v6.0.x: Fortran REAL16: improve detection and wiring across OMPI/OPAL#13713
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bosilca wants to merge 1 commit intoopen-mpi:v6.0.xfrom
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v6.0.x: Fortran REAL16: improve detection and wiring across OMPI/OPAL#13713bosilca wants to merge 1 commit intoopen-mpi:v6.0.xfrom
bosilca wants to merge 1 commit intoopen-mpi:v6.0.xfrom
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Probe REAL*16 against _Float128 first, then __float128, and finally _Quad (Intel) to find a C type with matching bit representation. Ensure OPAL’s FLOAT12/FLOAT16 constructors are always available and map OMPI/MPI REAL16 based on architecture/language specifics. Wire FLOAT128 types through copy/pack/unpack paths and hook REAL16 into the base MPI_Op table. This enables software-only reductions for REAL16 for as long as the Fortran type has a C equivalent. When an OPAL type description is decided at build time (such as float12 and float16), create an OPAL-level #define with their selected size. This allow the rest of the code to simply use this size instead of trying to figure out what is the real size of the type. Signed-off-by: George Bosilca <gbosilca@nvidia.com> (cherry picked from commit 941af5e)
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Probe REAL*16 against _Float128 first, then __float128, and finally _Quad (Intel) to find a C type with matching bit representation. Ensure OPAL’s FLOAT12/FLOAT16 constructors are always available and map OMPI/MPI REAL16 based on architecture/language specifics.
Wire FLOAT128 types through copy/pack/unpack paths and hook REAL16 into the base MPI_Op table. This enables software-only reductions for REAL16 for as long as the Fortran type has a C equivalent.
When an OPAL type description is decided at build time (such as float12 and float16), create an OPAL-level #define with their selected size. This allow the rest of the code to simply use this size instead of trying to figure out what is the real size of the type.
#13612 backport for the 6.x
(cherry picked from commit 941af5e)