© 2001, Myricom, Inc.
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Revision: 27 August 2001
2. The Family of Enclosures
Myricom offers a series of enclosures, so that you can choose the one that best fits your needs.
Enclosure product code
M3-E16 M3-E32
M3-E64 M3-E128
Maximum # of port line cards
2
4
8
16
Maximum # of front-panel ports
16
32
64
128
Physical height (1U = 1.75 in)
2U
3U
5U
9U
As you may note from the last paragraph of the preceding section, a Clos network for 64 or
fewer hosts (8 or fewer leaf switches) would require only 8-port switches for the spine. An
XBar16 can serve the purpose of two 8-port switches (with some additional communication
provided “free”). Thus, a suitable topology for a 64-host Clos network of 16-port switches is:
8
hosts
8
hosts
8
hosts
8
hosts
8
hosts
8
hosts
8
hosts
8
hosts
2 links
each
in which each of the thicker lines represents two links. (If we wanted to get “theoretical,” we’d
point out that the paired links connect to each of the two hypothetical 8-port switches within each
16-port spine switch.) This is the topology of the backplane and port line cards of the M3-E64.
Similarly, here is the topology of the backplane and port line cards of the M3-E32:
8
hosts
8
hosts
8
hosts
8
hosts
4 links
each
