[SYCL] test for context with multiple devices

Author: vladimirlaz

SYCL/Basic/context-with-multiple-devices.cpp

@@ -0,0 +1,45 @@
+// REQUIRES: cpu, accelerator, aoc
+
+// UNSUPPORTED: cuda, level_zero
+
+// RUN: %clangxx -fsycl -fsycl-unnamed-lambda -fsycl-targets=%sycl_triple %s -o %t1.out
+// RUN: %CPU_RUN_PLACEHOLDER CL_CONFIG_CPU_EMULATE_DEVICES=2 %t1.out
+// RUN: %CPU_RUN_PLACEHOLDER CL_CONFIG_CPU_EMULATE_DEVICES=4 %t1.out
+// RUN: %clangxx -fsycl -fintelfpga -fsycl-unnamed-lambda %s -o %t2.out
+// RUN: %ACC_RUN_PLACEHOLDER CL_CONFIG_CPU_EMULATE_DEVICES=2 %t2.out
+
+#include <CL/sycl.hpp>
+
+void exceptionHandler(sycl::exception_list exceptions) {
+  for (std::exception_ptr const &e : exceptions) {
+    try {
+      std::rethrow_exception(e);
+    } catch (sycl::exception const &e) {
+      std::cerr << "Caught asynchronous SYCL exception:\n"
+                << e.what() << std::endl;
+    }
+  }
+}
+
+int main() {
+  auto DeviceList = sycl::device::get_devices();
+
+  // remove host device from the list
+  DeviceList.erase(std::remove_if(DeviceList.begin(), DeviceList.end(),
+                                  [](auto Device) { return Device.is_host(); }),
+                   DeviceList.end());
+
+  sycl::context Context(DeviceList, &exceptionHandler);
+
+  std::vector<sycl::queue> QueueList;
+  for (const auto &Device : Context.get_devices()) {
+    QueueList.emplace_back(Context, Device, &exceptionHandler);
+  }
+
+  for (auto &Queue : QueueList) {
+    Queue.submit(
+        [&](sycl::handler &cgh) { cgh.parallel_for(100, [=](auto i) {}); });
+  }
+
+  return 0;
+}