For the complete documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /max/get-started.md).

Mojo module

tmem

Tensor Memory (TMEM) abstractions for SM100 Blackwell GPUs.

TMEM is dedicated memory for MMA accumulators, separate from registers and shared memory. This module provides type-safe abstractions:

• TmemAllocation: Manages TMEM lifecycle (alloc/dealloc)
• TmemTensor: Layout-parameterized typed view over TMEM accumulators
• TmemStage: Represents a pipeline stage for accumulator buffering
• TmemAddress: Simple address wrapper for TMEM load operations

comptime values

TMEM_LOWER_ROW_OFFSET

comptime TMEM_LOWER_ROW_OFFSET = UInt32(1048576)

Structs

• ​BlockScaledTmem: TMEM region for block-scaled matmul with typed tile accessors.
• ​TmemAddress: Simple TMEM address wrapper for load/store operations.
• ​TmemAllocation: Handle to allocated Tensor Memory.
• ​TmemArrayType: Array of tiles in Tensor Memory (TMEM).
• ​TmemDeallocBarrier: TMEM deallocation synchronization barrier.
• ​TmemFragments: Paired upper/lower accumulator fragments from TMEM.
• ​TmemStage: A pipeline stage within TMEM for accumulator buffering.
• ​TmemTensor: Typed tensor view over Tensor Memory (TMEM) for MMA accumulators.

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