Hi all, I've recently tried enabling the GDAL_FORCE_CACHING option, and found it gives some significant improvements to TIFF/VRT read speeds.
However, using GDAL 2.3.0, I've now found that when reading large VRTs, I can sometimes get subtly different values - up to about 1% summed difference across a 1000x1000 or so area. Is there a known issue in GDAL_FORCE_CACHING in this older version of GDAL, or alternatively have I misunderstood the use of this option and is this expected behaviour? Regards, Daniel T +44 (0) 1756 799919 www.jbarisk.com<http://www.jbarisk.com> [Visit our website]<http://www.jbarisk.com> [http://www.jbagroup.co.uk/imgstore/JBA-Email-Sig-Icons-LINKEDIN.png] [Follow us on Twitter] <https://twitter.com/jbarisk> Our postal address and registered office is JBA Risk Management Limited, 1 Broughton Park, Old Lane North, Broughton, Skipton, North Yorkshire BD23 3FD. Find out more about us here: www.jbarisk.com<http://www.jbarisk.com/> and follow us on Twitter @JBARisk<http://twitter.com/JBARisk> and LinkedIn<https://www.linkedin.com/company/2370847?trk=tyah&trkInfo=clickedVertical%3Acompany%2CclickedEntityId%3A2370847%2Cidx%3A2-1-2%2CtarId%3A1447414259786%2Ctas%3AJBA%20RISK%20MANAGEMENT> The JBA Group supports the JBA Trust. All JBA Risk Management's email messages contain confidential information and are intended only for the individual(s) named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. JBA Risk Management Limited is registered in England, company number 07732946, 1 Broughton Park, Old Lane North, Broughton, Skipton, North Yorkshire, BD23 3FD, Telephone: +441756799919
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