From 7deff6cf4ffd4d21db2efb47a4374e145542ce2b Mon Sep 17 00:00:00 2001
From: Ye Luo <yeluo@anl.gov>
Date: Fri, 26 Jun 2020 22:31:36 -0500
Subject: [PATCH] Default CUDA_PROPAGATE_HOST_FLAGS to OFF.

---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 72cf2c98f..4ab2211a4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -686,6 +686,9 @@ ENDIF()
 #-------------------------------------------------------------------
 SET(HAVE_CUDA 0)
 IF(QMC_CUDA OR ENABLE_CUDA)
+  # FindCUDA default CUDA_PROPAGATE_HOST_FLAGS to ON but we prefer OFF
+  # It happened -ffast-math from host caused numerical issue in CUDA kernels.
+  OPTION(CUDA_PROPAGATE_HOST_FLAGS "Propagate C/CXX_FLAGS and friends to the host compiler via -Xcompile" OFF)
   FIND_PACKAGE(CUDA REQUIRED)
   SET(CUDA_LINK_LIBRARIES_KEYWORD PRIVATE)
   #set(CUDA_NVCC_FLAGS