Intel® Integrated Performance Primitives
Community support and discussions relating to developing high-performance vision, signal, security, and storage applications.

Write combining

BMart1
New Contributor II
101 Views

Hi,

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?

Bruno

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2 Replies
Sergey_K_Intel
Employee
101 Views

Hi Bruno,

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?

It won't take too much of time.

BMart1
New Contributor II
101 Views

The problem with copying is that I need to tile considering cache sizes. If I just do one pass it's always optimum.

Is CopyManaged bettr for write combining memory?

Bruno

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