[BUG] rpc.connect error

[tpoisonooo]

[Description]
According to Deploy the Pretrained Model on Raspberry Pi,
I have compiled the project with llvm-4.0, but deploy_model_on_rasp.py crashed on tvm/src/runtime/rpc/rpc_socket_impl.cc:47:

 47   CHECK(sock.Connect(addr))
 48       << "Connect to " << addr.AsString() << " failed";

It seems like some network error caused assertion, then I checked the commit log and revert it to e4b9f986dab8c48ba109a52106565fc4be6b67c4, recompile the project, it works well !

Please check the commit 0806b69e3fb136226fa1dafad00bd2c606cc998d carefully, here be dragons.

[Environment]
I compile tvm on macOS Mojave 10.14.2, deploy net.tar to Nvidia tx1.

[Document]
There is a spell error in Deploy the Pretrained Model on Raspberry Pi

    # target = tvm.target.create('llvm -devcie=arm_cpu -model=bcm2837 -target=armv7l-linux-gnueabihf -mattr=+neon')

device not devcie

[eqy]

Can you share some more details of your network setup? Is it IPv6 or IPv4? We will need to add a regression test for this.

[tpoisonooo]

[Evnvironment]
IPv4, normal local area network:

tx1 <------- WI-FI ------> Router <------- WI-FI ------> MacOS

Nvidia tx1 IP: 10.100.31.193
MacOS IP: 10.100.31.156

[Operation]

1. Open a MacOS terminal, login tx1, startup tvm server:

➜  awesome-department-document git:(master) ✗ ssh tx1
[email protected]'s password:
Welcome to Ubuntu 16.04 LTS (GNU/Linux 4.4.38-tegra aarch64)

 * Documentation:  https://help.ubuntu.com/

322 packages can be updated.
0 updates are security updates.

New release '18.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Mon Jan 21 08:50:29 2019 from 10.100.31.156
ubuntu@tegra-ubuntu:~$ python -m tvm.exec.rpc_server --host 0.0.0.0 --port=9090
INFO:root:If you are running ROCM/Metal, fork will cause compiler internal error. Try to launch with arg ```--no-fork```
INFO:RPCServer:bind to 0.0.0.0:9090

tx1 is reachable and it is listening 9090:

ubuntu@tegra-ubuntu:~$ netstat -anpl | grep 9090
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:9090            0.0.0.0:*               LISTEN      23861/python

2. Execute deploy_model_on_rasp.py, this python code has been changed, in accordance to aarch64 and my network setup:
   https://github.com/tpoisonooo/how-to-optimize-gemm/blob/master/deploy_model_on_rasp.py

If this bug cannot reappear stably, please tell me the log you need.

[eqy]

Great, thanks. I have a macOS machine and will try to reproduce this tomorrow.

[eqy]

I have reproduced the bug, it seems to be related to the wrong size being passed into Connect, will submit a PR later today.

[eqy]

A fix is in #2484 that you can try. Unfortunately due to another issue in CI (#2480, #2482), CI and merging of the fix into mainline might be a little delayed.

[eqy]

Also, feel free to submit a PR for the spelling fix.

[tpoisonooo]

By the way, what is the meaning of "PR" ?

[eqy]

(pull request)