RHEL SBSA Build

[fpetrini15]

Goal: Incorporate SBSA builds/tests and extended the smoke tests for x86 and SBSA to include L0_sequence_batcher.

Server changes: triton-inference-server/server#7595
PyTorch Backend changes: triton-inference-server/pytorch_backend#139
TensorFlow Backend changes: triton-inference-server/tensorflow_backend#106

[nv-kmcgill53]

1. Seems like an anti-pattern to have multiple arches in a PATH variable but this is also concise. Maybe add a comment making note that if any other paths need to be added, this should be split.

2. Does this overwrite any CMAKE_PREFIX_PATHs which are added on the command line?

[fpetrini15]

1. Circling back on this, I don't like the approach either. I'll set it conditionally.
2. Good catch!

# results when running with command line arg "-DCMAKE_PREFIX_PATH:STRING=/hello;/world"
foreach(PATH ${CMAKE_PREFIX_PATH})
  message("PATH: ${PATH}")
endforeach()

# before:
PATH: /usr/local/cuda/targets/x86_64-linux/lib

# after:
PATH: /hello
PATH: /world
PATH: /usr/local/cuda/targets/x86_64-linux/lib

[mc-nv]

Semicolon-separated list of directories specifying installation prefixes to be searched by the find_package(), find_program(), find_library(), find_file(), and find_path() commands. Each command will add appropriate subdirectories (like bin, lib, or include) as specified in its own documentation.

1. In other words if you don't mess with providers, and not planing to provide different architecture CMake will not mess up with dependencies.
   
   There why suppose condition will be redundant by serving same purpose.

2. Given argument from command line should extend not override configuration within CMAKE.

[fpetrini15]

Are you suggesting that we disallow users from setting this variable at all and go back to overwriting it?

e.g., aarch64: set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} "/usr/local/cuda/targets/sbsa-linux/lib")

I can't say that if feels right to do that. If a user is building in their own environment, they should be able to set this variable as-needed.