| Title: | TurboLaser Notesfile - AlphaServer 8200 and 8400 systems |
| Notice: | Welcome to WONDER::TURBOLASER in it's new home shortly |
| Moderator: | LANDO::DROBNER |
| Created: | Tue Dec 20 1994 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1218 |
| Total number of notes: | 4645 |
Two questions regarding memory on AS8400.
The site I'm at has three 2Gbyte modules in each of 2 AS8400 systems.
One system has MS7CC-FH
The other system has a mixture of MS7CC-FT and MS7CC-FP
What is the difference between -FT, FH, FP?
Second question: both systems have INTERLEAVE set to DEFAULT.
One machine interleaves 2 of the memory modules into SET A and the
third module sits in SET B by itself.
The other machine crated 3 separate memory sets, A,B, and C, each of
2 Gbyte in size.
Both consoles are at 4.0. Why do the two machines interleave the same
amount of memory differently?
-john
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1102.1 | DANGER::HARTWELL | Tue Feb 11 1997 18:01 | 18 | ||
Second Question:
It should be interleaving the memory modules as 2 in set A, 1 in set
B. When they are interleaved as 3 different sets you are most likely
not getting "optimal" system performance. (Though this is very
application dependent) Next time you get a chance in console
set the interleave to default (again), init the machine, and do
a show memory. If you still have 3 sets, looks like you found a console
bug. You can do a build -E, and a build -n for EACH processor module
(ie 0, 2, 4, 6, 8, ect.) then init and all should be fixed but this
WILL blow away and boot defaults, etc that have been set so note this
first before you do this.
/Dave
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| 1102.2 | effect of interleaving | PERFOM::HENNING | Wed Feb 12 1997 06:17 | 3 | |
Fully interleaved TL memory scores 1gb/sec on McCalpin streams.
Uninterleaved scores 1/2 gb/sec.
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| 1102.3 | got it | NEMAIL::SOBECKY | Facts,tho interesting,are irrelevant | Wed Feb 12 1997 17:48 | 6 |
Reply .1, thanks..that did the trick. Re .2, thanks for the performance
info.
-john
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| 1102.4 | -FH, -FT, -FP -- indicate DSIM supplier | LANDO::DROBNER | TurboLaser Engineering - 8200/8400 | Fri Feb 21 1997 17:17 | 8 |
Answer to the -FH, -FT, -FP question;
The module is a 2GB Memory module (MS7CC-FA), our manufacturing site
then use the last character to indicate the manufacture of the DSIMs
that are used on that module.
/Howard
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