Compaq AlphaServer GS60 Operation Manual page 151

The ILV line contains a memory interleave value (ILV) for each memory. The
default memory configuration algorithm attempts to maximize memory interleaving;
arrays on a single memory module are interleaved by default. In Example 6-8, the
memory modules at nodes 2 and 6 are each in a two-way system internal interleave
(they are not interleaved with each other). There are two interleave sets; set A and
set B. Information on memory interleaving can be obtained by entering a show
memory command:
P00>>> show memory
Set Node Size
--- ---- ----
A 2 256 Mb
B 6 128 MB
A system with four memory modules is shown in the following example:
F E D C B
In this example, there is one memory interleave set designated by the letter A. Note
that there is no A2 designator on the ILV line; the memory at node 4 provides on-
board interleaving, and so supplies both the A0 memory word and the A2 memory
word (which is not reported on the ILV line). Also note that different size memory
arrays can be interleaved into a single set by "stacking" the smaller arrays to
interleave with their larger counterparts.
The line after the ILV line displays the size of each configured memory module in
the system and gives the total size of system memory. In Example 6-8, the total size
is 384 Mbytes.
Base Address
-------- --------
00000000 00000000
00000000 10000000
A 9 8 7 6
. B0 A3 A1
. 128 128 128 256 .
Intlv
-----
2-Way
2-Way
5 4 3 2 1
A0 . .
.
System Troubleshooting
Position
--------
0
0
0 NODE #
. . ILV
. . 640MB
6-29