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Merge pull request #5620 from hakonhagland/timestepping2
Reservoir coupling: Implement time stepping
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| Copyright 2024 Equinor ASA | ||
| This file is part of the Open Porous Media project (OPM). | ||
| OPM is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| OPM is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with OPM. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| #include <config.h> | ||
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| #include <opm/simulators/flow/ReservoirCoupling.hpp> | ||
| #include <opm/simulators/utils/ParallelCommunication.hpp> | ||
| #include <opm/common/OpmLog/OpmLog.hpp> | ||
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| #include <fmt/format.h> | ||
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| namespace Opm { | ||
| namespace ReservoirCoupling { | ||
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| void custom_error_handler_(MPI_Comm* comm, int* err, const std::string &msg) | ||
| { | ||
| // It can be useful to have a custom error handler for debugging purposes. | ||
| // If not, MPI will use the default error handler which aborts the program, and | ||
| // it can be difficult to determine exactly where the error occurred. With a custom | ||
| // error handler you can at least set a breakpoint here to get a backtrace. | ||
| int rank; | ||
| MPI_Comm_rank(*comm, &rank); | ||
| char err_string[MPI_MAX_ERROR_STRING]; | ||
| int len; | ||
| MPI_Error_string(*err, err_string, &len); | ||
| const std::string error_msg = fmt::format( | ||
| "Reservoir coupling MPI error handler {} rank {}: {}", msg, rank, err_string); | ||
| // NOTE: The output to terminal vie stderr or stdout has been redirected to files for | ||
| // the slaves, see Main.cpp. So the following output will not be visible in the terminal | ||
| // if we are called from a slave process. | ||
| // std::cerr << error_msg << std::endl; | ||
| OpmLog::error(error_msg); // Output to log file, also shows the message on stdout for master. | ||
| MPI_Abort(*comm, *err); | ||
| } | ||
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| void custom_error_handler_slave_(MPI_Comm* comm, int* err, ...) | ||
| { | ||
| custom_error_handler_(comm, err, "slave"); | ||
| } | ||
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| void custom_error_handler_master_(MPI_Comm* comm, int* err, ...) | ||
| { | ||
| custom_error_handler_(comm, err, "master"); | ||
| } | ||
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| void setErrhandler(MPI_Comm comm, bool is_master) | ||
| { | ||
| MPI_Errhandler errhandler; | ||
| // NOTE: Lambdas with captures cannot be used as C function pointers, also | ||
| // converting lambdas that use ellipsis "..." as last argument to a C function pointer | ||
| // is not currently possible, so we need to use static functions instead. | ||
| if (is_master) { | ||
| MPI_Comm_create_errhandler(custom_error_handler_master_, &errhandler); | ||
| } | ||
| else { | ||
| MPI_Comm_create_errhandler(custom_error_handler_slave_, &errhandler); | ||
| } | ||
| // NOTE: The errhandler is a handle (an integer) that is associated with the communicator | ||
| // that is why we pass this by value below. And it is safe to free the errhandler after it has | ||
| // been associated with the communicator. | ||
| MPI_Comm_set_errhandler(comm, errhandler); | ||
| // Mark the error handler for deletion. According to the documentation: "The error handler will | ||
| // be deallocated after all the objects associated with it (communicator, window, or file) have | ||
| // been deallocated." So the error handler will still be in effect until the communicator is | ||
| // deallocated. | ||
| MPI_Errhandler_free(&errhandler); | ||
| } | ||
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| bool Seconds::compare_eq(double a, double b) | ||
| { | ||
| // Are a and b equal? | ||
| return std::abs(a - b) < std::max(abstol, reltol * std::max(std::abs(a), std::abs(b))); | ||
| } | ||
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| bool Seconds::compare_gt_or_eq(double a, double b) | ||
| { | ||
| // Is a greater than or equal to b? | ||
| if (compare_eq(a, b)) { | ||
| return true; | ||
| } | ||
| return a > b; | ||
| } | ||
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| bool Seconds::compare_gt(double a, double b) | ||
| { | ||
| // Is a greater than b? | ||
| return !compare_eq(a, b) && a > b; | ||
| } | ||
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| bool Seconds::compare_lt_or_eq(double a, double b) | ||
| { | ||
| // Is a less than or equal to b? | ||
| if (compare_eq(a, b)) { | ||
| return true; | ||
| } | ||
| return a < b; | ||
| } | ||
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| } // namespace ReservoirCoupling | ||
| } // namespace Opm |
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