https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067280#M24384 <P>Hi,</P> <P>Does ipp read from the bytes it writes? I'm contemplating resizing directly to graphics memory. It's fine to write to GPU memory, but slow to read from it. Can ipp output to write only memory? Does it overwrite previously written bytes?</P> <P>Bruno</P> Mon, 27 Mar 2017 13:33:34 GMT BMart1 2017-03-27T13:33:34Z https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067280#M24384 <P>Hi,</P> <P>Does ipp read from the bytes it writes? I'm contemplating resizing directly to graphics memory. It's fine to write to GPU memory, but slow to read from it. Can ipp output to write only memory? Does it overwrite previously written bytes?</P> <P>Bruno</P> Mon, 27 Mar 2017 13:33:34 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067280#M24384 BMart1 2017-03-27T13:33:34Z https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067281#M24385 <P>Hi Bruno,</P> <P>This may happen, so I wouldn't rely on this. Why you don't use temporary image store and, then copy temporary image to graphics memory?</P> <P>It won't take too much of time.</P> Tue, 28 Mar 2017 05:10:48 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067281#M24385 Sergey_K_Intel 2017-03-28T05:10:48Z https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067282#M24386 <P>The problem with copying is that I need to tile considering cache sizes. If I just do one pass it's always optimum.</P> <P>Is CopyManaged bettr for write combining memory?</P> <P>Bruno</P> Tue, 28 Mar 2017 13:49:57 GMT https://community.intel.com/t5/Intel-Integrated-Performance/Write-combining/m-p/1067282#M24386 BMart1 2017-03-28T13:49:57Z