hardwaretopology.cpp File Reference

#include "gmxpre.h"
#include "hardwaretopology.h"
#include "config.h"
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <array>
#include <fstream>
#include <iterator>
#include <limits>
#include <sstream>
#include <string>
#include <string_view>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <sys/types.h>
#include "gromacs/hardware/cpuinfo.h"
#include "gromacs/utility/arrayref.h"
#include "gromacs/utility/gmxassert.h"
#include "gromacs/utility/stringutil.h"

Include dependency graph for hardwaretopology.cpp:

Description

Implements gmx::HardwareTopology.

Author

Erik Lindahl erik..nosp@m.lind.nosp@m.ahl@g.nosp@m.mail.nosp@m..com

Functions
std::unordered_set< int >	gmx::anonymous_namespace{hardwaretopology.cpp}::getAffinityList ()
void	gmx::anonymous_namespace{hardwaretopology.cpp}::translateCpuInfoLogicalProcessorsToMachine (ArrayRef< const CpuInfo::LogicalProcessor > logicalProcessors, HardwareTopology::Machine *machine)
	Utlility function to renumber and translate low-level APIC info to topology. More...
HardwareTopology::SupportLevel	gmx::anonymous_namespace{hardwaretopology.cpp}::parseCpuInfo (HardwareTopology::Machine *machine)
	Initialize machine data from basic information in cpuinfo. More...
int	gmx::anonymous_namespace{hardwaretopology.cpp}::detectLogicalProcessorCount ()
	Try to detect the number of logical processors. More...
std::vector< int >	gmx::anonymous_namespace{hardwaretopology.cpp}::parseCpuString (const std::string &cpuString)
	Parse cpu list (integers) from string separated by commas and ranges. More...
HardwareTopology::SupportLevel	gmx::anonymous_namespace{hardwaretopology.cpp}::parseSysFsCpuTopology (HardwareTopology::Machine *machine, const std::string &root="", ArrayRef< const int > allowedCpus={})
	Attempt to read basic topology from Linux sysfs interface. More...
std::string	gmx::anonymous_namespace{hardwaretopology.cpp}::findCgroupPath (ArrayRef< const std::string > mountPoints, ArrayRef< const std::string > subGroups, const std::string &root)
	Find the active cgroup path for the current process. More...
float	gmx::anonymous_namespace{hardwaretopology.cpp}::parseCgroup1CpuLimit (ArrayRef< const std::string > mountPoints, const std::string &root="")
	Parse cpu limits from cgroup version 1 file system on Linux. More...
float	gmx::anonymous_namespace{hardwaretopology.cpp}::parseCgroup2CpuLimit (ArrayRef< const std::string > mountPoints, const std::string &root="")
	Parse cpu limits from cgroup version 2 file system on Linux. More...
float	gmx::anonymous_namespace{hardwaretopology.cpp}::detectCpuLimit (const std::string &root="")
int	gmx::anonymous_namespace{hardwaretopology.cpp}::setMaxThreads (float cpuLimit, int topologyCpus, int systemCpus)
std::string	gmx::hwlocDescription ()
	Returns information for describing the hwloc support.