memory-barriers
In OpenCL, what does mem_fence() do, as opposed to barrier()?
Unlike barrier() (which I think I understand), mem_fence() does not affect all items in the work group.The OpenCL spec says (section 6.11.10), for mem_fence():[详细]
2023-04-11 17:58 分类：问答Memory model ordering and visibility?
I tried looking for details on this, I even read the standard on mutexes and atomics... but still I couldnt understand the C++11 memory model visibility guarantees.[详细]
2023-04-05 21:17 分类：问答Out of Order Execution and Memory Fences
I know开发者_开发百科 that modern CPUs can execute out of order, However they always retire the results in-order, as described by wikipedia.[详细]
2023-04-03 06:48 分类：问答Context-switch and thread execution on different CPU cores
From my another question on SO I found out that its possible that following simple method void B() { if (_complete)[详细]
2023-03-31 21:15 分类：问答Threads synchronization. How exactly lock makes access to memory 'correct'?
First of all, I know that lock{} is synthetic sugar for Monitor class. (oh, syntactic sugar) I was playing with simple multithreading problems and discovered that cannot totally understand how lockng[详细]
2023-03-29 05:48 分类：问答Are mutex lock functions sufficient without volatile?
A coworker and I write software for a variety of platforms running on x86, x64, Itanium, PowerPC, and other 10 year old server CPUs.[详细]
2023-03-22 22:29 分类：问答Race condition on x86
Could someo开发者_Python百科ne explain this statement: shared variables x = 0, y = 0 Core 1Core 2 x = 1;y = 1;[详细]
2023-03-18 18:21 分类：问答Memory barrier generators
Reading Joseph Albahari\'s threading tutorial, the following are mentioned as generators of memory barriers:[详细]
2023-03-17 14:54 分类：问答What is the behavior of __faststorefence?
In regards to this question, I\'m interested only in x86 and x86-64. For MSVC 2005, the documentation for __faststore开发者_运维知识库fence says: \"Guarantees that every preceding store is globally v[详细]
2023-03-15 21:58 分类：问答Fences in C++0x, guarantees just on atomics or memory in general
The C++0x draft has a notion of fences which seems very distinct from a CPU/chip level notion of fences, or say what the linux kernel guys expect of fences. The question is whether the draft really im[详细]
2023-02-22 06:05 分类：问答
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