multithreading - OpenGL on GPU: how many concurrent threads in total? -


in question "cuda: how many concurrent threads in total?", says:

the gtx 580 can have 16 * 48 concurrent warps (32 threads each) running @ time. 16 multiprocessors (sms) * 48 resident warps per sm * 32 threads per warp = 24,576 thread

i curious: opengl , same gpu, can say: same number of threads (and in understanding, 1 thread processes 1 pixel in texture) concurrently?

if not, number? how many pixels in texture can processed @ same time?

and if opengl on gpu can have say, 10000 concurrent threads. if have 10000 pixels in 1 texture, , 20000 pixels in texture, can say: texture of 20000 pixels need approximately 2 times of processing time texture of 10000 pixels (regardless of overhead of loading shaders etc)?


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