From 0c0b1a8db4e82a7285d2f84b90c5c64837195ba5 Mon Sep 17 00:00:00 2001
From: Sergey Pokhodenko <sergey.pokhodenko@intel.com>
Date: Thu, 8 Oct 2020 10:24:30 +0300
Subject: [PATCH] Use only first device for each device type and backend

---
 backends/source/dppl_sycl_queue_manager.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/backends/source/dppl_sycl_queue_manager.cpp b/backends/source/dppl_sycl_queue_manager.cpp
index e6f64457fa..b858701465 100644
--- a/backends/source/dppl_sycl_queue_manager.cpp
+++ b/backends/source/dppl_sycl_queue_manager.cpp
@@ -75,8 +75,15 @@ class QMgrHelper
                 vector_class<device> SelectedDevices;
                 for(auto &d : Devices) {
                     auto devty = d.get_info<info::device::device_type>();
-                    if(devty == DTy && be == BE)
+                    if(devty == DTy && be == BE) {
                         SelectedDevices.push_back(d);
+
+                        // Workaround for situations when in some environments
+                        // get_devices() returns each device TWICE. Then it fails in call
+                        // for context constructor with all doubled devices.
+                        // So use only one first device.
+                        break;
+                    }
                 }
                 if (SelectedDevices.size() > 0) {
                     auto Ctx = context(SelectedDevices);