Dear Community!
at the moment we expand our cluster. We started with ~22 Nodes and a SX6036. Even if the nodes
are connected only via QDR. Now new nodes should be integrated and following the fat tree
topology I plan to buy new switches. But now some questions come up.
1. For a non blocking configuration with less or equal 36 nodes is it better to stay with one switch, or
are there any technical reasons to have one level 2 switch and two level 1 switches?
2. I plan to use the SX6036 as level 2 switch and to add a SX6025 as second level 2 switch.
as leaf switches I want to use four IS5025, because the nodes are limited to QDR. For the
future i may want to add FDR capable switches/nodes. Sounds this setup reasonable to you?
3. Are there any special cables/tricks to connect the switches, or have I to take 18
single cables from leaf switch to level 2 switches?
best regards!
Sven