<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On 2 Apr 2017, at 04:29, Christian D. Ott <<a href="mailto:cott@tapir.caltech.edu">cott@tapir.caltech.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi All,<br><br>I've been playing around with the GW150914 par file and have been trying <br>to set up a pure Cartesian AMR run with the exact same grid setup in the <br>Cartesian region.<br><br>I noticed that<br><br>Coordinates::additional_overlap_size = 3<br><br>(that appears to be required) not just increases the size of the <br>cubed-sphere patches, but also of all patches in the Cartesian region, <br>including refined regions. Is this a feature (if so, why?) or a bug?<br></blockquote><div><br></div><div>Hi Christian,</div><div><br></div><div>I have never noticed this; I hope it's not happening, as it would be very strange! If it is happening, it definitely sounds like a bug. I'm fairly sure I have checked the refined regions in the past when using Llama, and they were the expected sizes. So if this is happening now, it is likely a change (probably to Carpet) that has happened relatively recently (the past year or two).</div><div><br></div><div>Can you post the parameter files and carpet-grid.asc files for the two runs which differ only in additional_overlap_size?</div><div><br></div><div>Is it possible that by increasing additional_overlap_size, the coarsest Cartesian grid RL0 is being moved inwards too close to the buffer zones of RL1, and RL1 is being extended to cover RL0 as a result? This would result in RL1 appearing to increase in size, but it shouldn't affect the finer levels. Do you see the finer levels also change?</div></div><br><div apple-content-edited="true">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>-- </div><div>Ian Hinder</div><div><a href="http://members.aei.mpg.de/ianhin">http://members.aei.mpg.de/ianhin</a></div></div></div></div></div>
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