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README: update the Portals4 description #560

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README: update the Portals4 description #560

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8 changes: 5 additions & 3 deletions README
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Expand Up @@ -885,9 +885,11 @@ NETWORKING SUPPORT / OPTIONS
headers and libraries are not in default compiler/linker search
paths.

Portals4 is the support library for Cray interconnects, but is also
available on other platforms (e.g., there is a Portals4 library
implemented over regular TCP).
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=<directory>
Location of libraries to link with for Portals4 support.
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