Tpetra parallel linear algebra Version of the Day
Loading...
Searching...
No Matches
Tpetra_Details_checkLaunchBlocking.hpp
1// @HEADER
2// ***********************************************************************
3//
4// Tpetra: Templated Linear Algebra Services Package
5// Copyright (2008) Sandia Corporation
6//
7// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
8// the U.S. Government retains certain rights in this software.
9//
10// Redistribution and use in source and binary forms, with or without
11// modification, are permitted provided that the following conditions are
12// met:
13//
14// 1. Redistributions of source code must retain the above copyright
15// notice, this list of conditions and the following disclaimer.
16//
17// 2. Redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution.
20//
21// 3. Neither the name of the Corporation nor the names of the
22// contributors may be used to endorse or promote products derived from
23// this software without specific prior written permission.
24//
25// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
26// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
29// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36//
37// ************************************************************************
38// @HEADER
39
40#ifndef TPETRA_DETAILS_CHECKLAUNCHBLOCKING_HPP
41#define TPETRA_DETAILS_CHECKLAUNCHBLOCKING_HPP
42
43#include "TpetraCore_config.h"
44#include <cstdlib>
45#include <stdexcept>
46#include "Kokkos_Core.hpp"
47
48namespace Tpetra {
49namespace Details {
50#ifdef HAVE_TPETRACORE_CUDA
51 //Verify that for pre-Pascal CUDA architectures, $CUDA_LAUNCH_BLOCKING == 1
52 inline void checkOldCudaLaunchBlocking()
53 {
54 if(!Kokkos::is_initialized())
55 throw std::logic_error("Kokkos must be initialized in order to check CUDA_LAUNCH_BLOCKING setting.");
56 size_t arch = Kokkos::Cuda::device_arch();
57 if(arch < 600)
58 {
59 //Compiling for Kepler/Maxwell: require launch blocking.
60 const char* launchBlockingEnv = std::getenv("CUDA_LAUNCH_BLOCKING");
61 if(!launchBlockingEnv || strcmp(launchBlockingEnv, "1"))
62 {
63 throw std::runtime_error(
64 "Tpetra::initialize(): Kokkos was compiled for an older CUDA architecture than Pascal, but\n"
65 "the environment variable CUDA_LAUNCH_BLOCKING is either unset or is not \"1\".\n"
66 "It must be set to \"1\" at runtime.\n");
67 }
68 }
69 }
70#else
71 inline void checkOldCudaLaunchBlocking() {}
72#endif
73}}
74
75#endif
Implementation details of Tpetra.
Namespace Tpetra contains the class and methods constituting the Tpetra library.