`python test_low_latency.py` blocked in H20

[cll24]

By analyzing the code, we find the code is blocked in the instantiation of buffer

We got the following log when setting "NVSHMEM_DEBUG=INFO"

What does the Error "cudaErrorInvalidValue 1 cudaErrorInvalidSymbol 13 cudaErrorInvalidMemcpyDirection 21 cudaErrorNoKernelImageForDevice 209" mean? Is it the root cause of process blocking.

Here is the configuration of NVSHMEM

[sphish]

The log line cudaErrorInvalidValue 1 cudaErrorInvalidSymbol 13 cudaErrorInvalidMemcpyDirection 21 cudaErrorNoKernelImageForDevice 209 is a normal log in the NVSHMEM.

I suggest you use gdb to print the backtrace when the test processes hang.