diff --git a/var/spack/repos/builtin/packages/py-torch/package.py b/var/spack/repos/builtin/packages/py-torch/package.py
index 8e4c1de0ce..b5d8074deb 100644
--- a/var/spack/repos/builtin/packages/py-torch/package.py
+++ b/var/spack/repos/builtin/packages/py-torch/package.py
@@ -62,16 +62,16 @@ class PyTorch(PythonPackage):
     version('0.3.1', tag='v0.3.1', submodules=True)
 
     variant('cuda', default=True, description='Enables CUDA build')
-    variant('cudnn', default=False, description='Enables the cuDNN build')
+    variant('cudnn', default=True, description='Enables the cuDNN build')
     variant('magma', default=False, description='Enables the MAGMA build')
     variant('fbgemm', default=False, description='Enables the FBGEMM build')
     variant('test', default=False, description='Enables the test build')
     variant('miopen', default=False, description='Enables the MIOpen build')
-    variant('mkldnn', default=False, description='Enables use of MKLDNN')
+    variant('mkldnn', default=True, description='Enables use of MKLDNN')
     variant('nnpack', default=False, description='Enables NNPACK build')
     variant('qnnpack', default=False, description='Enables QNNPACK build (quantized 8-bit operators)')
     variant('distributed', default=False, description='Enables distributed (c10d, gloo, mpi, etc.) build')
-    variant('nccl', default=False, description='Use Spack-installed NCCL')
+    variant('nccl', default=True, description='Use Spack-installed NCCL')
     variant('caffe2', default=False, description='Enables Caffe2 operators build')
     variant('gloo', default=False, description='Enables features related to distributed support')
     variant('opencv', default=False, description='Enables use of OpenCV for additional operators')