Wait on short type?

[manjugv]

void shmem_wait_until(TYPE *ivar, int cmp, TYPE cmp_value);

Please see page 112 in the OpenSHMEM v1.5 document. It seems like by referring to Table 6, we are deprecating the wait on type short and unsigned short, was this intentional?

[manjugv]

@naveen-rn @nspark

[davidozog]

I seem to recall it was intentionally deprecated (see pg. 160 - Section F.2.16), because shmem_wait and shmem_test are only compatible with AMOs, and short and unsigned short are not compatible AMO types.

Also isn't it true that some transports (e.g. UCX, ibv) don't have direct support for 16-bit atomics?

[nspark]

Yes, It was an intentional deprecation. @davidozog hits the rationale on point. I also see this as part of our incremental progress toward defining a memory model.

In my recent explorations with UCX, I recall it only exposes 32- and 64-bit AMOs.

[naveen-rn]

Agreed - this was an intentional deprecation. AFAIU, there are no 16b AMOs and since only waits and tests are compatible with AMOs and PWS - we decided to deprecate shorts.

[nspark]

@manjugv Is this good to close?