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Avoid atomic false sharing in RunQueue

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This commit is contained in:
Eugene Zhulenev
2024-08-01 17:41:16 +00:00
committed by Rasmus Munk Larsen
parent 0b646f3f36
commit fd98cc49f1
3 changed files with 47 additions and 31 deletions
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9
Eigen/src/Core/util/ConfigureVectorization.h
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@@ -38,6 +38,15 @@
#define EIGEN_ALIGNOF(x) alignof(x)
#endif
// Align to the boundary that avoids false sharing.
// https://en.cppreference.com/w/cpp/thread/hardware_destructive_interference_size
#ifdef __cpp_lib_hardware_interference_size
#define EIGEN_ALIGN_TO_AVOID_FALSE_SHARING EIGEN_ALIGN_TO_BOUNDARY(std::hardware_destructive_interference_size)
#else
// Overalign for the cache line size of 128 bytes (Apple M1)
#define EIGEN_ALIGN_TO_AVOID_FALSE_SHARING EIGEN_ALIGN_TO_BOUNDARY(128)
#endif
// If the user explicitly disable vectorization, then we also disable alignment
#if defined(EIGEN_DONT_VECTORIZE)
#if defined(EIGEN_GPUCC)