llama.cpp/ggml/src/ggml-opencl/kernels/softmax_4_f16.cl

101 lines
2.9 KiB
Common Lisp

#pragma OPENCL EXTENSION cl_khr_fp16 : enable
#ifdef cl_intel_subgroups
#pragma OPENCL EXTENSION cl_intel_subgroups : enable
#else
#pragma OPENCL EXTENSION cl_khr_subgroups : enable
#endif
#ifdef cl_intel_required_subgroup_size
#pragma OPENCL EXTENSION cl_intel_required_subgroup_size : enable
#define INTEL_GPU 1
#define REQD_SUBGROUP_SIZE_16 __attribute__((intel_reqd_sub_group_size(16)))
#define REQD_SUBGROUP_SIZE_32 __attribute__((intel_reqd_sub_group_size(32)))
#elif defined(cl_qcom_reqd_sub_group_size)
#pragma OPENCL EXTENSION cl_qcom_reqd_sub_group_size : enable
#define ADRENO_GPU 1
#define REQD_SUBGROUP_SIZE_64 __attribute__((qcom_reqd_sub_group_size("half")))
#define REQD_SUBGROUP_SIZE_128 __attribute__((qcom_reqd_sub_group_size("full")))
#endif
#ifdef ADRENO_GPU
REQD_SUBGROUP_SIZE_64
#endif
kernel void kernel_soft_max_4_f16(
global char * src0,
ulong offset0,
global char * src1,
ulong offset1,
global char * dst,
ulong offsetd,
int ne00,
ulong nb01,
ulong nb02,
ulong nb03,
int ne12,
int ne13,
ulong nb11,
ulong nb12,
ulong nb13,
ulong nb1,
ulong nb2,
ulong nb3,
float scale,
float max_bias,
float m0,
float m1,
int n_head_log2
) {
src0 = src0 + offset0;
src1 = src1 + offset1;
dst = dst + offsetd;
int i03 = get_group_id(2);
int i02 = get_group_id(1);
int i01 = get_group_id(0);
int i13 = i03%ne13;
int i12 = i02%ne12;
int i11 = i01;
global float4 * psrc4 = (global float4 *)(src0 + i01*nb01 + i02*nb02 + i03*nb03);
global half4 * pmask = src1 != src0 ? (global half4 *)(src1 + i11*nb11 + i12*nb12 + i13*nb13) : 0;
global float4 * pdst4 = (global float4 *)(dst + i01*nb1 + i02*nb2 + i03*nb3);
float slope = 1.0f;
// ALiBi
if (max_bias > 0.0f) {
int h = i02;
float base = h < n_head_log2 ? m0 : m1;
int exp = h < n_head_log2 ? h + 1 : 2*(h - n_head_log2) + 1;
slope = pow(base, exp);
}
// parallel max
float4 lmax4 = -INFINITY;
for (int i00 = get_local_id(0); i00 < ne00/4; i00 += get_local_size(0)) {
lmax4 = fmax(lmax4, psrc4[i00]*scale + slope*(pmask ? convert_float4(pmask[i00]) : 0.0f));
}
float lmax = fmax(fmax(lmax4.s0, lmax4.s1), fmax(lmax4.s2, lmax4.s3));
const float max = sub_group_reduce_max(lmax);
// parallel sum
float4 lsum4 = 0.0f;
for (int i00 = get_local_id(0); i00 < ne00/4; i00 += get_local_size(0)) {
const float4 exp_psrc4 = exp((psrc4[i00]*scale + slope*(pmask ? convert_float4(pmask[i00]) : 0.0f)) - max);
lsum4 += exp_psrc4;
pdst4[i00] = exp_psrc4;
}
float lsum = lsum4.s0 + lsum4.s1 + lsum4.s2 + lsum4.s3;
const float sum = sub_group_reduce_add(lsum);
for (int i00 = get_local_id(0); i00 < ne00/4; i00 += get_local_size(0)) {
pdst4[i00] /= sum;
}
}