GPU code

[worktycho]

Two things, one did you install the AMD SDK? Two is the value of OPENCL_INCLUDE_DIR NOT-FOUND? if so you need to set it.

[NiLSPACE]

Do I need the AMD SDK if I have an NVidia?

[worktycho]

If you've got an NVIDA card you need the cuda toolkit but I haven't tried building with that.

[worktycho]

Now doing Biomal Without the linear interpolation at 1ms a chunk.

[bearbin]

Cool Is that better than before?

[worktycho]

Haven't checked. One thing is that it is only using 65% of the GPUs capability. If we implemented batching it would double throughput.

---

What I'm trying to do is implement OpenCl for all the height Generators where it makes sense so I can change the interface when using openCl.

[worktycho]

Did test with the mountains height Gen. Using OpenCL is 75% slower then using the CPU generator. I suspect that this is due to the huge latency at start-up, about 450 microseconds ~ 500,000 CPU cycles. If I can move more things on to the GPU and make the generator asynchronous I should be able to remove that from the throughput though.

[NiLSPACE]

But the HeightGen isn't really the bottleneck is it?

[LO1ZB]

Cant build your branch with thr NV cuda sdk, because it don't got a "cl.hpp" included.
Even the CUDA SDK 3.1 (with open cl ? 1.1 ? support)

[worktycho]

Did you set the OPENCL_INCLUDE_DIR and OPENCL_LIBRARY_PATH vars? It may be cmake can't find cuda.

---

@STR_Warrior, no but if part of the pipeline is on the CPU and part GPU it will cause latencies so I need to transfer most parts of the pipeline.