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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">These files were too big for the email system that manages our development mailing list.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Files were uploaded to <a href="https://bitbucket.org/multicoreware/x265/downloads">https://bitbucket.org/multicoreware/x265/downloads</a> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Tom Vaughan [mailto:<a href="mailto:tom.vaughan@multicorewareinc.com">tom.vaughan@multicorewareinc.com</a>] <br><b>Sent:</b> Friday, August 26, 2016 2:49 PM<br><b>To:</b> Development for x265<br><b>Subject:</b> x265 on IBM POWER</span></p></div></div><p class="MsoNormal"> </p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Attached is a set of source files contributed by IBM, optimizing x265 for the POWER8 architecture.</span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">threadpool.cpp: we have modified the allocThreadPools() function to cope with core numbering on P8.</span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">dct_altivec.cpp, intrapred_altivec.cpp, ipfilter_altivec.cpp, pixel_altivec.cpp: a set of vectorized functions for the POWER architecture. IBM placed these files under source/common/ppc (a newly created dir)</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Although this is not in proper patch format, I wanted to share these optimizations with the wider community while the x265 development team reviews, tests and integrates these improvements. Feedback and comments are welcomed. Many thanks to the team at IBM for contributing these improvements. </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">If there are open source (x265 FFMPEG, etc.) developers who need access to IBM POWER server instances, there was an <a href="https://bitbucket.org/multicoreware/x265/issues/138/bounty-1-use-altivec-to-optimize-the-file">offer made earlier on our Bitbucket issues tracker</a> by David Edelsohn at IBM to provide access.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Tom</span></p></div></body></html>