On Wed, Feb 3, 2010 at 3:01 AM, Vladimir Sokolovsky <[email protected]> wrote: > Sean Hefty wrote: >>> >>> Will Mellanox be adding this option to the IB spec rather than keep it >>> as vendor proprietary ? >> >> Along with that question, what is the use case for this feature? The only >> benefit mentioned was saving a few bytes of memory, at the cost of >> carrying >> extra network headers. Atomics are only 64-bits to begin with... >> > > > For some applications the memory savings are very significant. One > example is fine grain lock implementations for huge data sets. In other > cases, the benefit is the ability to update multiple fields with a > single io operation.
What happens when the other end doesn't support this feature (new opcodes) ? How can that be determined remotely ? Is some CM related change also needed ? -- Hal > > Regards, > Vladimir > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
