From 0919d95aa40befee37e828814bfc9b56b46eafb3 Mon Sep 17 00:00:00 2001
From: Tom Deakin <tom.deakin@bristol.ac.uk>
Date: Mon, 11 May 2020 17:16:47 +0100
Subject: [PATCH] [SYCL] Use SYCL runtime device discovery

Fixes #63
---
 CHANGELOG.md   |  1 +
 SYCLStream.cpp | 11 ++---------
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b350b45..70f4460 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 - Use cl::sycl::id parameters instead of cl::sycl::item.
 - Update local copy of OpenCL C++ header file.
 - Ensure correct SYCL queue constructor with explicit async_handler.
+- Use built in SYCL runtime device discovery.
 
 ### Removed
 - Pre-building of kernels in SYCL version to ensure compatibility with SYCL 1.2.1.
diff --git a/SYCLStream.cpp b/SYCLStream.cpp
index 7f51b75..8960530 100644
--- a/SYCLStream.cpp
+++ b/SYCLStream.cpp
@@ -228,15 +228,8 @@ void SYCLStream<T>::read_arrays(std::vector<T>& a, std::vector<T>& b, std::vecto
 
 void getDeviceList(void)
 {
-  // Get list of platforms
-  std::vector<platform> platforms = platform::get_platforms();
-
-  // Enumerate devices
-  for (unsigned i = 0; i < platforms.size(); i++)
-  {
-    std::vector<device> plat_devices = platforms[i].get_devices();
-    devices.insert(devices.end(), plat_devices.begin(), plat_devices.end());
-  }
+  // Ask SYCL runtime for all devices in system
+  devices = cl::sycl::device::get_devices();
   cached = true;
 }