70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
// Copyright (c) 2010-2022, Lawrence Livermore National Security, LLC. Produced
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// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
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// LICENSE and NOTICE for details. LLNL-CODE-806117.
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//
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// This file is part of the MFEM library. For more information and source code
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// availability visit https://mfem.org.
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//
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// MFEM is free software; you can redistribute it and/or modify it under the
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// terms of the BSD-3 license. We welcome feedback and contributions, see file
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// CONTRIBUTING.md for details.
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#include "mfem.hpp"
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#include "unit_tests.hpp"
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using namespace mfem;
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TEST_CASE("MemoryManager/Scopes",
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"[MemoryManager]"
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"[CUDA]")
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{
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SECTION("WithNewMemoryAndSize")
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{
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Vector x(1);
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x.UseDevice(true);
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{
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Vector X;
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// from Operator::InitTVectors
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X.NewMemoryAndSize(x.GetMemory(), x.Size(), false);
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// from Vector::SetSubVectorComplement
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X.Read();
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// from Operator::RecoverFEMSolution
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x.SyncMemory(X);
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}
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// Accessible Memory<double> to get the flags
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struct MemoryDouble
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{
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double *h_ptr;
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int capacity; ///< Size of the allocated memory
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MemoryType h_mt; ///< Host memory type
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mutable unsigned flags;
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};
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const MemoryDouble *mem = (MemoryDouble*) &x.GetMemory();
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const double *h_x = mem->h_ptr;
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REQUIRE(h_x == x.GetData());
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REQUIRE(mem->capacity == x.Size());
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REQUIRE(mem->h_mt == Device::GetHostMemoryType());
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constexpr unsigned REGISTERED = 1 << 0;
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const bool registered = mem->flags & REGISTERED;
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const bool registered_is_known = registered == mm.IsKnown(h_x);
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REQUIRE(registered_is_known);
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}
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SECTION("WithMakeRef")
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{
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Vector x(1);
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x.UseDevice(true);
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const double *x_data = x.GetData();
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{
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Vector X;
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// from Operator::InitTVectors
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X.MakeRef(x, 0, x.Size());
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// from Vector::SetSubVectorComplement
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X.Read();
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// from Operator::RecoverFEMSolution
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x.SyncMemory(X);
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}
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REQUIRE((x_data == x.HostRead()));
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}
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}
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