clarify libfabric dependency about fabtsuite

[carns]

Here is the spack environment file that I am using to test against the platform default libfabric on Polaris is pasted below.

To use it, do something like:

# save listing as fabtsuite-polaris.yaml
# edit the repos: entry to point to the directory where your copy of mochi-spack-packages is
> spack env create fabtsuite-polaris fabtsuite-polaris.yaml
> spack env activate fabtsuite-polaris
# this final step will fail due to the dependency check on libfabric in cmake
> spack install

# This is a Spack Environment file.
#
# It describes a set of packages to be installed, along with
# configuration settings.
spack:
  # add package specs to the `specs` list
  specs:
  - fabtsuite ^[email protected]
  view: true
  repos:
  - /home/carns/working/src/mochi/mochi-spack-packages
  modules:
    prefix_inspections:
      lib: [LD_LIBRARY_PATH]
      lib64: [LD_LIBRARY_PATH]
  compilers:
  - compiler:
      spec: [email protected]
      paths:
        cc: cc
        cxx: CC
        f77: ftn
        fc: ftn
      flags: {}
      operating_system: sles15
      target: any
      modules:
      - PrgEnv-gnu
      - gcc/11.2.0
      - libfabric
      - cudatoolkit-standalone
      environment: {}
      extra_rpaths: []
  packages:
    all:
      providers:
        mpi: [ cray-mpich ]
      compiler:
      - [email protected]
      target:
      - zen3
      version: []
      buildable: true
    cray-mpich:
      buildable: false
      version: []
      target: []
      compiler: []
      providers: {}
      externals:
      - spec: [email protected] arch=cray-sles15-zen3
        modules:
        - cray-mpich/8.1.16
    mercury:
      variants: ~boostsys ~checksum
      buildable: true
      version: []
      target: []
      providers: {}
      compiler: []
    libfabric:
      externals:
      - spec: [email protected]
        modules:
        - libfabric/1.11.0.4.125
      buildable: true
      version: []
      target: []
      providers: {}
      compiler: []
    autoconf:
      buildable: false
      version: []
      target: []
      compiler: []
      providers: {}
      externals:
      - spec: [email protected]
        prefix: /usr
    automake:
      buildable: false
      version: []
      target: []
      compiler: []
      providers: {}
      externals:
      - spec: [email protected]
        prefix: /usr
    cmake:
      buildable: false
      version: []
      target: []
      compiler: []
      providers: {}
      externals:
      - spec: [email protected]
        modules:
        - cmake/3.23.2
    libtool:
      buildable: false
      version: []
      target: []
      compiler: []
      providers: {}
      externals:
      - spec: [email protected]
        prefix: /usr
    openssl:
      buildable: false
      version: []
      target: []
      compiler: []
      providers: {}
      externals:
      - spec: [email protected]
        prefix: /usr
    m4:
      externals:
      - spec: [email protected]
        prefix: /usr

[hyoklee]

@gnuoyd , can you answer this? I don't know why v. > 1.13 is strictly required.

[hyoklee]

If I use Polaris system libfabric 1.11, the default test hangs.