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Remove reliance on MPI_Comm_rank (#56)
* Remove reliance on MPI_Comm_rank - read /proc/<PID>/tasks/<PID>/children of parent process to deduce the rank - Old format relied on user calling MPI_Comm_rank(MPI_COMM_WORLD, ...) - if MPI_Comm_rank called with subcommunicators only, multiple ranks would write to same file * Tweak mpi example
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2022 Advanced Micro Devices, Inc. All Rights Reserved. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
|
|
||
| #include "library/mproc.hpp" | ||
| #include "library/debug.hpp" | ||
| #include "library/timemory.hpp" | ||
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|
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| #include <fstream> | ||
| #include <set> | ||
| #include <sstream> | ||
| #include <string> | ||
| #include <unistd.h> | ||
|
|
||
| namespace omnitrace | ||
| { | ||
| namespace mproc | ||
| { | ||
| std::set<int> | ||
| get_concurrent_processes(int _ppid) | ||
| { | ||
| std::set<int> _children = {}; | ||
| if(_ppid > 0) | ||
| { | ||
| auto _inp = JOIN('/', "/proc", _ppid, "task", _ppid, "children"); | ||
| std::ifstream _ifs{ _inp }; | ||
| if(!_ifs) | ||
| { | ||
| OMNITRACE_VERBOSE_F(0, "Warning! File '%s' cannot be read\n", _inp.c_str()); | ||
| return _children; | ||
| } | ||
|
|
||
| while(_ifs) | ||
| { | ||
| int _v = -1; | ||
| _ifs >> _v; | ||
| if(!_ifs.good() || _ifs.eof()) break; | ||
| if(_v < 0) continue; | ||
| _children.emplace(_v); | ||
| } | ||
| } | ||
| return _children; | ||
| } | ||
|
|
||
| int | ||
| get_process_index(int _pid, int _ppid) | ||
| { | ||
| auto _children = get_concurrent_processes(_ppid); | ||
| for(auto itr = _children.begin(); itr != _children.end(); ++itr) | ||
| { | ||
| if(*itr == _pid) return std::distance(_children.begin(), itr); | ||
| } | ||
| return -1; | ||
| } | ||
| } // namespace mproc | ||
| } // namespace omnitrace |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2022 Advanced Micro Devices, Inc. All Rights Reserved. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
|
|
||
| #pragma once | ||
|
|
||
| #include <set> | ||
| #include <unistd.h> | ||
|
|
||
| namespace omnitrace | ||
| { | ||
| namespace mproc | ||
| { | ||
| // get the concurrent processes from /proc/<PPID>/task/<PPID>/children | ||
| std::set<int> | ||
| get_concurrent_processes(int _ppid = getppid()); | ||
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||
| int | ||
| get_process_index(int _pid = getpid(), int _ppid = getppid()); | ||
| } // namespace mproc | ||
| } // namespace omnitrace |