Cache management in a stream computing environment that uses a set of many-core hardware processors

A system for cache management in a stream computing environment that uses a set of many-core hardware processors to process a stream of tuples by a plurality of processing elements which operate on the set of many-core hardware processors, the system comprising:

• a memory having a set of computer readable instructions, and
• a processor for executing the set of computer readable instructions, the set of computer readable instructions including:
• receiving the stream of tuples to be processed by the plurality of processing elements which operate on the set of many-core hardware processors;
• determining, based on a cache factor associated with the set of many-core hardware processors, a tuple-processing hardware-route on the set of many-core hardware processors;
• routing, based on the tuple-processing hardware-route on the set of many-core hardware processors, the stream of tuples;
• processing, utilizing the set of many-core hardware processors, the stream of tuples by the plurality of processing elements which operate on the set of many-core hardware processors;
• computing, for cache management in the stream computing environment, a first cache utilization factor for a first cache of a first core of the set of many-core hardware processors;
• computing, for cache management in the stream computing environment, a second cache utilization factor for a second cache of the first core of the set of many-core hardware processors;
• resolving, by comparing the first cache utilization factor for the first cache of the first core of the set of many-core hardware processors with the second cache utilization factor for the second cache of the first core of the set of many-core hardware processors, the tuple-processing hardware-route to prioritize utilization of the first cache of the first core of the set of many-core hardware processors with respect to the second cache of the first core of the set of many-core hardware processors;
• and
• prioritizing, pertaining to processing the stream of tuples utilizing the set of many-core hardware processors, the first cache of the first core of the set of many-core hardware processors with respect to the second cache of the first core of the set of many-core hardware processors.

A computer program product for cache management in a stream computing environment that uses a set of many-core hardware processors to process a stream of tuples by a plurality of processing elements which operate on the set of many-core hardware processors, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by a processor to cause the processor to perform a method comprising:

• receiving the stream of tuples to be processed by the plurality of processing elements which operate on the set of many-core hardware processors;
• determining, based on a cache factor associated with the set of many-core hardware processors, a tuple-processing hardware-route on the set of many-core hardware processors;
• routing, based on the tuple-processing hardware-route on the set of many-core hardware processors, the stream of tuples;
• processing, utilizing the set of many-core hardware processors, the stream of tuples by the plurality of processing elements which operate on the set of many-core hardware processors;
• computing, for cache management in the stream computing environment, a first cache utilization factor for a first cache of a first core of the set of many-core hardware processors;
• computing, for cache management in the stream computing environment, a second cache utilization factor for a second cache of the first core of the set of many-core hardware processors;
• resolving, by comparing the first cache utilization factor for the first cache of the first core of the set of many-core hardware processors with the second cache utilization factor for the second cache of the first core of the set of many-core hardware processors, the tuple-processing hardware-route to prioritize utilization of the first cache of the first core of the set of many-core hardware processors with respect to the second cache of the first core of the set of many-core hardware processors;
• and
• prioritizing, pertaining to processing the stream of tuples utilizing the set of many-core hardware processors, the first cache of the first core of the set of many-core hardware processors with respect to the second cache of the first core of the set of many-core hardware processors.