<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Ah OK. 6GB of LAZ would probably be equivalent to 75GB of LAS files. Still not a lot of data. Definitely something I would expect to process on a regular laptop without effort ...<div class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="WordSection1" style="page: WordSection1;"><div class="" style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span lang="EN-US" class="" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);">I’ve witnessed RAM usage of more than 38 GB (intensive swap usage) on my own dev box (8 cores, 16 GB RAM, SSD), and the process could not finish because it ran out of memory. So extrapolating to the target machine, this is unbearable.</span></div></div></blockquote><div class=""><br class=""></div><div class="">Looks like one of the processes in the pipeline requires loading the entire (uncompressed) dataset in memory ? Someone in the PDAL dev team may comment here. If so, then that is a bit of a worry regarding scalability ...</div><div class=""><br class=""></div><div class="">Albert</div><br class=""><div class="">
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<br class=""><div><blockquote type="cite" class=""><div class="">On 16-Jun-2017, at 12:18, GUIMMARA, Sébastien (External) <<a href="mailto:sebastien.guimmara.external@airbus.com" class="">sebastien.guimmara.external@airbus.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class="webkit-block-placeholder"></div><div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Albert,<o:p class=""></o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">My goal is to be able to convert datasets on average desktop computers (4 core/8 GB RAM, spinning drives) without blowing memory requirements, so that they can be quickly displayed in a virtual globe.<o:p class=""></o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">The dataset is indeed 6 GB of LAZ files. The goal is to process it with PDAL (outlier, range, colorinterp/colorize, normal), then tile it to 3D Tiles with Entwine.<o:p class=""></o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">I’ve witnessed RAM usage of more than 38 GB (intensive swap usage) on my own dev box (8 cores, 16 GB RAM, SSD), and the process could not finish because it ran out of memory. So extrapolating to the target machine, this is unbearable.<o:p class=""></o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">For now, my workflow to circumvent this would be to decimate each LAZ file in a separate pipeline prior to merge them and go on with the filters.<o:p class=""></o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Sébastien</span></div><div class=""></div></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class="webkit-block-placeholder"></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""> <br class="webkit-block-placeholder"></div><font color="#008000" size="1" face="Verdana" style="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;" class=""><span id="cid:imagee88352.JPG@b307f4bb.488e45c1"><imagee88352.JPG></span><span class="Apple-converted-space"> </span>Please consider the environment before printing this email message.</font><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""></span><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class="webkit-block-placeholder"></div><hr style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><p dir="ltr" class="{Imprint.UniqueID}" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; margin-right: 0px;"><font color="#999999" size="2" face="Verdana" class=""><em class="">Ce courriel (incluant ses éventuelles pièces jointes) peut contenir des informations confidentielles et/ou protégées ou dont la diffusion est restreinte. 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Do you really mean 6GB ? Or do you mean 6TB ?<o:p class=""></o:p></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class="">When you say you want to import the data, what are you importing into ? A database ? Another file structure ?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div></div><div class=""><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class=""><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">my desktop computer simply couldn’t handle the memory footprint of such a massive dataset.</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div></blockquote><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class="">What kind of desktop are you using that cannot cope with such a small file ? (unless of course you really mean 6TB).<o:p class=""></o:p></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class="">Albert<o:p class=""></o:p></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-family: Helvetica, sans-serif;" class="">--<br class=""><a href="http://www.oracle.com/" style="color: purple; text-decoration: underline;" class=""><span style="border: 1pt solid windowtext; padding: 0cm; text-decoration: none;" class=""><span id="cid:~WRD000.jpg"><~WRD000.jpg></span></span></a><br class=""></span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class="">Albert Godfrind | Geospatial and Graph technologies | Tel: +33 4 93 00 80 67</span><span class="apple-converted-space"><span style="font-family: Helvetica, sans-serif;" class=""> </span></span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class="">| Mobile: +33 6 09 97 27 23</span><span class="apple-converted-space"><span style="font-family: Helvetica, sans-serif;" class=""> </span></span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class="">| Twitter: @agodfrin</span><span style="font-family: Helvetica, sans-serif;" class=""><br class=""></span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: red;" class="">Oracle</span><span class="apple-converted-space"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class=""> </span></span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class="">Server Technologies<br class="">Centre Régus - Les Algorithmes - Bâtiment ARISTOTE A </span><span style="font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class="">| 2000 Route des Lucioles |</span><span style="font-family: Helvetica, sans-serif;" class=""> </span><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class="">06410 Sophia Antipolis | France</span><span style="font-family: Helvetica, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(102, 102, 102);" class=""><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.apress.com_9781590598993&d=DwMGaQ&c=RoP1YumCXCgaWHvlZYR8PQcxBKCX5YTpkKY057SbK10&r=1qY34HIjMdHQKENpnLMMP4yLfmc3rd-OMDuH2zkUKUk&m=ouipdry-XnkgLWUH6l0Sxec3Oe19MR_IJdXFdvNJXnQ&s=F9wB40TvYdZ5RS04es9Qg8B2HoM8ChmIb2AqQsXZ-Oc&e=" style="color: purple; text-decoration: underline;" class="">Everything you ever wanted to know about Oracle Spatial</a></span><span style="font-family: Helvetica, sans-serif;" class=""><o:p class=""></o:p></span></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div><div class=""><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class=""><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class="">On 15-Jun-2017, at 17:18, GUIMMARA, Sébastien (External) <<a href="mailto:sebastien.guimmara.external@airbus.com" style="color: purple; text-decoration: underline;" class="">sebastien.guimmara.external@airbus.com</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">Hello everyone,</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> </span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">I’m trying to import a massive point cloud as a collection of LAS files (6GB, 27 files), and I realized that my desktop computer simply couldn’t handle the memory footprint of such a massive dataset.</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> </span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">So I’m putting a decimation filter to reduce the size, but I’m having a doubt: is the filter useful here or is the dataset entirely loaded into memory before even applying the filter ? In other words, does the downstream filters controls how the upstream reader loads data into memory ?</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> </span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">If not, would it be a nice feature to include to some (all ?) readers ? Like a builtin decimation/sampling filter.</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> </span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span lang="EN-US" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">Sébastien</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""> <o:p class=""></o:p></span></div></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 7.5pt; font-family: Verdana, sans-serif; color: green;" class=""><imageed0be7.JPG><span class="apple-converted-space"> </span>Please consider the environment before printing this email message.</span><o:p class=""></o:p></div><div class=""><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div></div><div class="MsoNormal" align="center" style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; text-align: center;"><hr size="2" width="100%" align="center" class=""></div><div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; font-variant-caps: normal; text-align: start; -webkit-text-stroke-width: 0px; word-spacing: 0px;" class=""><em class=""><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(153, 153, 153);" class="">Ce courriel (incluant ses éventuelles pièces jointes) peut contenir des informations confidentielles et/ou protégées ou dont la diffusion est restreinte. 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