[DOC][DEVGuide] Runtime system note (#467)

docs/api/python/topi.rst

@@ -35,7 +35,8 @@ Index
    topi.cuda.schedule_depthwise_conv2d_nchw
    topi.cuda.schedule_depthwise_conv2d_nhwc
    topi.cuda.schedule_reduce
-   topi.cuda.schedule_broadcast_to
+   topi.cuda.schedule_elemwise
+   topi.cuda.schedule_broadcast
 
 
 topi
@@ -69,4 +70,5 @@ topi.cuda
 .. autofunction:: topi.cuda.schedule_depthwise_conv2d_nchw
 .. autofunction:: topi.cuda.schedule_depthwise_conv2d_nhwc
 .. autofunction:: topi.cuda.schedule_reduce
-.. autofunction:: topi.cuda.schedule_broadcast_to
+.. autofunction:: topi.cuda.schedule_broadcast
+.. autofunction:: topi.cuda.schedule_elemwise

docs/dev/index.rst

+TVM Design and Developer Guide
+==============================
+
+Building an IR stack for deep learning systems involves many
+many systems-level design decisions.
+In this part of documentation, we share the rationale for the specific choices made when designing TVM.
+
+.. toctree::
+   :maxdepth: 2
+
+   runtime

docs/index.rst

@@ -16,5 +16,6 @@ Contents
    faq
    how_to/contribute
    api/python/index
+   dev/index
    api_links
    genindex