Configure SimSYCL system

test/test_main.cc

@@ -5,6 +5,10 @@
 #include <catch2/reporters/catch_reporter_event_listener.hpp>
 #include <catch2/reporters/catch_reporter_registrars.hpp>
 
+#if CELERITY_SIMSYCL
+#include <simsycl/system.hh>
+#endif
+
 /**
  * We provide a custom main function to add additional CLI flags.
  */
@@ -19,6 +23,23 @@ int main(int argc, char* argv[]) {
 	int return_code = session.applyCommandLine(argc, argv);
 	if(return_code != 0) { return return_code; }
 
+#if CELERITY_SIMSYCL
+	{
+		// There are tests (buffer_manager_tests) which allocate a fixed fraction of the device global memory, so the device needs to report a reasonably small
+		// value to avoid attempts to allocate the entire address space (default device has global_mem_size = SIZE_MAX)
+		auto sim_device = simsycl::builtin_device;
+		sim_device.global_mem_size = 1 << 30; // 1 GiB
+
+		simsycl::system_config sim_system;
+		sim_system.platforms = {{"SimSYCL", simsycl::builtin_platform}};
+		for(int i = 0; i < 4; ++i) {
+			sim_system.devices.emplace(fmt::format("GPU#{}", i), sim_device);
+		}
+
+		simsycl::configure_system(sim_system);
+	}
+#endif
+
 	// allow unit tests to catch and recover from panics
 	celerity::detail::utils::set_panic_solution(celerity::detail::utils::panic_solution::throw_logic_error);