[mvapich-discuss] Use of mvapich with Ethernet

[Panda, Dhabaleswar]

Which 1Gb adapter with RDMAoE you are planning to use? Currently, the RoCE support in
MVAPICH2 and MVAPICH2-X are supported for Mellanox Adapters only.

DK
________________________________
From: mvapich-discuss-bounces at cse.ohio-state.edu on behalf of Sashi Balasingam [sashibala2 at yahoo.com]
Sent: Thursday, March 12, 2015 12:47 AM
To: mvapich-discuss at cse.ohio-state.edu
Subject: [mvapich-discuss] Use of mvapich with Ethernet

I am planning on using a 1 Gb Ethernet connection with mvapich 2.x for a multi-node compute cluster with up to 200 cores collectively. Just a few quick questions -

1. Does any of the recent mvapich support RDMAoE with 1 Gb Ethernet links, or is it only with 10 GbE ?
2. Are the MPI broadcast primitives, such as MPI_Bcast(), MPI_Scatterv(), are reliable for usage in this config ?

3. Would the latest mvapich be the best choice for deployment ?

4. Any issues with MPI usage, when 'binding' two 1 GbE, within a node, for higher bandwidth >

Appreciate any related responses.

Bala
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