Re: [OMPI users] [EXTERNAL] Re: Planned support for Intel Phis

It should - our intent is to support the Phi in both modes, so we would appreciate feedback. I'm going to post on the website FAQ some notes assembled by Tim Carlson and Michael Thomadakis about how to do it, and Nathan Hjelmn did the scif implementation, so hopefully others will chime in with s

Re: [OMPI users] [EXTERNAL] Re: Planned support for Intel Phis

Will this support native execution? I.e. MIC only, no host involvement? S -- Si Hammond Sandia National Laboratories Remote Connection -Original Message- From: Ralph Castain [r...@open-mpi.org] Sent: Sunday, February 02, 2014 09:02 AM Mountain Standard Time T

Re: [OMPI users] Planned support for Intel Phis

Support for the Phi is in the upcoming 1.7.4 release. It doesn't require any version of OFED as it uses the Phi's scif interface for communication to ranks on the local host. For communication off-host, OMPI will use whatever NICs are available On Feb 2, 2014, at 6:44 AM, Michael Thomadakis w

[OMPI users] Planned support for Intel Phis

Hello OpenMPI, I was wondering what is the support that is being implemented for the Intel Phi platforms. That is would we be able to run MPI code in "symmetric" fashion, where some ranks run on the cores of the multicore hostst and some on the cores of the Phis in a multinode cluster environment.

Re: [OMPI users] Use of __float128 with openmpi

Just go for the most trivial: MPI_Type_contiguous(sizeof(__float128), MPI_BYTE, &my__float128); A little bit more info about the optional quad-precision floating-point format is available on Wikipedia (https://en.wikipedia.org/wiki/Double-double_%28arithmetic%29#Double-double_arithmetic). Ge

Re: [OMPI users] Use of __float128 with openmpi

Hello Tim, thank you for your reply! On 01.02.2014, at 21:28, Tim Prince wrote: > Where openmpi refers to "portable C types" I would take long double to be the > 80-bit hardware format you would have in a standard build of gcc for x86_64. > You should be able to gain some insight by examining

Re: [OMPI users] Use of __float128 with openmpi

Hello Jeff, thank you a lot for your reply! On 01.02.2014, at 23:07, Jeff Hammond wrote: > See Section 5.9.5 of MPI-3 or the section named "User-Defined > Reduction Operations" but presumably numbered differently in older > copies of the MPI standard. > > An older but still relevant online refe