x86 AMX/ACE with >8 tiles
Project / Subsystem
binutils / binutils
Date
2026-07-27
Proposer
Christian Ludloff <ludloff@gmail.com>
Source type
public_inbox
Consensus
Proposed
Sentiment
—/10
Technical tradeoffs
- • Extends support for wider tile configurations in AMX/ACE, potentially increasing performance for specific workloads.
- • Requires careful handling of instruction encodings and MSRs to ensure compatibility.
- • Addresses potential specification oversights regarding memory operand widths.
All attributes
- project
- binutils
- subsystem
- binutils
- patch_id
- —
- discussion_id
- CAKSQd8VRpMcV84Sv3=N1kW6w73Q-0spJqO-nc_K-cjyYSiJU2g@mail.gmail.com
- source_type
- public_inbox
- title
- x86 AMX/ACE with >8 tiles
- headline
- x86 AMX/ACE with >8 tiles
- tldr
- Discusses documentation and implementation considerations for x86 AMX/ACE supporting more than 8 tiles.
- proposer
- Christian Ludloff <ludloff@gmail.com>
- consensus
- Proposed
- outcome
- proposed
- sentiment_score
- —
- technical_tradeoffs
-
- • Extends support for wider tile configurations in AMX/ACE, potentially increasing performance for specific workloads.
- • Requires careful handling of instruction encodings and MSRs to ensure compatibility.
- • Addresses potential specification oversights regarding memory operand widths.
- series_id
- —
- series_role
- standalone
- series_parts
- []
- tags
-
- • x86
- • AMX
- • ACE
- • binutils
- • documentation
- bugzilla_url
- —
- date
- 2026-07-27T00:00:00.000Z
x86 AMX/ACE with >8 tiles
Christian Ludloff is seeking to document and discuss the behavior of x86 AMX/ACE implementations that support 16 or 32 tiles. The focus is on how existing hardware and instruction encodings (VEX, EVEX) can accommodate these larger tile configurations, and the implications for software. The discussion touches upon CPUID reporting, TILECFG modifications, and potential oversights in the AMX specification regarding memory operand width.