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Subject: Re: [OMPI users] mpi_leave_pinned is dangerous
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2012-11-08 08:51:38

Not sure. I will look into this. And thank you for the feedback Jens!

>-----Original Message-----
>From: users-bounces_at_[hidden] [mailto:users-bounces_at_[hidden]]
>On Behalf Of Jeff Squyres
>Sent: Thursday, November 08, 2012 8:49 AM
>To: Open MPI Users
>Subject: Re: [OMPI users] mpi_leave_pinned is dangerous
>On Nov 7, 2012, at 7:21 PM, Jens Glaser wrote:
>> With the help of MVAPICH2 developer S. Potluri the problem was isolated
>and fixed.
>Sorry about not replying; we're all (literally) very swamped trying to prepare
>for the Supercomputing trade show/conference next week. I know I'm
>waaaay behind on OMPI user mails; sorry folks. :-(
>> It was, as expected, due to the library not intercepting the
>> cudaHostAlloc() and cudaFreeHost() calls to register pinned memory, as
>would be required for the registration cache to work.
>Rolf/NVIDIA -- what's the chance of getting that to be intercepted properly?
>Do you guys have good hooks for this? (HINT HINT :-) )
>Jeff Squyres
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