wOXlyi0YttDgudQtIgEAKggByAD_ebyTulIECV96WloEtMDR-g&e=1568857925&k=iTJ8fwEUWVoyUAlmq_-qbQ&fl=&r=D7BEA9B0-4EDC-442D-84F9-C0180B7ADC52-1&ckc=com.apple.largeattachment&ckz=442E1C34-1D08-4EC0-AA53-0D2CD33553BC&p=65&s=FYDmXkfTYbnrsvUQ2L_hrEJuu9M" data-filename="nohup.out" data-size="4917382" data-expiration="1568857923000.000000" style="margin: 15px; border: 1px solid #CACACA; border-radius:15px; height:134px; display:inline-block; min-width:159px; font-family:'Helvetica Neue',sans-serif;"><a href="https://www.icloud.com/attachment/?u=https%3A%2F%2Fcvws.icloud-content.com%2FB%2FARtvL3gbH_tTzKYdl8P3aH0JX3paAaLwRLEJUVMJnyzW2KP5BkC0wNH6%2F%24%7Bf%7D%3Fo%3DAuv8EDE6Z7XHiusyvb5pMXN2mvVIwE5PvphJpTODbCk9%26v%3D1%26x%3D3%26a%3DCAog0m5MC2n5hrhCcEb655Uit1TEBViCwVvo2c5sSArJb-YSJxDWr-Xlyi0Y1r_gudQtIgEAKggByAD_KKBLTFIECV96WloEtMDR-g%26e%3D1568857923%26k%3D%24%7Buk%7D%26fl%3D%26r%3DF3E89427-41BD-4072-AB73-7E5891CC9F68-1%26ckc%3Dcom.apple.largeattachment%26ckz%3D442E1C34-1D08-4EC0-AA53-0D2CD33553BC%26p%3D65%26s%3DCvkbMSA80DLJHvs1PCH8IflO4qw&uk=iTJ8fwEUWVoyUAlmq_-qbQ&f=nohup.out&sz=4917382" style="text-align: center; text-decoration:none; font-size: 14px; color: #007AFF; display:block; margin:40px 10px 0px" class="">Click to Download</a><div style="text-align: center; font-size:12px; color: #808080" class=""><div style="margin:4px 10px 0px" class="">nohup.out</div><div style="margin:3px 10px 0px" class="">4.9 MB</div></div></div><br class=""><div class=""><br class="webkit-block-placeholder"></div><div class="">
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><div style="caret-color: rgb(255, 255, 255);" class="">Best,<br class="Apple-interchange-newline">-----------------------------------------<br class=""><br class="">Jianzhao Wang<br class=""><br class="">Department of Astronomy, Beijing Normal University<br class="">No.19, Xinjiekouwai Street, Haidian District, Beijing, 100875<br class=""><br class="">Tel: +86 13141149966<br class=""><a href="mailto:astrowjz@mail.bnu.edu.cn" class="">Email:astrowjz@mail.bnu.edu.cn</a><br class=""> <a href="mailto:astrowjz@163.com" class="">astrowjz@163.com</a><br class=""></div><br class=""></div><br class="Apple-interchange-newline">
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<div><br class=""><blockquote type="cite" class=""><div class="">On Aug 20, 2019, at 00:55, Benjamin Khiar <<a href="mailto:benjamin.khiar@gmail.com" class="">benjamin.khiar@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div dir="ltr" class="">Hey J.Z.,<div class=""><br class=""></div><div class="">In addition to what Ryan said, to better help you, it would be helpful for us to know more about your simulation:</div><div class="">- What are you trying to do ?</div><div class="">- Share your *.log file</div><div class="">- Maybe show some outputs</div><div class="">...</div><div class=""><br class=""></div><div class="">Cheers,</div><div class="">-- <br class=""><div dir="ltr" class="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><font color="#3d85c6" class="">Benjamin Khiar<br class=""></font></div><div class=""><font color="#3d85c6" class="">Postdoctoral researcher</font></div><div class=""><font color="#3d85c6" class="">FLASH Center for Computational Science</font></div><div class=""><font color="#3d85c6" class="">University of Chicago</font></div></div></div></div></div></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le dim. 18 août 2019 à 23:43, Ryan Farber <<a href="mailto:rjfarber@umich.edu" class="">rjfarber@umich.edu</a>> a écrit :<br class=""></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" class="">Hi J.Z.,<div class=""><br class=""></div><div class="">In general, dt becomes very small because either</div><div class="">1) bulk speed becomes very large</div><div class="">2) sound speed becomes very large</div><div class="">3) alfven speed becomes very large</div><div class=""><br class=""></div><div class="">Since you mentioned Biermann battery, I would guess the magnetic field becomes too strong. You can check which is the culprit either by computing the speeds from an output file using for example yt: <a href="https://yt-project.org/" target="_blank" class="">https://yt-project.org/</a> Or, you can check the *.dat file.</div><div class=""><div class=""><div dir="ltr" class="gmail-m_-2364970195809884972gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div dir="ltr" class=""><br class=""></div><div class="">Best,</div><div dir="ltr" class="">--------<div class="">Ryan</div></div></div></div></div></div></div><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Aug 18, 2019 at 7:26 PM 王荐钊 <<a href="mailto:astrowjz@mail.bnu.edu.cn" target="_blank" class="">astrowjz@mail.bnu.edu.cn</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="">Hello FLASH USERS !<div class=""><br class=""></div><div class="">When I add Biermann Battery module to my simulation like this, after running many steps, I will get an error message “[Hydro]: Computed dt is not positive! Aborting!” I think it is related to documents “Hydro_computeDt.F90” and “hy_uhd_dataReconstOneStep.F90”, but I don’t know how to fix it. So any advice? </div><div class=""><br class=""></div><div class="">Thanks,</div><div class="">J.Z. Wang</div><div class=""><br class=""></div><div class=""><span id="cid:16ca82cf2585b206ef61"><PastedGraphic-1.png></span></div><div class=""><br class=""></div><div class=""><font color="#ff1f00" class="">[ERRORS]:</font></div><div class=""><br class=""></div><div class=""><span id="cid:16ca82cf258e26fb6052"><Pasted Graphic 1.png></span></div><div class=""><br class=""></div><div class=""><span id="cid:16ca82cf2585b2e86773"><PastedGraphic-2.png></span><br class="">
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