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 struct
ResourceKind
struct ResourceKind
Hardware resource that an operation occupies.
Each operation is assigned to a resource unit with a finite capacity. Two operations on the same resource at the same time slot contend. The resource also determines which wait counter tracks the operation:
GLOBAL_MEM → vmcnt (buffer_load instructions) LDS → lgkmcnt (ds_read / LDS instructions) MMA_UNIT → MFMA (matrix fused multiply-add) VALU → VALU (vector ALU: softmax, exp2, reductions) SCALAR → SALU (barriers, priority hints, fences) NONE → sentinel (no-op / not applicable)
On CDNA architectures, MMA_UNIT and VALU are independent execution units that can issue simultaneously. The scheduler models this by tracking separate free times for each, allowing MMA and VALU ops to overlap.
Implemented traits
AnyType,
Copyable,
Equatable,
ImplicitlyCopyable,
ImplicitlyDestructible,
Movable,
Writable
comptime members
GLOBAL_MEM
comptime GLOBAL_MEM = ResourceKind(0)
LDS
comptime LDS = ResourceKind(1)
MMA_UNIT
comptime MMA_UNIT = ResourceKind(2)
NONE
comptime NONE = ResourceKind(255)
SCALAR
comptime SCALAR = ResourceKind(3)
VALU
comptime VALU = ResourceKind(4)
Vector ALU: parallel with MMA on CDNA architectures.
Methods
write_to
write_to(self, mut writer: T)
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