It's about using multiple network interfaces to exchange messages between a pair of hosts. The networks can be identical or not.

  george.

On Jun 9, 2007, at 8:19 PM, Alex Tumanov wrote:

forgive a trivial question, but what's a multi-rail?

On 6/8/07, George Bosilca <bosi...@cs.utk.edu> wrote:
A fix for this problem is now available on the trunk. Please use any
revision after 14963 and your problem will vanish [I hope!]. There
are now some additional parameters which allow you to select which
Myrinet network you want to use in the case there are several
available (--mca btl_mx_if_include and --mca btl_mx_if_exclude). Even
multi-rails should now work over MX.

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