RSVP/sub TM/ : an automotive vector processor

Streaming Data Movement for Real-Time Image Analysis

“…In [7,8], stream register files are used to store and assemble data as contiguous streams. In [9,10,11], dedicated stream units prefetch and gather stream elements from different memory locations. These stream units use stream descriptors, which are described later in this paper.…”

“…Fig. 7 shows a block diagram of RSVP, a detailed description of its internal architecture and programming model is beyond the scope of this paper, but more information can be found in [9,10]. Stream descriptors are used in the Vector Stream Unit (VSU) to prefetch data ahead of the processing unit.…”

“…While prior research has focused primarily on the computing aspect of streaming (i.e. the processors) [6][7][8][9][10][11][12][13], this paper presents a study of the movement of data to deliver high processing throughput. The streaming computation model leverages the deterministic memory accesses to improve bandwidth utilization.…”

Streaming I/O for Imaging Applications

“…It complements the data processing instructions of the host, but does not participate in the control flow. In programming the RSVP™ architecture, the user describes the shape and location of input and output streams in memory and describes a data flow graph of the operations to be performed, thus allowing programmers to provide mechanisms that exploit data and instruction level parallelism [6,8].…”

“…These access patterns are fixed and known at compile time so it is possible to minimize data movement and overlap it with computation. Speedups from 2 to 20 over a scalar processor for stream kernels and applications have been found using the stream computation model [6,8].…”