Difference between revisions of "Status Matrix"

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(x86 locking probably affects I/O in uniprocessor FS systems too)
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Revision as of 21:39, 18 September 2011

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:

  1. Ruby does not support atomic-mode accesses
  2. The MI_example protocol cannot support LL/SC semantics
  3. Ruby does not support probing the O3 LSQ to enforce non-weak consistency models
  4. 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.
  5. Classic caches do not support x86 locked (atomic RMW) accesses. The AtomicSimple CPU model enforces atomic RMW accesses itself, so this only affects correctness for timing-mode CPU models.

ISA Support Matrices

Alpha

Processor Memory System
Model System Count Classic Ruby
MI_example MOESI_hammer MESI_CMP_directory MOESI_CMP_directory MOESI_CMP_token
AtomicSimple SE uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
FS uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
TimingSimple SE uni
multi Note 2
FS uni
multi Note 2
InOrder SE uni
multi Note 2
FS uni
multi Note 2
O3 SE uni
multi Note 2 Note 3 Note 3 Note 3 Note 3
FS uni
multi Note 2 Note 3 Note 3 Note 3 Note 3

x86

Processor Memory System
Model System Count Classic Ruby
MI_example MOESI_hammer MESI_CMP_directory MOESI_CMP_directory MOESI_CMP_token
AtomicSimple SE uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
FS uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
TimingSimple SE uni
multi Note 5
FS uni Note 5
multi Note 5
InOrder SE uni
multi
FS uni
multi
O3 SE uni
multi Note 5 Note 3 Note 3 Note 3 Note 3 Note 3
FS uni Note 5
multi Note 5 Note 3 Note 3 Note 3 Note 3 Note 3

ARM

Processor Memory System
Model System Count Classic Ruby
MI_example MOESI_hammer MESI_CMP_directory MOESI_CMP_directory MOESI_CMP_token
AtomicSimple SE uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
FS uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 4 Note 1 Note 1 Note 1 Note 1 Note 1
TimingSimple SE uni
multi Note 2
FS uni
multi Note 4 Note 2
InOrder SE uni
multi
FS uni
multi
O3 SE uni
multi Note 2 Note 3 Note 3 Note 3 Note 3
FS uni
multi Note 4 Note 2 Note 3 Note 3 Note 3 Note 3

SPARC

Processor Memory System
Model System Count Classic Ruby
MI_example MOESI_hammer MESI_CMP_directory MOESI_CMP_directory MOESI_CMP_token
AtomicSimple SE uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
FS uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
TimingSimple SE uni
multi
FS uni
multi
InOrder SE uni
multi
FS uni
multi
O3 SE uni
multi Note 3 Note 3 Note 3 Note 3 Note 3
FS uni
multi Note 3 Note 3 Note 3 Note 3 Note 3

PowerPC

Processor Memory System
Model System Count Classic Ruby
MI_example MOESI_hammer MESI_CMP_directory MOESI_CMP_directory MOESI_CMP_token
AtomicSimple SE uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
FS uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
TimingSimple SE uni
multi
FS uni
multi
InOrder SE uni
multi
FS uni
multi
O3 SE uni
multi Note 3 Note 3 Note 3 Note 3 Note 3
FS uni
multi Note 3 Note 3 Note 3 Note 3 Note 3

MIPS

Processor Memory System
Model System Count Classic Ruby
MI_example MOESI_hammer MESI_CMP_directory MOESI_CMP_directory MOESI_CMP_token
AtomicSimple SE uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
FS uni Note 1 Note 1 Note 1 Note 1 Note 1
multi Note 1 Note 1 Note 1 Note 1 Note 1
TimingSimple SE uni
multi
FS uni
multi
InOrder SE uni
multi
FS uni
multi
O3 SE uni
multi Note 3 Note 3 Note 3 Note 3 Note 3
FS uni
multi Note 3 Note 3 Note 3 Note 3 Note 3
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