From 1517101ceb08b13f85b731c26262acc1ee742bae Mon Sep 17 00:00:00 2001
From: Tom Deakin <tom.deakin@bristol.ac.uk>
Date: Mon, 8 Feb 2021 11:07:38 +0000
Subject: [PATCH] [SYCL 2020] Remove work-group heuristic for reduction as
 unused

---
 SYCLStream.cpp | 13 -------------
 SYCLStream.h   |  4 ----
 2 files changed, 17 deletions(-)

diff --git a/SYCLStream.cpp b/SYCLStream.cpp
index d879c4e..8a1010e 100644
--- a/SYCLStream.cpp
+++ b/SYCLStream.cpp
@@ -27,22 +27,9 @@ SYCLStream<T>::SYCLStream(const int ARRAY_SIZE, const int device_index)
 
   sycl::device dev = devices[device_index];
 
-  // Determine sensible dot kernel NDRange configuration
-  if (dev.is_cpu())
-  {
-    dot_num_groups = dev.get_info<sycl::info::device::max_compute_units>();
-    dot_wgsize     = dev.get_info<sycl::info::device::native_vector_width_double>() * 2;
-  }
-  else
-  {
-    dot_num_groups = dev.get_info<sycl::info::device::max_compute_units>() * 4;
-    dot_wgsize     = dev.get_info<sycl::info::device::max_work_group_size>();
-  }
-
   // Print out device information
   std::cout << "Using SYCL device " << getDeviceName(device_index) << std::endl;
   std::cout << "Driver: " << getDeviceDriver(device_index) << std::endl;
-  std::cout << "Reduction kernel config: " << dot_num_groups << " groups of size " << dot_wgsize << std::endl;
 
   queue = new sycl::queue(dev, sycl::async_handler{[&](sycl::exception_list l)
   {
diff --git a/SYCLStream.h b/SYCLStream.h
index 124ab28..3ebea6c 100644
--- a/SYCLStream.h
+++ b/SYCLStream.h
@@ -29,10 +29,6 @@ class SYCLStream : public Stream<T>
     sycl::buffer<T> *d_c;
     sycl::buffer<T> *d_sum;
 
-    // NDRange configuration for the dot kernel
-    size_t dot_num_groups;
-    size_t dot_wgsize;
-
   public:
 
     SYCLStream(const int, const int);