AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2021.05.02 00:36 "[Tiff] SIMD optimizations", by Larry Bank
2021.05.02 09:48 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.02 10:33 "Re: [Tiff] SIMD optimizations", by ZdPo Ster
2021.05.02 13:55 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.02 14:09 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.02 15:35 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.02 17:20 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.02 17:45 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.03 15:58 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.03 17:28 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.03 17:32 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.03 19:16 "Re: [Tiff] SIMD optimizations", by Jeff Breidenbach
2021.05.03 20:40 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.03 21:09 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.03 21:45 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.03 22:08 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.04 07:44 "Re: [Tiff] SIMD optimizations", by Roger Leigh
2021.05.04 07:50 "Re: [Tiff] SIMD optimizations", by Roger Leigh
2021.05.03 21:44 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.03 21:55 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.03 22:50 "Re: [Tiff] SIMD optimizations", by Akira Urushibata
2021.05.04 17:34 "Re: [Tiff] SIMD optimizations", by Steve Underwood
2021.05.04 17:44 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.04 18:07 "Re: [Tiff] SIMD optimizations", by Toby Thain
2021.05.04 20:59 "Re: [Tiff] SIMD optimizations", by Michael Shiels
2021.05.04 21:02 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.05 01:14 "Re: [Tiff] SIMD optimizations", by Steve Underwood

2021.05.02 00:36 "[Tiff] SIMD optimizations", by Larry Bank

Hi All,

I've begun writing SIMD optimized code for libtiff. My last note to this mailing list didn't get any responses, but I still would appreciate support/feedback from interested parties. I don't have any experience with the automatic build process on Gitlab, but it's throwing an error from my changes for a certain target platform. The code requires at least SSSE3 on Intel and NEON on Arm. This latest round of code speeds up overall decode by 20+% if the 'predictor' is used. There is a lot more code which needs optimization. I don't use libtiff, so it would be helpful for people to speak up and tell me what type of images they encode/decode with it. I can do similar improvements to the encode side if it would be useful. I forked libtiff and my latest changes are here:

https://gitlab.com/bitbank/libtiff

Larry B.