Re: [OMPI devel] Device failover on ob1

2009-08-02 Thread Ralph Castain
Okay - here's a thought. Why not do what the original message asked? Checkout their changes and look at what they did. Then we can have the discussion about how intrusive it is. Otherwise, all we're doing is debating what they -might- have done, or what someone thinks they -should- have don

Re: [OMPI devel] Device failover on ob1

2009-08-02 Thread Graham, Richard L.
The point here is very different, and is not being made because of objections for fail-over support. Previous work took precisely this sort of approach, and in that particular case the desire to support reliability, but be able to compile out this support still had a negative performance imp

Re: [OMPI devel] Device failover on ob1

2009-08-02 Thread Ralph Castain
The objections being cited are somewhat unfair - perhaps people do not understand the proposal being made? The developers have gone out of their way to ensure that all changes are configured out unless you specifically select to use that functionality. This has been our policy from day one

Re: [OMPI devel] Device failover on ob1

2009-08-02 Thread Graham, Richard L.
On 8/2/09 12:55 AM, "Brian Barrett" wrote: While I agree that performance impact (latency in this case) is important, I disagree that this necessarily belongs somewhere other than ob1. For example, a zero-performance impact solution would be to provide two versions of all the interface functi

Re: [OMPI devel] Device failover on ob1

2009-08-02 Thread Brian Barrett
While I agree that performance impact (latency in this case) is important, I disagree that this necessarily belongs somewhere other than ob1. For example, a zero-performance impact solution would be to provide two versions of all the interface functions, one with failover turned on and one