Re: [SSI-users] ssi on podcast

[Brock P. <br...@um...>]

On Aug 26, 2012, at 3:16 PM, Vincent Diepeveen wrote:

> OpenSSI doesn't work at HPC machines as it doesn't support Infiniband nor other HPC type connections.

You are making the assumption that HPC only means massive parallel MPI jobs or large OpenMP jobs.  On the other hand I know of a group on campus that just needs to run many serial jobs and uses Mosix as their platform on a few hundred cores.  What is the difference between 1000 core parallel job, and 1000 serial jobs?  

Our local HPC resource that I admin is 12000 cores and only about half of it has IB, the rest is Ethernet.

> 
> AFAIK it just supports TCP.
> Furthermore it's total outdated and not maintained.

This would be a problem and thus makes it non-useful for new adopters of the software?  We can pass on OpenSSI if it is dead.

> 
> As for true SSI it also lacks crucial features like memory migration of shared memory.
> Know another way to run parallel using multiple processes?
> 
> Everyone uses shared memory for that of course.

We did talk to the creator of ScaleMP, not open but this is what our listeners asked to compare OpenSSi to: http://www.rce-cast.com/Podcast/rce-65-vsmp-scalemp.html

> 
> So what do you mean with 'aimed' at HPC?

Our listener base is probably mostly admins and some users and developers mixed in there. We like informing them of anything that could help them in their job.

> 
> That's a different league you know...
> 
> On Aug 26, 2012, at 8:49 PM, Brock Palen wrote:
> 
>> We host a podcast aimed at the HPC community at rce-cast.com
>> 
>> We had some listeners request that we cover OpenSSI on the show.
>> Is this something a developer or two of OpenSSi would be interested in doing?  If so contact me off list and we can set this up.  It takes about an hour over phone or VoiP.
>> 
>> If you have any suggestion for show topics please let me know!
>> 
>> Brock Palen
>> www.umich.edu/~brockp
>> CAEN Advanced Computing
>> br...@um...
>> (734)936-1985
>> 
>> 
>> 
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