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How does NVCaffe MultiGPU Solver Works? #54
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Hello,
I saw each GPU is assigned a solver; however, I 'm not sure how do you average the gradients from multiGPUs. Is it at each iterations, every GPU fetch the images of batch/GPUs and compute the gradient. Then the root solver retrieve the rest of gradients and average together. Then it goes to the next iteration. Is it correct? Thank you
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