[mpiwg-p2p] Next meeting: 19th January 2015 11am Central US
dholmes at epcc.ed.ac.uk
Fri Jan 16 06:34:36 CST 2015
The next point-to-point teleconference will be on Monday 19th January
2015 at 11am Central US via webex.
Connection details are on the point-to-point wiki page:
1) New INFO keys - specifically the "can INFO keys change the semantic
behaviour of MPI?" issue (see summary from Jim below)
2) Progress on Arecv and Fsend
3) Other stuff?
On 12/01/2015 15:39, Jim Dinan wrote:
> Hi All,
> Apologies for missing the meeting. There was a lot of discussion at
> the Forum about the validity of restricting the application's behavior
> using info keys (or, if you prefer, the application asserting its
> behavior through info keys). Folks indicated that this qualifies as a
> semantic change for the given communicator, which is forbidden by
> Section 6.4.4 and made more complicated because MPI_Comm_dup
> propagates info keys.
> In response to this feedback, I started working on a straw man
> communicator assertions interface that would allow the application to
> assert what its behavior will be. I will prepare this for discussion
> at a future WG meeting.
> In parallel, I have had discussions with others who feel that the
> opinion expressed at the Forum meeting is incorrect; that it should be
> valid to provide hints on application behavior through info keys.
> At the same time, the straw vote at the December meeting indicated
> that the Forum as a whole would like to pursue this capability for the
> MPI standard. So, much more discussion and debate is needed. Looking
> forward to it,
Applications Consultant in HPC Research
EPCC, The University of Edinburgh
James Clerk Maxwell Building
The Kings Buildings
Peter Guthrie Tait Road
T: +44(0)131 651 3465
E: dholmes at epcc.ed.ac.uk
*Please consider the environment before printing this email.*
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
More information about the mpiwg-p2p