Cuda vs OpenCL

[MatejAustria]

I know this is a common question, but I don't know who to trust.

Could someone explain the difference, or post a link where it is explained without any influence of Nvidia or AMD?

[Archangel1994]

YOu want us to explain Cuda without influence of Nvidia and OpenCL without AMD? No, that's not going to happen

[MatejAustria]

YOu want us to explain Cuda without influence of Nvidia and OpenCL without AMD? No, that's not going to happen

Why?  :blink: 

[spartaman64]

im not familiar but it seems like CUDA is easier to use but openCL can be used for gpu or cpu and both intel and amd uses it and computationally openCL is more powerful but CUDA is more mature 

edit: take this with a grain of salt because im not the most knowledgeable about this

[Geekazoid]

I know this is a common question, but I don't know who to trust.

Could someone explain the difference, or post a link where it is explained without any influence of Nvidia or AMD?

I think NVIDIA's CUDA is just another name for Stream processors like you see on AMD GPUs.

[spartaman64]

I think NVIDIA's CUDA is just another name for Stream processors like you see on AMD GPUs.

i think he is asking about the software side of cuda vs openCL

[MatejAustria]

im not familiar but it seems like CUDA is easier to use but openCL can be used for gpu or cpu and both intel and amd uses it and computationally openCL is more powerful but CUDA is more mature 

but servers like the titan use nvidia tesla cards instead of firepros

[Archangel1994]

Why?  :blink: 

Because Cuda is Nvidia proprietary.

 

Their architecture/cores are capable of CUDA acceleration which means it utilizes the cores of the GPU to increase the speed of whatever it is you are doing

OpenCL is also like Cuda but not proprietary. AMD cards have by a HUGE margin the best OpenCL performance. Again, it can increase the speed of whatever you are doing

[Geekazoid]

i think he is asking about the software side of cuda vs openCL

Ah, okay. My bad.

[spartaman64]

but servers like the titan use nvidia tesla cards instead of firepros

they probably use their own thing instead of cuda or opencl and i dont think firepros are made for supercomputers just workstations

[MatejAustria]

Because Cuda is Nvidia proprietary.

 

Their architecture/cores are capable of CUDA acceleration which means it utilizes the cores of the GPU to increase the speed of whatever it is you are doing

OpenCL is also like Cuda but not proprietary. AMD cards have by a HUGE margin the best OpenCL performance. Again, it can increase the speed of whatever you are doing

sooo ... what is better?  :huh:

[Archangel1994]

sooo ... what is better?  :huh:

Depends on which program you use though most support both nowadays. 

[MatejAustria]

Depends on which program you use though most support both nowadays. 

do you know some examples?

[trag1c]

They both do the same thing. They're both for general purpose computations that can take advantage of very high degrees of parallelism. The difference is CUDA is proprietary so it can only be used on Nvidia GPU's where as OpenCL can run on anything that implements the specification. As for which is better I don't know but I would imagine that OpenCL would be more advantageous since it can run on almost any GPU.  An example of this is the Bullet physics library which uses OpenCL to run physics computations.