Hey Al, Are you grabbing code from the develop branch? There should be a input file method :
//--------------------------------------------------------------- // Check if SSE optimization is enabled // // Call after setFrameBuffer() to query whether optimized file decoding // is available - decode times will be faster if returns true // // Optimization depends on: // the file type (only scanline data is supported), // the framebuffer channels (RGB/RGBA mono or stereo) // the framebuffer channel types (all channels half-float format only) // the file channels (RGB/RGBA mono or stereo) // the file channel types (all channel half-float format only) // whether SSE2 instruction support was detected at compile time // // Calling isOptimizationEnabled before setFrameBuffer will throw an exception // //--------------------------------------------------------------- isOptimizationEnabled Can you run that and let me know what you are seeing? The read times should indeed be mostly dominated by the (de)compressor workload. However, on my machine here I saw something in the region of 10-15% improvement. Are you able to try this on an uncompressed file? You should see quite a significant speed up there. Let me know if that is not the case and we can look into this further. ________________________________________ From: openexr-devel-bounces+pstanczyk=ilm....@nongnu.org [openexr-devel-bounces+pstanczyk=ilm....@nongnu.org] on behalf of Al Crate [a...@dneg.com] Sent: 20 March 2013 03:32 To: openexr-devel@nongnu.org Subject: [Openexr-devel] iif-optimisations branch tests Hi all, Just built the iff-optimised version, I tweaked the code in IlmImfTest to spit out some timings between the aligned and unaligned tests. The timings are almost identical, which isn't what I'd expect, is there anything I should be doing here to make this work, I also tried using the optimised libraries in our playback tool and that showed little to no speed improvements. I'm guessing I'm not using these correctly, is there some compiler option I require or memory alignment needed? cheers al _______________________________________________ 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
