lmbench tests not working inside gramine-1.8

[yashaswi2000]

Description

Hi, we are trying to run lmbench benchmarks inside gramine and started with bw_pipe test with out SGX.
setup involves the following files:
bw_pipe.c

manifest file used

# bw_pipe manifest file example
# Adjust the file paths as needed.

libos.entrypoint = "/bw_pipe"
loader.log_level = "{{ log_level }}"

# Set the dynamic library search path.
loader.env.LD_LIBRARY_PATH = "/lib:/usr/lib/x86_64-linux-gnu"

loader.insecure__use_cmdline_argv = true

# Mount the current working directory as the root filesystem.
fs.root.uri = "file:."

# Mount the Gramine runtime libraries.
fs.mounts = [
  { path = "/lib", uri = "file:{{ gramine.runtimedir() }}" },
  { path = "/usr/lib/x86_64-linux-gnu", uri = "file:/usr/lib/x86_64-linux-gnu" }
]

# SGX options.
sgx.debug = true
sgx.edmm_enable = {{ 'true' if env.get('EDMM', '0') == '1' else 'false' }}

# Mark the bw_pipe binary and runtime libraries as trusted.
sgx.trusted_files = [
  "file:bw_pipe",
  "file:{{ gramine.runtimedir() }}/",
  "file:/usr/lib/x86_64-linux-gnu/"
]

using the above setup, when we run bw_pipe it fails by not being able to create a pipe. PFA the log
back.log

what might be going wrong in this situation, thanks!

[mkow]

AFAIR we stopped using lmbench many years ago, it was unmaintained and the tests were buggy.
Here it's probably doing something with pipes in a multi-process scenario we don't support. You need to read the lmbench code and then compare with Gramine's supported features list: https://gramine.readthedocs.io/en/stable/devel/features.html.