Messages in this thread | | | Date | Tue, 26 Feb 2008 11:38:09 +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 07:52:41PM +1100, Nick Piggin wrote: > On Tuesday 26 February 2008 18:21, Gleb Natapov wrote: > > 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. > > I meant as in eg. submit changes to MPI-3 MPI spec tries to be backward compatible. And MPI-2 spec is 10 years old, but MPI-1 is still in a wider use. HPC is moving fast in terms of HW technology, but slow in terms of SW. Fortran is still hot there :)
-- Gleb.
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