Error: VTARuntimeShutdown symbol is undefined

Troubleshooting
#1

Hi, I tried some tutorials(deploy_detection, deploy_classification, etc) using PYNQ Z1 Board.

However, I got the same problem for all the tutorials I ran, on RPC server.

 File "/home/xilinx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 78, in cfun
    rv = local_pyfunc(*pyargs)
  File "/home/xilinx/tvm/vta/python/vta/exec/rpc_server.py", line 84, in server_shutdown
    runtime_dll[0].VTARuntimeShutdown()
  File "/usr/lib/python3.6/ctypes/__init__.py", line 361, in __getattr__
    func = self.__getitem__(name)
  File "/usr/lib/python3.6/ctypes/__init__.py", line 366, in __getitem__
    func = self._FuncPtr((name_or_ordinal, self))
AttributeError: /home/xilinx/tvm/vta/python/vta/../../../build/libvta.so: undefined symbol: VTARuntimeShutdown

I searched this Error and found this error was recently solved on VTA build and execution error with new 3rdparty vta-hw, but still I have the error.

My OS’s PYNQ v2.5, and I use the latest commit of TVM(a072da0588c542757d2815832b7f010f530b2428)

I would really appreciate if someone let me know why the error happened. Is there anyone who solved this error?

#2

Have you confirmed that both TVM installs (on pynq and on your host) are up to date?

#3

Yes, both TVM are the same version(a072da0588c542757d2815832b7f010f530b2428), which is updated May 28, 2020.

#4

Ok, I’ll try to reproduce the tutorial on the latest TVM. Did you get the bug after updating TVM, or did you install from a fresh git clone?

#5

I installed both TVM from a fresh git clone

Thank you for your attention!

#6

I am facing same issue while running vta on de10 nano. Is this bug solved yet or not?

#7

it would be great to add debug statements around the line https://github.com/apache/incubator-tvm/blob/e561007f0c330e3d14c2bc8a3ef40fb741db9004/vta/python/vta/exec/rpc_server.py#L84 to see what symbols are exposed. VTARuntimeShutdown is indeed defined in https://github.com/apache/incubator-tvm/blob/main/vta/runtime/runtime.h#L74

#8

I’ve encountered the same problem with commit ‘da42924a16c5e688bbb31facb3b17ba066b776df’ (2/2 2021)

Check the build directory, I found a ‘T’ symbol in CMakeFiles/vta.dir/vta/runtime/runtime.cc.o, but was not appeared within the final libvta.so

I tried to rerun the link command in CMakeFiles/vta.dir/link.txt, aka

‘/usr/bin/c++ -fPIC -std=c++14 -faligned-new -O2 -Wall -fPIC -shared -Wl,-soname,libvta.so -o libvta.so CMakeFiles/vta.dir/vta/runtime/device_api.cc.o CMakeFiles/vta.dir/vta/runtime/runtime.cc.o CMakeFiles/vta.dir/3rdparty/vta-hw/src/pynq/pynq_driver.cc.o -lcma’

This error disappeared.