Vikas89 commented on issue #13526: distributed training van.cc Check failed URL: https://github.com/apache/incubator-mxnet/issues/13526#issuecomment-444773980 is this ec2 or your own host? please share the command you use to ssh-ing to master instance? 1/ use ssh -A to login to master 2/ on your master instance,run below command (this enables master to use your agent to login to workers) # setup ssh-forwarding. sed -i "s/^#\(\s\+\)ForwardAgent\(\s\+\)no/\ \1ForwardAgent\2yes/g" /etc/ssh/ssh_config 3/ In host file use ip address instead. if you want to launch with 1 ps and 2 worker your host file should look like: 192.168.113.227 192.168.113.228 192.168.113.229 4/use full path for host file 5/ launch with command: -s option says that use 1 server and -n is 2 worker . 1st host in host file will be server, 2nd host will be worker, 3rd host will be worker launch.py -s 1 -n 2 ........
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