Fixed illegal access

futhark_mpi/dispatch.c

@@ -199,6 +199,7 @@ static envelope_t get_inner_envelope_1d(struct dispatch_context *dc, struct futh
         chunk_info_init(&inner_envelope.west, dc->type, dimensions, 0, start_x, true);
         futhark_values_u8_1d(fc, fut_west, inner_envelope.west.data);
     }
+
     // East
     {
         int start_x = dc->chunk_info->x + dc->chunk_info->dimensions[1] - thickness_x;
@@ -583,7 +584,6 @@ extern envelope_t get_outer_envelope(struct dispatch_context *dc, struct futhark
             MPI_Abort(MPI_COMM_WORLD, 1);
             break;
     }
-    futhark_context_sync(fc);
     envelope_free(&inner_envelope);
     return outer_envelope;
 }

game_of_life/benchmark/main.c

@@ -57,12 +57,11 @@ void compute_next_chunk_board(struct dispatch_context *dc, struct futhark_contex
                                                              outer_envelope.north_west.dimensions[0],
                                                              outer_envelope.north_west.dimensions[1]);
 
-    envelope_free(&outer_envelope);
-
     struct futhark_i8_2d *fut_chunk_board = futhark_new_i8_2d(fc, ci->data, ci->dimensions[0], ci->dimensions[1]);
+    futhark_context_sync(fc);
+    envelope_free(&outer_envelope);
 
     struct futhark_i8_2d *fut_next_chunk_board;
-    futhark_context_sync(fc);
     futhark_entry_next_chunk_board(fc, &fut_next_chunk_board, fut_chunk_board, fut_north_west, fut_north,
                                    fut_north_east, fut_west, fut_east, fut_south_west, fut_south, fut_south_east);
 

game_of_life/main.c

@@ -60,16 +60,16 @@ void compute_next_chunk_board(struct dispatch_context *dc, struct futhark_contex
                                                              outer_envelope.north_west.dimensions[1]);
 
     struct futhark_i8_2d *fut_chunk_board = futhark_new_i8_2d(fc, ci->data, ci->dimensions[0], ci->dimensions[1]);
-    struct futhark_i8_2d *fut_next_chunk_board;
     futhark_context_sync(fc);
+    envelope_free(&outer_envelope);
+
+    struct futhark_i8_2d *fut_next_chunk_board;
     futhark_entry_next_chunk_board(fc, &fut_next_chunk_board, fut_chunk_board, fut_north_west, fut_north,
                                    fut_north_east, fut_west, fut_east, fut_south_west, fut_south, fut_south_east);
-    futhark_context_sync(fc);
-    futhark_values_i8_2d(fc, fut_next_chunk_board, ci->data);
+
     futhark_context_sync(fc);
 
     futhark_free_i8_2d(fc, fut_chunk_board);
-    futhark_free_i8_2d(fc, fut_next_chunk_board);
     futhark_free_i8_2d(fc, fut_north_west);
     futhark_free_i8_2d(fc, fut_north);
     futhark_free_i8_2d(fc, fut_north_east);
@@ -79,7 +79,9 @@ void compute_next_chunk_board(struct dispatch_context *dc, struct futhark_contex
     futhark_free_i8_2d(fc, fut_south);
     futhark_free_i8_2d(fc, fut_south_east);
 
-    envelope_free(&outer_envelope);
+    futhark_values_i8_2d(fc, fut_next_chunk_board, ci->data);
+    futhark_context_sync(fc);
+    futhark_free_i8_2d(fc, fut_next_chunk_board);
 }
 
 int main(int argc, char *argv[]) {