The accepted answer is no good. The question describes an issue with synced folders, not shared folders. The proposed solution would have no effect on an rsynced (not shared) folder. And even if the OP was using a shared folder, the accepted answer’s suggestion is something that had already been integrated into vagrant as of … Read more
Short answer: In an out-of-order processor the load-store queue is used to track and enforce memory ordering constraints. Processors such as the Alpha 21264 have the necessary hardware to prevent dependent load reordering, but enforcing this dependency could add overhead for inter-processor communication. Long answer: Background on dependence tracking This is probably best explained using … Read more
The answer to the short question is “No”. Warp level branch divergence around a __syncthreads() instruction will cause a deadlock and result in a kernel hang. Your code example is not guaranteed to be safe or correct. The correct way to implement the code would be like this: __global__ void kernel(…) if (tidx < N) … Read more
The Theory In theory, when a thread tries to lock a mutex and it does not succeed, because the mutex is already locked, it will go to sleep, immediately allowing another thread to run. It will continue to sleep until being woken up, which will be the case once the mutex is being unlocked by … Read more