On Mon, Apr 25, 2005 at 05:02:36PM -0700, Roland Dreier wrote: > The idea is that applications manage the lifetime of pinned memory > regions. They can do things like post multiple I/O operations without > any page-walking overhead, or pass a buffer descriptor to a remote > host who will send data at some indeterminate time in the future. In > addition, InfiniBand has the notion of atomic operations, so a cluster > application may be using some memory region to implement a global lock. > > This might not be the most kernel-friendly design but it is pretty > deeply ingrained in the design of RDMA transports like InfiniBand and > iWARP (RDMA over IP).
Actuallky, no it isn't. All these transports would work just fine with the mmap a character device to hand out memory from the kernel approach I told you to use multiple times and Andrew mentioned in this thread aswell. What doesn't work with that design are the braindead designed by comittee APIs in the RDMA world - but I don't think we should care about them too much. _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
