NVIDIA ISA Viewer

BMMA

Bit Matrix Multiply and Accumulate

2 variants on SM90 (H100)

BMMA

R,R,R,R

distilled: @P0 BMMA.88128.???0.???0 R0, R0.ROW, R0.???0, R0 ;

key: BMMA_R_R_R_R

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
1	0	1	1	1	1	0	0	0	1	0	0	pred				operand 0								operand 1								operand 2								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
operand 3								0	modi	modi	modi 1		modi 2		0	modi 3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

Modifier Group 1

Binary	Value
00	88128
01	168128
10	168256
11	INVALID3

Modifier Group 2

Binary	Value
00	???0
01	???1
10	AND
11	???3

Modifier Group 3

Binary	Value
0	???0
1	POPC

Operand 1 Modifiers

Binary	Value
0	ROW
1	???1

Operand 2 Modifiers

Binary	Value
0	???0
1	COL

BMMA

R,R,R,R,UP

distilled: @P0 BMMA.88128.???0.???0 R0, R0.ROW, R0.???0, R0, UP6 ;

key: BMMA_R_R_R_R_UP

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
1	0	1	1	1	1	0	0	0	1	0	0	pred				operand 0								operand 1								operand 2								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
operand 3								0	modi	modi	modi 1		modi 2		0	modi 3	0	0	0	0	0	0	1	operand 4			0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

Modifier Group 1

Binary	Value
00	88128
01	168128
10	168256
11	INVALID3

Modifier Group 2

Binary	Value
00	???0
01	???1
10	AND
11	???3

Modifier Group 3

Binary	Value
0	???0
1	POPC

Operand 1 Modifiers

Binary	Value
0	ROW
1	???1

Operand 2 Modifiers

Binary	Value
0	???0
1	COL