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feat: first cut at actual token generation and model loading

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This commit is contained in:
Georg Bauer
2026-07-24 17:44:41 +02:00
parent 616b550849
commit ff984bb96a
38 changed files with 66885 additions and 61 deletions
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metal/concat.metal Normal file
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// DS4 Metal concat kernel used by the graph.
struct ds4_metal_args_concat {
int32_t ne00;
int32_t ne01;
int32_t ne02;
int32_t ne03;
uint64_t nb00;
uint64_t nb01;
uint64_t nb02;
uint64_t nb03;
int32_t ne10;
int32_t ne11;
int32_t ne12;
int32_t ne13;
uint64_t nb10;
uint64_t nb11;
uint64_t nb12;
uint64_t nb13;
int32_t ne0;
int32_t ne1;
int32_t ne2;
int32_t ne3;
uint64_t nb0;
uint64_t nb1;
uint64_t nb2;
uint64_t nb3;
int32_t dim;
};
// Concatenates two float tensors along one dimension. In DS4 this is a graph
// utility for assembling attention inputs with exactly the same tensor layout
// expected by the downstream kernels.
kernel void kernel_concat(
constant ds4_metal_args_concat & args,
device const char * src0,
device const char * src1,
device char * dst,
uint3 tgpig[[threadgroup_position_in_grid]],
ushort3 tpitg[[thread_position_in_threadgroup]],
ushort3 ntg[[threads_per_threadgroup]]) {
const int i3 = tgpig.z;
const int i2 = tgpig.y;
const int i1 = tgpig.x;
int o[4] = {0, 0, 0, 0};
o[args.dim] = args.dim == 0 ? args.ne00 : (args.dim == 1 ? args.ne01 : (args.dim == 2 ? args.ne02 : args.ne03));
device const float * x;
for (int i0 = tpitg.x; i0 < args.ne0; i0 += ntg.x) {
if (i0 < args.ne00 && i1 < args.ne01 && i2 < args.ne02 && i3 < args.ne03) {
x = (device const float *)(src0 + (i3 )*args.nb03 + (i2 )*args.nb02 + (i1 )*args.nb01 + (i0 )*args.nb00);
} else {
x = (device const float *)(src1 + (i3 - o[3])*args.nb13 + (i2 - o[2])*args.nb12 + (i1 - o[1])*args.nb11 + (i0 - o[0])*args.nb10);
}
device float * y = (device float *)(dst + i3*args.nb3 + i2*args.nb2 + i1*args.nb1 + i0*args.nb0);
*y = *x;
}
}