The follow six tables describe the current state of component combinations in gem5.
Color Key
Definitely does not work
|
Might work
|
Should work
|
Definitely works
|
Unknown
|
Notes
Numbers in the squares below refer to the following notes:
- Ruby does not support atomic-mode accesses
- The MI_example protocol cannot support LL/SC semantics
- Ruby does not support probing the O3 LSQ to enforce non-weak consistency models
- ARM MP does not support booting with caches, but works otherwise. You can boot without caches then switch to running with caches using either a checkpoint/resume or on-line CPU switchover.
ISA Support Matrices
Alpha
Processor
|
Memory System
|
Cpu Model
|
System
|
Processor Count
|
Classic
|
Ruby
|
MI_example |
MOESI_hammer |
MESI_CMP_directory |
MOESI_CMP_directory |
MOESI_CMP_token
|
Atomic
|
SE
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
FS
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
TimingSimple
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
|
|
|
|
In-Order
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
|
|
|
|
o3
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
x86
Processor
|
Memory System
|
Cpu Model
|
System
|
Processor Count
|
Classic
|
Ruby
|
MI_example |
MOESI_hammer |
MESI_CMP_directory |
MOESI_CMP_directory |
MOESI_CMP_token
|
Atomic
|
SE
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
FS
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
TimingSimple
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
In-Order
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
o3
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
ARM
Processor
|
Memory System
|
Cpu Model
|
System
|
Processor Count
|
Classic
|
Ruby
|
MI_example |
MOESI_hammer |
MESI_CMP_directory |
MOESI_CMP_directory |
MOESI_CMP_token
|
Atomic
|
SE
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
FS
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
Note 4
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
TimingSimple
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
Note 4
|
Note 2
|
|
|
|
|
In-Order
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
o3
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 2
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
Note 4
|
Note 2
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
SPARC
Processor
|
Memory System
|
Cpu Model
|
System
|
Processor Count
|
Classic
|
Ruby
|
MI_example |
MOESI_hammer |
MESI_CMP_directory |
MOESI_CMP_directory |
MOESI_CMP_token
|
Atomic
|
SE
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
FS
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
TimingSimple
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
In-Order
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
o3
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
PowerPC
Processor
|
Memory System
|
Cpu Model
|
System
|
Processor Count
|
Classic
|
Ruby
|
MI_example |
MOESI_hammer |
MESI_CMP_directory |
MOESI_CMP_directory |
MOESI_CMP_token
|
Atomic
|
SE
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
FS
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
TimingSimple
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
In-Order
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
o3
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
MIPS
Processor
|
Memory System
|
Cpu Model
|
System
|
Processor Count
|
Classic
|
Ruby
|
MI_example |
MOESI_hammer |
MESI_CMP_directory |
MOESI_CMP_directory |
MOESI_CMP_token
|
Atomic
|
SE
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
FS
|
uniprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
multiprocessor
|
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
Note 1
|
TimingSimple
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
In-Order
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
|
|
|
|
|
o3
|
SE
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
FS
|
uniprocessor
|
|
|
|
|
|
|
multiprocessor
|
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|
Note 3
|