jeremiedb commented on issue #5296: KVStore error with certain optimizer settings - R-package URL: https://github.com/apache/incubator-mxnet/issues/5296#issuecomment-461651515 I think the concern would be about potential communication bottleneck: as I understand the message, there might not be a direct PCI communication between your GPUs. Do you observe a significant speedup from 1 to 2 GPUs?
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