This obviates the need for fine-grain, per-object locking, as well as the need for a thread-safe, concurrent garbage collector. This is significant when you factor in how Python's scoping works at a language level: Python code executing in a parallel thread can freely access any non-local...
The following basic example shows two concurrent tasks that each increment a shared counter variable. c++ Copy volatile long count = 0L; Concurrency::parallel_invoke( [&count] { for(int i = 0; i < 100000000; ++i) InterlockedIncrement(&count); }, [&count] { for(int i = 0; i < ...
However, concurrent access of the shared memory location may cause a conflict. The resolution of such memory conflicts must deal with the so-called memory consistency model of the underlied architecture model — a field pioneered by Leslie Lamport in 1978 [31] — at about the same time as ...
For mutual exclusion, only one of a number of contending concurrent activities at a time 27 The Landscape of Parallel Computing Research: A View From Berkeley should be allowed to update some shared mutable state, but typically, the order does not matter. For producer-consumer synchronization, a...
As previously noted, one of the techniques that may be employed in the systems described herein is dynamic spatial scheduling. As noted above, the resource management components described herein may aim for concurrent runtime systems to leave exactly one runnable software thread pinned to each hardwa...
The concurrent DMA and CPU operations over the links reduce communication overhead for large amounts of data. The apex node has two free links that can be used for data I/O. Also, the children can pass data among themselves without slowing down the parent nodes. This is an advantage in ...
The concurrent DMA and CPU operations over the links reduce communication overhead for large amounts of data. The apex node has two free links that can be used for data I/O. Also, the children can pass data among themselves without slowing down the parent nodes. This is an advantage in ...
The use of OpenMP together with CUDA, for example, enables the concurrent processing on the CPU and GPU sides, increasing GPU utilization and reducing the overall execution time of the algorithm [63]. 5.2 Discrete Optimization Some algorithms of the SI family were tailored specifically to solve ...
7.3.3 Event-based Notification Mechanisms for Concurrent Query Processing. There are two ways an application can detect completed requests in the Completion Queue. One is polling, where the function returns immediately regardless of whether there are any entries in the Completion Queue. The ...
The compiler, to the extent possible, avoids scheduling operations that cause bank stalls, but the occurrence of such an event is not fatal to program execution as are concurrent calls to the same memory controller. The bank stall mechanism is discussed in more detail below. The Bus ...