C-14
Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual
• December
2004
C.3.6.3
DIMM Interleaving
DIMM interleaving is interleaving between pairs of DIMMs. Interleaving between
DIMMs can be done only if all four DIMMs are the same. If the pairs are different, it
is still possible to interleave external banks (in double bank DIMMs) and internal
banks.
For maximum interleaving performance all DIMMs need to be the same Sun part
number.
Note –
There are no constraints for bank or rank interleaving within the same pair.
shows the different interleaving modes supported based on the DIMMs
used.
C.3.6.4
XOR Interleaving
The Sun Blade 1500 workstation also supports a fourth interleaving mode called
XOR interleaving. This interleaving mode is used to distribute L2 cache conflict
misses and L2 cache read/writeback pairs across more banks.
To use XOR interleaving, all DIMMs must be identical. XOR interleaving is a special
case that is not described in
TABLE
C-4
Interleaving Modes
DIMM Pairs
DIMM Type
Interleaving Mode Support
1
Single bank
Bank
1
Dual bank
Bank/rank
2
Diff, single-single
Bank
2
Diff, single-double
Bank/rank, bank/rank
2
Diff, double-double
Bank/rank, bank/rank
2
Same, single-single
Bank/DIMM
2
Same, single-double
Bank/DIMM/rank (on double)
2
Same, double-
double
Bank/DIMM/rank
Summary of Contents for Sun Blade 1500
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