/usr/include/gromacs/thread_mpi/hwinfo.h is in gromacs-dev 4.6.5-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This source code file is part of thread_mpi.
Written by Sander Pronk, Erik Lindahl, and possibly others.
Copyright (c) 2009, Sander Pronk, Erik Lindahl.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1) Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2) Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3) Neither the name of the copyright holders nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY US ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL WE BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
If you want to redistribute modifications, please consider that
scientific software is very special. Version control is crucial -
bugs must be traceable. We will be happy to consider code for
inclusion in the official distribution, but derived work should not
be called official thread_mpi. Details are found in the README & COPYING
files.
*/
#ifndef _TMPI_HWINFO_H_
#define _TMPI_HWINFO_H_
/*! \file
\brief CPU/core/HT count function.
*/
/*! \brief Determine number of hardware threads that can be run simultaneously
Returns the total number of cores and SMT threads that can run.
\returns The maximum number of threads that can run simulataneously.
If this number cannot be determined for the current architecture,
-1 is returned.
*/
TMPI_EXPORT
int tMPI_Get_hw_nthreads(void);
/*! \brief Determine the recommended number of hardware threads to run on
Returns the total number of cores and SMT threads to run on. This is
equal to the number of hardware threads available, or 1 if the number
can't be determined, or if there are no atomics for this platform.
\returns The maximum number of threads to run on.
*/
TMPI_EXPORT
int tMPI_Get_recommended_nthreads(void);
#endif
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