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ggml-hexagon: fix rope failure at test-backend-ops #17565

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ggml-hexagon: fix rope failure at test-backend-ops #17565

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407b408
fix test failure
chraac Nov 27, 2025
4ddb8a4
fix: correct scaling calculations in rope_cache_init
chraac Nov 27, 2025
cfca78b
wip
chraac Nov 27, 2025
e9a02fd
wip
chraac Nov 28, 2025
e324bb0
fix: optimize element copying in rope_hex_f32 using memcpy
chraac Nov 28, 2025
0121291
fix: optimize loop boundaries in rope_hex_f32 for better performance
chraac Nov 28, 2025
010039a
rename
chraac Nov 28, 2025
a6ef41f
wip
chraac Nov 28, 2025
0376146
Merge branch 'master' into dev-fix-rope
chraac Nov 28, 2025
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fix test failure
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@chraac
chraac committed Nov 27, 2025
commit 407b408981abc4180f64b99f89b003168bf7b962
22 changes: 12 additions & 10 deletions ggml/src/ggml-hexagon/htp/rope-ops.c
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Original file line number Diff line number Diff line change
Expand Up @@ -151,9 +151,9 @@ static void init_rope_ctx(struct rope_th_ctx * rope_ctx, struct htp_ops_context
}

static void hvx_calc_rope_neox_f32(const float * restrict src0,
float * restrict dst,
const int num_elems,
const float * restrict theta_cache) {
float * restrict dst,
const int num_elems,
const float * restrict theta_cache) {
// for (int i = 0; i < num_elems; i += 2) {
//const float cos_theta = theta_cache[i + 0];
//const float sin_theta = theta_cache[i + 1];
Expand Down Expand Up @@ -192,7 +192,7 @@ static void hvx_calc_rope_neox_f32(const float * restrict src0,
HVX_Vector v4 = Q6_Vqf32_vsub_Vqf32Vqf32(vx0_c, vx1_s);
HVX_Vector v5 = Q6_Vqf32_vadd_Vqf32Vqf32(vx0_s, vx1_c);

*(HVX_Vector *) dst_curr = Q6_Vsf_equals_Vqf32(v4);
*(HVX_Vector *) dst_curr = Q6_Vsf_equals_Vqf32(v4);
*(HVX_Vector *) (dst_curr + half_size) = Q6_Vsf_equals_Vqf32(v5);

src0_curr += VLEN;
Expand Down Expand Up @@ -259,16 +259,16 @@ static void rope_hex_f32(struct rope_th_ctx * rope_ctx,
const uint32_t ir1,
int nth,
int ith,
int opt_path) {
const int opt_path) {
struct htp_ops_context * octx = rope_ctx->octx;

const struct htp_tensor * src0 = &octx->src0;
const struct htp_tensor * src1 = &octx->src1;
const struct htp_tensor * src2 = &octx->src2;
struct htp_tensor * dst = &octx->dst;

const int32_t mode = rope_ctx->mode;
const bool is_neox = mode & HTP_ROPE_TYPE_NEOX;
const int32_t mode = rope_ctx->mode;
const bool is_neox = mode & HTP_ROPE_TYPE_NEOX;

htp_rope_preamble;

Expand Down Expand Up @@ -317,10 +317,10 @@ static void rope_hex_f32(struct rope_th_ctx * rope_ctx,

if (is_neox) {
const float x0 = src_loc[0];
const float x1 = src_loc[rope_ctx->n_dims/2];
const float x1 = src_loc[rope_ctx->n_dims / 2];

dst_data_loc[0] = x0 * cos_theta - x1 * sin_theta;
dst_data_loc[rope_ctx->n_dims/2] = x0 * sin_theta + x1 * cos_theta;
dst_data_loc[0] = x0 * cos_theta - x1 * sin_theta;
dst_data_loc[rope_ctx->n_dims / 2] = x0 * sin_theta + x1 * cos_theta;

src_loc += 1;
dst_data_loc += 1;
Expand All @@ -337,6 +337,8 @@ static void rope_hex_f32(struct rope_th_ctx * rope_ctx,
}
}

src_loc += is_neox ? (rope_ctx->n_dims / 2) : 0;
dst_data_loc += is_neox ? (rope_ctx->n_dims / 2) : 0;
for (uint32_t i0 = rope_ctx->n_dims; i0 < ne0; i0 += 2) {
dst_data_loc[0] = src_loc[0];
dst_data_loc[1] = src_loc[1];
Expand Down