A memory barrier is a special processor instruction that imposes restrictions on the order in which memory accesses become visible to other processors/cores in a multi-processor or multi-core system.
8.1.2 Bus Locking Intel 64 and IA-32 processors provide a LOCK# signal that is asserted automatically during certain critical memory operations to …
c++ multithreading x86 atomic memory-barriersI read the "Intel Optimization guide Guide For Intel Architecture". However, I still have no idea about when should I …
c++ multithreading x86 intrinsics memory-barriersThe Linux kernel uses lock; addl $0,0(%%esp) as write barrier, while the RE2 library uses xchgl (%0),%0 as write barrier. What's …
assembly x86 memory-barriersUnlike barrier() (which I think I understand), mem_fence() does not affect all items in the work group. The OpenCL …
opencl gpgpu memory-barriers barrier memory-fencesA coworker and I write software for a variety of platforms running on x86, x64, Itanium, PowerPC, and other 10 year …
c++ multithreading mutex volatile memory-barriersAfter reading more blogs/articles etc, I am now really confused about the behavior of load/store before/after memory …
java multithreading memory-barriers java-memory-model