System for reducing data transfer latency to a global queue by generating bit mask to identify selected processing nodes/units in multi-node data processing system

An article of manufacture embodied as a computer program product comprising:

• a non-transitory computer readable storage medium;
• and
• program code on the non-transitory computer readable storage medium that when executed by a first processing node of a data processing system having a plurality of processing nodes, each with at least one processing unit, provides a method for efficient dispatch/completion of a work element having multiple individual work items that are independently executable, the method comprising:
• selectively allocating the work element to specific processing nodes or processing units from among the plurality of processing nodes in order to complete execution of the work element, wherein the multiple individual work items may be independently executed by different ones of the plurality of processing nodes and by different ones of the processing units;
• generating an allocated processor unit (APU) bit mask that identifies at least one of the specific processing nodes or processing units that has been selectively allocated the work element, wherein the APU bit mask further comprises a bit for each processing node and processing unit from among the plurality of processing nodes;
• in response to generating the APU bit mask:
• placing the work element in a first entry of the GCQ;
• and
• associating the APU bit mask with the work element in the first entry of the GCQ;
• and
• in response to the GCQ receiving work requests from each of the plurality of processing nodes or the processing units, dispatching the multiple individual work items from the work element in the GCQ to only the selected specific processing nodes or processing units.