[test-e2e][Matrix] Fix joint matrix load address (#10259)

The loading address didn't calculate the column offset right w.r.t the
sub-group id.

Signed-off-by: Yilong Guo <[email protected]>

Author: Nuullll

sycl/test-e2e/Matrix/get_coord_bf16_matA_impl.hpp

@@ -117,7 +117,7 @@ void matrix_sum_rows(queue q, big_matrix<T, M, K> &A, nd_range<2> &r) {
                sub_a;
 
           joint_matrix_load(
-                 sg, sub_a, accA.template get_multi_ptr<access::decorated::no>() + (global_idx * TM * K) + TK,
+                 sg, sub_a, accA.template get_multi_ptr<access::decorated::no>() + (sg_startx * TM * K) + sg_starty / SG_SZ * TK,
                  K); 
 
            // calculate sum of rows in sum_rows_v[8], there are 8 rows in sub_a
@@ -175,7 +175,7 @@ int main() {
 
   for (int i = 0; i < MATRIX_M; i++) {
     for (int j = 0; j < MATRIX_K; j++) {
-      A[i][j] = i;
+      A[i][j] = i + j;
     }
   }
 

sycl/test-e2e/Matrix/get_coord_bf16_matB_impl.hpp

@@ -142,7 +142,7 @@ void matrix_sum_cols(queue q, big_matrix<T, M, N> &B, nd_range<2> &r) {
            joint_matrix_load(
                sg, sub_b,
                accB.template get_multi_ptr<access::decorated::no>() +
-                   (global_idx * (TK / 4) * N) + sg_starty / SG_SZ * TN * 4,
+                   (sg_startx * (TK / 4) * N) + sg_starty / SG_SZ * TN * 4,
                N);
 
            int32_t sum_local_cols[N] = {0}; // 4 local cols, N total
@@ -207,7 +207,7 @@ int main() {
 
   for (int i = 0; i < MATRIX_K; i++) {
     for (int j = 0; j < MATRIX_N; j++) {
-      B[i][j] = i;
+      B[i][j] = i + j;
     }
   }