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.. This file is included by building-open-mpi.rst
.. _install-network-support-label:
Networking support / options
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The following are command line options for various network types that
can be used with ``configure``:
* ``--with-fca=DIR``:
Specify the directory where the Mellanox FCA library and
header files are located.
FCA is the support library for Mellanox switches and HCAs.
* ``--with-hcoll=DIR``:
Specify the directory where the Mellanox hcoll library and header
files are located. This option is generally only necessary if the
hcoll headers and libraries are not in default compiler/linker
search paths.
hcoll is the support library for MPI collective operation offload on
Mellanox ConnectX-3 HCAs (and later).
* ``--with-knem=DIR``:
Specify the directory where the knem libraries and header files are
located. This option is generally only necessary if the knem headers
and libraries are not in default compiler/linker search paths.
knem is a Linux kernel module that allows direct process-to-process
memory copies (optionally using hardware offload), potentially
increasing bandwidth for large messages sent between messages on the
same server. See `the Knem web site
<https://knem.gitlabpages.inria.fr/>`_ for details.
* ``--with-libfabric=DIR``:
Specify the directory where the OpenFabrics Interfaces ``libfabric``
library and header files are located. This option is generally only
necessary if the libfabric headers and libraries are not in default
compiler/linker search paths.
Libfabric is the support library for OpenFabrics Interfaces-based
network adapters, such as Cisco usNIC, Intel True Scale PSM, Cray
uGNI, etc.
* ``--with-libfabric-libdir=DIR``:
Look in directory for the libfabric libraries. By default, Open MPI
will look in ``DIR/lib`` and ``DIR/lib64``, which covers most cases.
This option is only needed for special configurations.
* ``--with-portals4=DIR``:
Specify the directory where the Portals4 libraries and header files
are located. This option is generally only necessary if the Portals4
headers and libraries are not in default compiler/linker search
paths.
Portals is a low-level network API for high-performance networking
on high-performance computing systems developed by Sandia National
Laboratories, Intel Corporation, and the University of New Mexico.
The Portals 4 Reference Implementation is a complete implementation
of Portals 4, with transport over InfiniBand verbs and UDP.
* ``--with-portals4-libdir=DIR``:
Location of libraries to link with for Portals4 support.
* ``--with-portals4-max-md-size=SIZE`` and
``--with-portals4-max-va-size=SIZE``:
Set configuration values for Portals 4
* ``--with-psm=<directory>``:
Specify the directory where the QLogic InfiniPath / Intel True Scale
PSM library and header files are located. This option is generally
only necessary if the PSM headers and libraries are not in default
compiler/linker search paths.
PSM is the support library for QLogic InfiniPath and Intel True Scale
network adapters.
* ``--with-psm-libdir=DIR``:
Look in directory for the PSM libraries. By default, Open MPI will
look in ``DIR/lib`` and ``DIR/lib64``, which covers most cases. This
option is only needed for special configurations.
* ``--with-psm2=DIR``:
Specify the directory where the Intel Omni-Path PSM2 library and
header files are located. This option is generally only necessary
if the PSM2 headers and libraries are not in default compiler/linker
search paths.
PSM is the support library for Intel Omni-Path network adapters.
* ``--with-psm2-libdir=DIR``:
Look in directory for the PSM2 libraries. By default, Open MPI will
look in ``DIR/lib`` and ``DIR/lib64``, which covers most cases. This
option is only needed for special configurations.
* ``--with-ucx=DIR``:
Specify the directory where the UCX libraries and header files are
located. This option is generally only necessary if the UCX headers
and libraries are not in default compiler/linker search paths.
* ``--with-ucx-libdir=DIR``:
Look in directory for the UCX libraries. By default, Open MPI will
look in ``DIR/lib`` and ``DIR/lib64``, which covers most cases. This
option is only needed for special configurations.
* ``--with-usnic``:
Abort configure if Cisco usNIC support cannot be built.
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