np. glad you got it sorted. Piotr
________________________________________ From: openexr-devel-bounces+pstanczyk=ilm....@nongnu.org [openexr-devel-bounces+pstanczyk=ilm....@nongnu.org] on behalf of Paul Miller [p...@fxtech.com] Sent: 31 October 2012 08:15 To: openexr-devel@nongnu.org Subject: Re: [Openexr-devel] tips for maximizing write speed? On 10/30/2012 4:29 PM, Paul Miller wrote: > On 10/30/2012 3:57 PM, Piotr Stanczyk wrote: >> Hey - I've not seen that before ... I'll see if I can replicate that >> at our end. >> >> Are you writing scanlines or tiles? > > Scanlines. Seems to be in the ZIP compression. When I turn off > compression it runs nearly as fast as 1.4. I haven't fiddled with the > other compression options. > > I'm not sure if enabling threads will make a difference. I'm pretty much > using the default constructors for everything. > > Thinking I may have built the library with the wrong optimization > settings, I went back and kicked everything up a notch, but it's still > quite a bit slower. Checked on both Linux and Windows. > > Thanks for checking, Piotr. Ok I nailed it down. My new exporter is converting the alpha to 4 channels and saving all 4 channels. 4x slower, duh. Sorry for the false alarm. _______________________________________________ Openexr-devel mailing list Openexr-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/openexr-devel _______________________________________________ Openexr-devel mailing list Openexr-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/openexr-devel
