Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread Bruno Coutinho
2010/4/5 David Mathog > > over the years i've been using netgear enterprise and home products, > > they are wonderful in light use 80-85% max throughput, but once you > > hit the 90+ areas they seem to start to degrade either through packet > > loss or over heating > > OK, Netgear is officially s

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread Skylar Thompson
On 4/5/2010 1:27 PM, Michael Di Domenico wrote: > A couple small 10node clusters we have setup used to routinely drop > off the network and the switch would have to be hard reset for it to > return. Granted we didn't do any deep analysis (just replaced with > cisco) and it could be attributed to s

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread Jesse Becker
On Mon, Apr 05, 2010 at 06:01:41PM -0400, David Mathog wrote: over the years i've been using netgear enterprise and home products, they are wonderful in light use 80-85% max throughput, but once you hit the 90+ areas they seem to start to degrade either through packet loss or over heating OK, N

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread David Mathog
> over the years i've been using netgear enterprise and home products, > they are wonderful in light use 80-85% max throughput, but once you > hit the 90+ areas they seem to start to degrade either through packet > loss or over heating OK, Netgear is officially scratched off the list. Two votes f

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread Michael Di Domenico
A couple small 10node clusters we have setup used to routinely drop off the network and the switch would have to be hard reset for it to return. Granted we didn't do any deep analysis (just replaced with cisco) and it could be attributed to some bad switches, but i've also seen this at home with s

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread David Mathog
Michael Di Domenico > I would have to agree. I have Netgears in my lab now and for light > use they seem to be okay, but once you run a communications heavy MPI > job over them they seem to fall down Please define "fall down". One test I have applied to a switch (only 100baseT) to see if it coul

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread Joe Landman
Michael Di Domenico wrote: I would have to agree. I have Netgears in my lab now and for light use they seem to be okay, but once you run a communications heavy MPI job over them they seem to fall down I seem to remember that the Dell switches are rebadged SMC or Netgear units. They are great

Re: [Beowulf] which 24 port unmanaged GigE switch?

2010-04-05 Thread Michael Di Domenico
I would have to agree. I have Netgears in my lab now and for light use they seem to be okay, but once you run a communications heavy MPI job over them they seem to fall down On Fri, Apr 2, 2010 at 5:32 PM, Joe Landman wrote: > David Mathog wrote: >> >> Which of these would be good for a cluster?