[Mina William Morcos]

Hi. I encountered the same issue. I used bastion host 2, and that fixed it. Might be an issue with bastion host 1.

You can just edit this line below in the fabric_rc file, and restart the kernel of the notebook. Just change the “1” to “2”.

export FABRIC_BASTION_HOST=bastion-2.fabric-testbed.net

[Mina William Morcos]

You can use fablib.delete_slice(slice_name). It takes the slice name. You can also give it the slice ID, like so: fablib.delete_slice(slice_id=slice_id).

There is a notebook in the fablib_api folder called delete_slice. It can be helpful.

[Mina William Morcos]

FABRIC has recently migrated to Google Cloud. Might this be because of the recent migration? Not sure. If so, then this issue may not happen again if you reserve a new slice.

[Mina William Morcos]

It seems that there’s an issue with file upload on the forum, so here are the files: https://github.com/842Mono/Bandwidth_Test_Notebooks .

[Mina William Morcos]

Hello.

I was able to get 70Gbps on a same-site experiment (first notebook attached), and 19Gbps on different-site experiments (second and third notebooks attached). The fourth notebook just has a simple UI bit of code that might be helpful for you to modify the parameters and plot the results on the graph.

Below are the tuning parameters that I use.

net.core.rmem_max = 2147483647
net.core.wmem_max = 2147483647
net.ipv4.tcp_rmem = 4096 87380 2147483647
net.ipv4.tcp_wmem = 4096 65536 2147483647
net.ipv4.tcp_congestion_control = htcp
net.ipv4.tcp_mtu_probing = 1
net.core.default_qdisc = fq

I use 32 parallel streams, and the largest window size I can get, like so: -P 32 -w 999M. I use iperf, not iperf3. I tried to get the 70Gbps result on iperf3 before, but no luck.

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