[mvapich-discuss] Use of mvapich with Ethernet

[Sashi Balasingam]

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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