utility.hpp File Reference

#include "alpaka/api/host/hwloc/hwlocConfig.hpp"
#include "alpaka/api/host/sysInfo.hpp"
#include "alpaka/core/util.hpp"
#include "alpaka/unused.hpp"
#include <fstream>
#include <optional>
#include <sstream>
#include <string>
#include <thread>

Go to the source code of this file.

Namespaces
namespace	alpaka
	main alpaka namespace.
namespace	alpaka::onHost
	Functionality which is usable on the host CPU controller thread.
namespace	alpaka::onHost::internal
namespace	alpaka::onHost::internal::hwloc
	Implement functions required to set thread affinity and pin memory.

Functions
size_t	alpaka::onHost::internal::hwloc::getFreeGlobalMemBytes (uint32_t numaIdx)
	Return the number of free bytes in the numa domain.
size_t	alpaka::onHost::internal::hwloc::getMemCapacityBytes (uint32_t numaIdx)
	Return the number of bytes of the numa domain.
uint32_t	alpaka::onHost::internal::hwloc::getNumCores (uint32_t numaIdx)
	Return the number of cores which has direct access to the numa domain.
uint32_t	alpaka::onHost::internal::hwloc::getNumNumaDomains ()
	Get the number of NUMA domains.
std::optional< size_t >	alpaka::onHost::internal::hwloc::parseNodeMemInfoValueBytes (unsigned osNodeIndex, std::string_view key)
	Parse the OS NUMA information.
template<typename T>
void	alpaka::onHost::internal::hwloc::pinPointer (T *const ptr, size_t bytes, uint32_t numaIdx)
	Set the NUMA domain for the memory range described by ptr and bytes.
void	alpaka::onHost::internal::hwloc::setThreadAffinity (uint32_t numaIdx)
	Set the affinity of the current thread to all cores of the NUMA domain.

Variables
constexpr uint32_t	alpaka::onHost::internal::hwloc::allNumaDomains = std::numeric_limits<uint32_t>::max()
	Constant to select all NUMA domains.