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Questions tagged [cuda]

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3
votes
2answers
91 views

Can gl_WorkGroupSize be set outside the compute shader?

I am migrating code from CUDA to OpenGL compute shaders. I could not find a way to set the local workgroup size outside the shader; is there a way to set gl_WorkGroupSize in the calling program like ...
3
votes
1answer
92 views

How to avoid slowdown with 25-30 students running simple GPU kernels on 4 GeForce GTX 650 Ti s?

So I'm teaching crash-course in CUDA that teaches students how to write good GPU code (CUDA 7.5 in this case). They kernels they will be running will do matrix multiply on 2048x2048 floating point ...
3
votes
1answer
2k views

Can you do GPGPU on integrated graphics like Intel HD 630 on Core i3?

The Core i3 says it has "integrated graphics" with Intel 630. Does this mean it is like a mini GPU? In which case can use things like CUDA to speed up C sharp programs? Is there much software that ...
3
votes
1answer
1k views

CUDA/OpenCL vs OpenGL compute shader for Path tracer

So I want to implement a path tracer and I am confused between GPGPU computing or using OpenGL's compute shaders. I've already implemented a raytracer using GL's compute shaders. What are the main ...
3
votes
0answers
166 views

Is Nvidia's delta color compression supported in CUDA, or with DirectX UAVs?

Nvidia discusses their lossless delta color compression is on its fourth generation in Pascal, and that it transparently saves bandwidth behind the scenes for rendering workloads. AMD has a similar ...
6
votes
2answers
2k views

A recent approach for subsurface scattering

I read "A Practical Model for Subsurface Light Transport" and "A Rapid Hierarchical Rendering Technique for Translucent Materials". If I understand correctly, the former does not consider the case ...
9
votes
1answer
3k views

Compute Shader vs CUDA/OpenCL

So I just recently learned about the Compute Shader and it looks from what I have picked up the same idea as parallel programming you would do with CUDA or OpenCL, but in the shader pipeline. If I ...
4
votes
1answer
297 views

GDDR5 vs. DDR3 for learning GPU programming on a limited budget?

[Please (kindly) let me know if this is not the place for this question] I'm hoping to learn about GPU programming, but as a college student, I've a quite limited budget. I'm wondering whether I ...
4
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0answers
197 views

CUDA cuMemcpuHtoD vs cuMemcpy2D

Asking it here and not on SO as it seems to be appropriate question for CG. I am learning NVIDIA NVENC API.The SDK supplies a sampled called "NvEncoderCudaInterop" .There is a chunk of code which ...