I would recommend you to read OFED (or Mellanox OFED) documentation. It will be
good start point.
Regards,
Pavel (Pasha) Shamis
---
Application Performance Tools Group
Computer Science and Math Division
Oak Ridge National Laboratory
On Mar 14, 2011, at 4:37 PM, Bernardo F Costa wrote:
> O
On Mar 14, 2011, at 4:37 PM, Bernardo F Costa wrote:
> I've tried ibdiagnet and other ofed tools. I also tried to debug the
> network environment with simple jobs to measure bandwidth and latency.
> In most cases, I've seen high peaks of measures who come and go
> without any reason I could catch
On Monday, March 14, 2011 09:37:54 pm Bernardo F Costa wrote:
> Ok. Native ibverbs/openib is preferable although cannot be used by all
> applications (those who do not have a native ip interface).
Applications (in this context at least) uses the MPI interface. MPI in general
and OpenMPI in pertic
Ok. Native ibverbs/openib is preferable although cannot be used by all
applications (those who do not have a native ip interface). I suppose
that if I configure my network nodes to use ipoib (by simply probing
ib_ipoib module) I'd still be able to use native ibverbs interface
without any delay caus
Please see my comment below.
Pavel (Pasha) Shamis
---
Application Performance Tools Group
Computer Science and Math Division
Oak Ridge National Laboratory
On Mar 11, 2011, at 2:47 PM, Bernardo F Costa wrote:
> I have found this thread form two years ago. I am some kind of lost on
> configuring
I have found this thread form two years ago. I am some kind of lost on
configuring an infiniband cluster for openmpi. What is best: use iboip
or use native infiniband ibverbs interface ? For now I am using native
infiniband withou ipoib. But I have lots of problems specially with
latency in the clu
You might also want to ensure that your Open MPI was built with
OpenFabrics support (i.e., to use verbs directly instead of IPoIB).
Try this:
ompi_info | grep openib
If that returns a line with "openib" and "btl" in it, then your Open
MPI has OpenFabrics support (we named the plugin "o
On 11/25/09 02:04, Vivek Satpute wrote:
Hi,
I tried to execute OpenMPI examples from OFED-1.4 stack and found that
all those
examples uses IPoIB.
How are you determining that it is using IPoIB?
Is there any way to execute MPI applications on only Infiniband stack
i.e. without
using IPoIB
Hi,
I tried to execute OpenMPI examples from OFED-1.4 stack and found that all
those
examples uses IPoIB.
Is there any way to execute MPI applications on only Infiniband stack i.e.
without
using IPoIB module ?
Can we execute MPI applications using libibverbs, librdma, or some other
libraries ?
