Messages in this thread | | | Date | Tue, 26 Feb 2008 09:21:37 +0200 | Subject | Re: [ofa-general] Re: [patch 5/6] mmu_notifier: Support for drivers with revers maps (f.e. for XPmem) | From | (Gleb Natapov) |
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On Tue, Feb 26, 2008 at 05:11:32PM +1100, Nick Piggin wrote: > > You are missing one point here. The MPI specifications that have > > been out there for decades do not require the process use a library > > for allocating the buffer. I realize that is a horrible shortcoming, > > but that is the world we live in. Even if we could change that spec, > > Can you change the spec? Not really. It will break all existing codes. MPI-2 provides a call for memory allocation (and it's beneficial to use this call for some interconnects), but many (most?) applications are still written for MPI-1 and those that are written for MPI-2 mostly uses the old habit of allocating memory by malloc(), or even use stack or BSS memory for communication buffer purposes.
-- Gleb.
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