From 89e65c9ff6a004b60df3891b844d20fbfde1836d Mon Sep 17 00:00:00 2001
From: Ye Luo <yeluo@anl.gov>
Date: Mon, 29 Aug 2022 17:55:46 -0400
Subject: [PATCH] Update OLCF summit recipe

---
 config/build_olcf_summit_Clang.sh | 18 ++++++++++--------
 docs/installation.rst             |  6 +++---
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/config/build_olcf_summit_Clang.sh b/config/build_olcf_summit_Clang.sh
index 6d1c111b80..abcdf9232d 100755
--- a/config/build_olcf_summit_Clang.sh
+++ b/config/build_olcf_summit_Clang.sh
@@ -1,9 +1,11 @@
 #!/bin/bash
-
-echo "----------------------- WARNING ------------------------------------"
-echo "This is **not** production ready and intended for development only!!"
-echo "Use config/build_olcf_summit.sh for production on Summit."
-echo "----------------------- WARNING ------------------------------------"
+# This recipe is intended for OLCF Summit https://www.olcf.ornl.gov/summit/
+# It builds all the varaints of QMCPACK in the current directory
+# last revision: Aug 29th 2022
+#
+# How to invoke this script?
+# build_olcf_summit_Clang.sh # build all the variants assuming the current directory is the source directory.
+# build_olcf_summit_Clang.sh <source_dir> # build all the variants with a given source directory <source_dir>
 
 echo "Purging current module set"
 module purge
@@ -25,7 +27,7 @@ if [[ ! -d /gpfs/alpine/mat151/world-shared/opt/modules ]] ; then
   exit 1
 fi
 module use /gpfs/alpine/mat151/world-shared/opt/modules
-module load llvm/main-20220317-cuda11.0
+module load llvm/release-15.0.0-cuda11.0
 
 TYPE=Release
 Compiler=Clang
@@ -58,11 +60,11 @@ if [[ $name == *"_MP"* ]]; then
 fi
 
 if [[ $name == *"offload"* ]]; then
-  CMAKE_FLAGS="$CMAKE_FLAGS -DENABLE_OFFLOAD=ON -DUSE_OBJECT_TARGET=ON -DOFFLOAD_ARCH=sm_70"
+  CMAKE_FLAGS="$CMAKE_FLAGS -DENABLE_OFFLOAD=ON -DOFFLOAD_ARCH=sm_70"
 fi
 
 if [[ $name == *"cuda"* ]]; then
-  CMAKE_FLAGS="$CMAKE_FLAGS -DENABLE_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=70 -DCMAKE_CUDA_HOST_COMPILER=`which g++`"
+  CMAKE_FLAGS="$CMAKE_FLAGS -DENABLE_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=70"
 fi
 
 folder=build_summit_${Compiler}_${name}
diff --git a/docs/installation.rst b/docs/installation.rst
index b39c1d3c8a..2fa0b0b8b0 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -415,11 +415,11 @@ and is not suitable for production. Additional implementation in QMCPACK as
 well as improvements in open-source and vendor compilers is required for production status 
 to be reached. The following compilers have been verified:
 
-- LLVM Clang 14. Support NVIDIA GPUs.
+- LLVM Clang 15. Support NVIDIA GPUs.
 
   ::
 
-    -D ENABLE_OFFLOAD=ON -D USE_OBJECT_TARGET=ON
+    -D ENABLE_OFFLOAD=ON
 
   Clang and its downstream compilers support two extra options
   
@@ -452,7 +452,7 @@ For example, using Clang 14 on Summit.
 
   ::
   
-    -D ENABLE_OFFLOAD=ON -D USE_OBJECT_TARGET=ON -D ENABLE_CUDA=ON -D CMAKE_CUDA_ARCHITECTURES=70
+    -D ENABLE_OFFLOAD=ON -D ENABLE_CUDA=ON -D CMAKE_CUDA_ARCHITECTURES=70
 
 Similarly, HIP features can be enabled in conjunction with the offload code path to improve performance on AMD GPUs.