Merge pull request BVLC#5972 from icyblade/icyblade-patch-1

add support for cuDNN v7

Author: Noiredd

docs/installation.md

@@ -42,14 +42,14 @@ Optional dependencies:
 
 * [OpenCV](http://opencv.org/) >= 2.4 including 3.0
 * IO libraries: `lmdb`, `leveldb` (note: leveldb requires `snappy`)
-* cuDNN for GPU acceleration (v6)
+* cuDNN for GPU acceleration (v7)
 
 Pycaffe and Matcaffe interfaces have their own natural needs.
 
 * For Python Caffe:  `Python 2.7` or `Python 3.3+`, `numpy (>= 1.7)`, boost-provided `boost.python`
 * For MATLAB Caffe: MATLAB with the `mex` compiler.
 
-**cuDNN Caffe**: for fastest operation Caffe is accelerated by drop-in integration of [NVIDIA cuDNN](https://developer.nvidia.com/cudnn). To speed up your Caffe models, install cuDNN then uncomment the `USE_CUDNN := 1` flag in `Makefile.config` when installing Caffe. Acceleration is automatic. The current version is cuDNN v6; older versions are supported in older Caffe.
+**cuDNN Caffe**: for fastest operation Caffe is accelerated by drop-in integration of [NVIDIA cuDNN](https://developer.nvidia.com/cudnn). To speed up your Caffe models, install cuDNN then uncomment the `USE_CUDNN := 1` flag in `Makefile.config` when installing Caffe. Acceleration is automatic. The current version is cuDNN v7; older versions are supported in older Caffe.
 
 **CPU-only Caffe**: for cold-brewed CPU-only Caffe uncomment the `CPU_ONLY := 1` flag in `Makefile.config` to configure and build Caffe without CUDA. This is helpful for cloud or cluster deployment.
 

include/caffe/util/cudnn.hpp

@@ -44,6 +44,12 @@ inline const char* cudnnGetErrorString(cudnnStatus_t status) {
 #if CUDNN_VERSION_MIN(6, 0, 0)
     case CUDNN_STATUS_RUNTIME_PREREQUISITE_MISSING:
       return "CUDNN_STATUS_RUNTIME_PREREQUISITE_MISSING";
+#endif
+#if CUDNN_VERSION_MIN(7, 0, 0)
+    case CUDNN_STATUS_RUNTIME_IN_PROGRESS:
+      return "CUDNN_STATUS_RUNTIME_IN_PROGRESS";
+    case CUDNN_STATUS_RUNTIME_FP_OVERFLOW:
+      return "CUDNN_STATUS_RUNTIME_FP_OVERFLOW";
 #endif
   }
   return "Unknown cudnn status";

scripts/travis/install-deps.sh

@@ -106,7 +106,7 @@ if $WITH_CUDA ; then
   ln -s /usr/local/cuda-$CUDA_VERSION /usr/local/cuda
 
   if $WITH_CUDNN ; then
-    apt-get install -y --no-install-recommends libcudnn6-dev
+    apt-get install -y --no-install-recommends libcudnn7-dev
   fi
 fi