Supermicro X11DPX-T User Manual page 39

DCPMM Memory Population Tables for 2nd Gen Intel Xeon Scalable-SP
Processors
Note: Only 2nd Gen Intel Xeon Scalable-SP (82xx/62xx/52xx/4215 series) processors
support DCPMM memory.
Modes P1-DIMMF1 P1-DIMME1
AD DRAM1 DRAM1
MM DRAM2 DRAM2
AD + MM
DRAM3 DRAM3
AD DRAM1
DCPMM
MM DCPMM DRAM1
AD + MM DCPMM DRAM3
Modes P1-DIMMF1 P1-DIMME1
AD DRAM1 DRAM1
AD*
DRAM1 DRAM1
DRAM1 RDIMM
DRAM2 RDIMM
DRAM3 RDIMM
Note: DDR4 single rank x8 is not available for DCPMM Memory Mode or App-Direct
Mode.
DCPMM
•
* 2nd socket has no DCPMM DIMM
•
Mode definitions: AD=App Direct Mode, MM=Memory Mode, AD+MM=Mixed Mode
•
For MM, general DDR4+DCPMM ratio is between 1:4 and 1:16. Excessive capacity for DCPMM can be used for AD.
•
For each individual population, rearrangements between channels are allowed as long as the resulting population is
compliant with the X11 memory population rules for the 2nd Gen Intel Xeon Scalable-SP processors.
•
For each individual population, please use the same DDR4 DIMM in all slots.
•
For each individual population, sockets are normally symmetric with exceptions for 1 DCPMM per socket and 1 DCPMM
per node case. Currently, DCPMM modules operate at 2666 MHz.
•
No mixing of DCPMM and NVMDIMMs within the same platform is allowed.
•
This DCPMM population guide targets a balanced DCPMM-to-DRAM-cache ratio in MM and MM + AD modes.
Validation Matrix (DDR4 DIMMs Validated w/DCPMM)
DIMM Type
RDIMM
LRDIMM
LRDIMM 3DS
Symmetric Population within 1 CPU Socket
P1-DIMMD1 P1-DIMMD2 P1-DIMMA2
DRAM1
DCPMM DCPMM
DRAM2 DCPMM DCPMM
DRAM3 DCPMM DCPMM
DRAM1 - -
DRAM1 - -
DRAM3 - -
Asymmetric Population within 1 CPU Socket
P1-DIMMD1 P1-DIMMD2 P1-DIMMA2
DRAM1 - DCPMM
DRAM1 - DCPMM
Legend
(for the two tables above)
DDR4 Type
3DS RDIMM LRDIMM
- -
3DS RDIMM LRDIMM
Legend
(for the first two tables above)
Capacity
Any Capacity (Uniformly for all channels for a given configuration)
Ranks Per DIMM
& Data Width
(Stack)
1Rx4
2Rx8
2Rx4
4Rx4
8Rx4 (4H)
39
Chapter 2: Installation
P1-DIMMA1 P1-DIMMB1 P1-DIMMC1
DRAM1 DRAM1 DRAM1
DRAM2 DRAM2 DRAM2
DRAM3 DRAM3 DRAM3
DRAM1 DRAM1
DCPMM
DRAM1 DRAM1 DCPMM
DRAM3 DRAM3 DCPMM
P1-DIMMA1 P1-DIMMB1 P1-DIMMC1
DRAM1 DRAM1 DRAM1
DRAM1 DRAM1 DRAM1
Capacity
3DS LRDIMM
Refer to Validation Matrix (DDR4
- DIMMs validated with DCPMM)
below.
-
DIMM Capacity (GB)
DRAM Density
4Gb 8Gb
8GB 16GB
8GB 16GB
16GB 32GB
N/A 64GB
N/A 128GB
Channel Config.
2-1-1
2-1-1
2-1-1
1-1-1
1-1-1
1-1-1
Channel Config.
2-1-1
2-1-1