9.7.14.2. Matrix Data-types

The matrix multiply and accumulate operation is supported separately on integer, floating-point, sub-byte integer and single bit data-types. All operands must contain the same basic type kind, i.e., integer or floating-point.

For floating-point matrix multiply and accumulate operation, different matrix operands may have different precision, as described later.

Data-type	Multiplicands (A or B)	Accumulators (C or D)
Integer	`.u8`, `.s8`	`.s32`
Floating Point	`.f16`	`.f16`, `.f32`
Alternate floating Point	`.bf16`	`.f32`
Alternate floating Point	`.tf32`	`.f32`
Alternate floating Point	`.e4m3` or `.e5m2` or `.e3m2` or `.e2m3` or `.e2m1`	`.f16`, `.f32`
Alternate floating Point with scale	`.e4m3` or `.e5m2` or `.e3m2` or `.e2m3` or `.e2m1` X (Scale) `.ue8m0`	`.f32`
Alternate floating Point with scale	`.e2m1` X (Scale) `.ue8m0` or `.ue4m3`	`.f32`
Floating Point	`.f64`	`.f64`
Sub-byte integer	both `.u4` or both `.s4`	`.s32`
Single-bit integer	`.b1`	`.s32`