feat(mgb/dnn): add accuracy_depend_on_batch attribute

GitOrigin-RevId: 2be1db43d06b3d9712a8faeb489f67182a9ed16c

dnn/include/megdnn/oprs/base.h

@@ -127,6 +127,15 @@ public:
          * \brief whether the algo is usable once shape changed.
          * */
         USABLE_DEPEND_ON_SHAPE = 1 << 2,
+
+        /**
+         * \brief whether the accuracy of the algo is dependent with respect
+         * to batch
+         * In the case of using algorithm with this attribute, even if the
+         * content of each batch is the same, the output under multiple batch
+         * input and single batch input may not equal
+         * */
+        ACCURACY_DEPEND_ON_BATCH = 1 << 3,
     };
 
     /**

dnn/src/common/algo_base.cpp

@@ -19,7 +19,8 @@ using namespace megdnn;
     cb(DEFAULT)                    \
     cb(REPRODUCIBLE)               \
     cb(NAIVE)                      \
-    cb(USABLE_DEPEND_ON_SHAPE)
+    cb(USABLE_DEPEND_ON_SHAPE)     \
+    cb(ACCURACY_DEPEND_ON_BATCH)
 
 namespace {
 inline const char* attr_str(const AlgoAttribute& attr) {