Hello, You should be able to ssh to the nodes from each other. It looks like you cannot ssh between the nodes using the below IP addresses. -- Pavan On 01/17/2013 06:08 PM US Central Time, Na Zhang wrote:

Hello Dave,

Thanks for your reply. We followed your advice and installed Hydra on each node.

We specify ip address in hosts file. For example:

shell $ mpiexec �f hosts �np 2 ./app shell $ cat hosts 192.168.0.1 192.168.1.1

(The two node IP belongs to 2 different subnets: for example, subnet #1 192.168.0.0/24 <http://192.168.0.0/24> and subnet #2: 192.168.1.0/24 <http://192.168.1.0/24>)

The error out put is �ssh connect to host 192.168.1.1 port 22: connection time out�.

So is there a option for Hydra to solve this problem?

Thank you!

Sincerely, Na Zhang

On Fri, Jan 11, 2013 at 5:20 PM, <[email protected] <mailto:[email protected]>> wrote:

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Today's Topics:

1. Re: [PATCH] Use attribute layout_compatible for pair types (Jed Brown) 2. Re: [PATCH] Use attribute layout_compatible for pair types (Dmitri Gribenko) 3. start MPD daemons on 2 different subnets (Na Zhang) 4. Re: start MPD daemons on 2 different subnets (Dave Goodell) 5. Fatal error in PMPI_Reduce (Michael Colonno) 6. Re: Fatal error in PMPI_Reduce (Pavan Balaji) 7. Re: Fatal error in PMPI_Reduce (Pavan Balaji)

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Message: 1 Date: Wed, 9 Jan 2013 14:00:50 -0600 From: Jed Brown <[email protected] <mailto:[email protected]>> To: [email protected] <mailto:[email protected]> Subject: Re: [mpich-discuss] [PATCH] Use attribute layout_compatible for pair types Message-ID:

<CAM9tzSnqJHaj6wbKBdAWp5YveG+UW_OWiA768GRb1spHjn+TZw@mail.gmail.com <mailto:CAM9tzSnqJHaj6wbKBdAWp5YveG%2BUW_OWiA768GRb1spHjn%[email protected]>> Content-Type: text/plain; charset="utf-8"

On Jan 9, 2013 12:56 PM, "Dmitri Gribenko" <[email protected] <mailto:[email protected]>> wrote:

> On Wed, Jan 9, 2013 at 8:19 PM, Dave Goodell <[email protected] <mailto:[email protected]>> wrote: > > Both implemented and pushed as d440abb and ac15f7a. Thanks. > > > > -Dave > > > > On Jan 1, 2013, at 11:14 PM CST, Jed Brown wrote: > > > >> In addition, I suggest guarding these definitions. Leaving these in > increases the total number of symbols in an example executable linking > PETSc by a factor of 2. (They're all read-only, but they're still there.) > Clang is smart enough to remove these, presumably because it understands > the special attributes. > > No, LLVM removes these not because of the attributes, but because > these are unused. And when they are used, most of the time they don't > have their address taken, so their value is propagated to the point > where they are read and the constants again become unused. > > I don't think GCC isn't smart enough to do the same. Do you compile > with optimization? >

Dmitri, as discussed in the other thread, it's smart enough, but only when optimization is turned on. There's no reason to needlessly make debug builds heavier than necessary. This is not a big deal either way.