A router using this scheme has fewer memory accesses when executing IP lookup than a router designed according to the Trie [E. Fredkin, Trie Memory, Communication of the ACM 3 (1960) 490 500], Patricia [K.
A routing buffer is employed to cache packet arrivals that suffer memory access contentions when visiting nodes of the prefix tries.
By carefully considering memory access locality when dividing the workload among blocks of threads, the GPU's cache is used more efficiently, making more effective use of the available memory bandwidth.
An interrupt can notify the processor when an analog-to-digital converter (ADC) has new data, when a timer rolls over, when a direct memory access (DMA) transfer is complete, when another processor wants to communicate, or when almost any asynchronous event happens.
Moreover, to improve the overall performance, memory accesses should be coalesced, which means a higher memory throughput can be achieved when memory access is consecutive and bank conflicts during shared memory access are avoided.
By definition, a cache is a set of memory locations that can store something for fast access when the application actually needs it.
Coalesced memory access is a key performance consideration when programming on GPUs (see the CUDA C Best Practices Guide [ 25]).
An alternate FFT has also been proposed in [12], which optimizes FFT's performance via three efficient memory access schemes:(1) shared memory is used when the size of data set is small, (2) coalesced global memory access scheme is employed for large size, and (3) a hierarchical memory access method is to compute large data stream's FFT by combining the FFTs of smaller data with share memory.
Ensure "coalesced access" when reading or writing global memory, or the operation will be auto-serialized.
When there are more computation instructions per memory access, performance climbs more steeply with additional threads.
