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#version 450
#include "common.comp"
#extension GL_KHR_shader_subgroup_arithmetic : require
layout(local_size_x_id = 0) in;
layout (binding = 0) readonly buffer tensorInA { float16_t inA[]; };
layout (binding = 1) readonly buffer tensorInB { float inB[]; };
layout (binding = 2) writeonly buffer tensorOut { float out_[]; };
layout (push_constant) uniform parameter {
uint inAOff;
uint inBOff;
uint outOff;
int ne00;
int ne01;
int ne02;
uint nb00;
uint nb01;
uint nb02;
uint nb03;
int ne10;
int ne11;
int ne12;
uint nb10;
uint nb11;
uint nb12;
uint nb13;
int ne0;
int ne1;
uint r2;
uint r3;
} pcs;
#define N_F16_F32 4
void main() {
const uint r0 = gl_WorkGroupID.x;
const uint rb = gl_WorkGroupID.y*N_F16_F32;
const uint im = gl_WorkGroupID.z;
const uint i12 = im%pcs.ne12;
const uint i13 = im/pcs.ne12;
const uint offset0 = r0*pcs.nb01 + (i12/pcs.r2)*pcs.nb02 + (i13/pcs.r3)*pcs.nb03;
const uint x = offset0 / 2 + pcs.inAOff; // Based from inA
for (uint row = 0; row < N_F16_F32; ++row) {
uint r1 = rb + row;
if (r1 >= pcs.ne11) {
break;
}
const uint y = (r1*pcs.nb11 + i12*pcs.nb12 + i13*pcs.nb13) / 4 + pcs.inBOff;
float sumf = 0;
for (uint i = gl_SubgroupInvocationID.x; i < pcs.ne00; i += gl_SubgroupSize) {
sumf += float(inA[x+i]) * float(inB[y+i]);
}
const float all_sum = subgroupAdd(sumf);
if (subgroupElect()) {
out_[im*pcs.ne1*pcs.ne0 + r1*pcs.ne0 + r0 + pcs.outOff] = all_sum;
}
}
}
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