[Bug] VTA RPC Error

[zhongwujie]

Environment

• FPGA board: PYNQ Z2
• TVM commit: 6ae2961
• Host sytem: Ubuntu 22.04.4 LTS

Steps to reproduce

I follow the guidance in the VTA document, and I have built twice in the PYNQ Z2 board. However, when I run rpc test program, it raises an error. The followings are the commands and outputs:

PYNQ Z2 board:

• The command is

sudo ./apps/vta_rpc/start_rpc_server.sh

The output is

  2024-08-10 10:53:28.909 INFO bind to 0.0.0.0:9091
  2024-08-10 10:53:30.803 INFO connected from ('10.42.0.1', 59304)
  2024-08-10 10:53:30.807 INFO start serving at /tmp/tmp8393yprq
  2024-08-10 10:53:32.691 INFO finish serving ('10.42.0.1', 59304)

The host

• The command is

python vta/tests/python/pynq/test_program_rpc.py

• The output is

Traceback (most recent call last):
  File "/home/zhong/code/frameworks/tvm_test/vta/tests/python/pynq/test_program_rpc.py", line 46, in <module>
    program_rpc_bitstream()
  File "/home/zhong/code/frameworks/tvm_test/vta/tests/python/pynq/test_program_rpc.py", line 36, in program_rpc_bitstream
    program_fpga(remote, path)
  File "/home/zhong/code/frameworks/tvm_test/vta/python/vta/rpc_client.py", line 66, in program_fpga
    fprogram(os.path.basename(bitstream))
  File "/home/zhong/code/frameworks/tvm_test/python/tvm/_ffi/_ctypes/packed_func.py", line 240, in __call__
    raise_last_ffi_error()
  File "/home/zhong/code/frameworks/tvm_test/python/tvm/_ffi/base.py", line 481, in raise_last_ffi_error
    raise py_err
tvm.error.RPCError: Traceback (most recent call last):
  5: tvm::runtime::RPCWrappedFunc::operator()(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue*) const
  4: tvm::runtime::RPCClientSession::CallFunc(void*, TVMValue const*, int const*, int, std::function<void (tvm::runtime::TVMArgs)> const&)
  3: tvm::runtime::RPCEndpoint::CallFunc(void*, TVMValue const*, int const*, int, std::function<void (tvm::runtime::TVMArgs)>)
  2: tvm::runtime::RPCEndpoint::HandleUntilReturnEvent(bool, std::function<void (tvm::runtime::TVMArgs)>)
  1: tvm::runtime::RPCEndpoint::EventHandler::HandleProcessPacket(std::function<void (tvm::runtime::TVMArgs)>)
  0: tvm::runtime::RPCEndpoint::EventHandler::HandleReturn(tvm::runtime::RPCCode, std::function<void (tvm::runtime::TVMArgs)>)
  File "/home/zhong/code/frameworks/tvm_test/src/runtime/rpc/rpc_endpoint.cc", line 439
RPCError: Error caught from RPC call:

note

• In the PYNQ Z2 borad, I turn off the gtest in the config.cmake file, because it raises an error. I think it doesn't matter.

Triage

• needs-triage