lichen11 commented on issue #13859: Newly updated Makefile generate path errors URL: https://github.com/apache/incubator-mxnet/issues/13859#issuecomment-461555956 Thanks. I removed the folders and installed new mxnet. I am following the example https://mxnet.incubator.apache.org/versions/master/tutorials/r/mnistCompetition.html but I trained with two GPUs using model <- mx.model.FeedForward.create(lenet, X=train.array, y=train.y, ctx=list(mx.gpu(0), mx.gpu(1)), num.round=100, array.batch.size=100, learning.rate=0.05, momentum=0.9, wd=0.00001, eval.metric=mx.metric.accuracy, epoch.end.callback=mx.callback.log.train.metric(100)) I received the following error: Auto-select kvstore type = local_update_cpu Start training with 2 devices Error in kvstore$set.optimizer(optimizer) : kvstore.cc:124: RCheck failed: names.size() == 2 && names[0] == "create.state" && names[1] == "update" Invalid optimizer I checked using either GPU, I am able to run the code without error. Does mxnet R automatically support multiple GPUs?
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