Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: [OMPI users] infiniband with MPI
From: Joen Chen (joen_at_[hidden])
Date: 2012-07-31 00:14:10


Hi every one!

After reading the FAQ about OFED, I knew that openMPI can collaborate with
RoCE. Moreover, using the RoCE make some overhead because the underlying
network layers. In my infiniband bandwidth testing, I get the 5Gbps using
IPoIB and 12Gbps using RDMA. The performance gap is huge for my application.

My question is: Could the OpenMPI use the RDMA raw api not via network
layer?!

Best regards
Joen Chen