I was able to run mvapich2 osu benchmarks with xrc support using the following
options:
configure --with-rdma=gen2 --enable-xrc=yes CFALGS='-DOFED_VERBS -D_ENABLE_XRC'
export MV2_USE_SHARED_MEM=0
export MV2_USE_XRC=1
Testing revealed a couple of issues in the libraries and kernel patches. All
Hi Sean,
I am pleased that you are putting in the effort to enable the existing OFED
user base to continue using its
code without changes to the XRC calls.
Regarding XRC and MPI, see below.
On Wednesday 13 July 2011 20:21, Hefty, Sean wrote:
I was able to build and run mvapich2 successfully
Sean pinged me last night about XRC in Open MPI last night (note that I am no
longer on the linux-rdma list).
Open MPI uses XRC, but in a non-default manner -- the user has to specifically
ask for it at run time.
On Jul 14, 2011, at 9:13 AM, Jack Morgenstein wrote:
Hi Sean,
I am pleased
On Thursday 14 July 2011 16:39, Dhabaleswar Panda wrote:
Both MVAPICH1 and MVAPICH2 have XRC support for many years and are being
used by many large-scale production clusters.
Sorry about that!
My bad.
-Jack
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the body
Sean,
Both MVAPICH1 and MVAPICH2 have XRC support for many years and are being
used by many large-scale production clusters.
For MVAPICH1, this support is available in both the standard Gen2
interface and the Hybrid (UD-RC/XRC) interface.
From MVAPICH1 user guide (sec 4.4.1), you can find the
Both MVAPICH1 and MVAPICH2 have XRC support for many years and are being
used by many large-scale production clusters.
To clarify my comment:
--with-rdma=gen2 CFLAGS='-DOFED_VERBS -D_ENABLE_XRC_
It didn't appear that mvapichs ever used XRC
I only meant that mvapich2 didn't invoke any
This patch allows libibverbs to support both libibverbs API that shipped with
OFED 1.5 and the upstream libibverbs API. This supports existing apps
that are compiled against the upstream libibverbs (ibverbs). And in ideal
cases, an application coded to the OFED version of libibverbs (ofverbs)
