Core affinity bitmask translation

A device effective to generate a translated core affinity bitmask of a multicore processor, the device comprising:

• a device processor effective to:
• receive a first request, wherein the first request includes a core affinity bitmask, the core affinity bitmask identifies at least a first core and a second core of the multicore processor;
• determine that the first core is at least partially inoperative;
• in response to the determination that the first core is at least partially inoperative:
• determine that the first core and the second core are both part of a group of cores in a table, wherein the table includes groups of two or more cores and a corresponding affinity between or among the cores in each group;
• identify an affinity that corresponds to the group of cores in the table;
• determine that the identified affinity is an affinity between the first core and the second core;
• based at least in part on the affinity, identify a third core and a fourth core of the multicore processor;
• generate the translated core affinity bitmask in response to the identification of the third core and the fourth core, wherein the translated core affinity bitmask identifies at least the third core and the fourth core, and wherein the translated core affinity bitmask is different from the core affinity bitmask;
• and
• generate a second request that includes the translated core affinity bitmask.

A multicore processor, comprising:

• a first core;
• a second core;
• a third core;
• a fourth core;
• and
• a dispatcher configured in communication with the first core, the second core, the third core, and the fourth core;
• wherein the dispatcher is effective to:
• receive a first request, wherein the first request includes a core affinity bitmask, the core affinity bitmask identifies at least the first core and the second core of the multicore processor;
• determine that the first core is at least partially inoperative;
• in response to the determination that the first core is at least partially inoperative:
• determine that the first core and the second core are both part of a group of cores in a table, wherein the table includes groups of two or more cores and a corresponding affinity between or among the cores in each group;
• identify an affinity that corresponds to the group of cores in the table;
• determine that the identified affinity is an affinity between the first core and the second core;
• based at least in part on the affinity between the first core and the second core, identify a third core and a fourth core of the multicore processor;
• generate the translated core affinity bitmask in response to the identification of the third core and the fourth core, wherein the translated core affinity bitmask identifies at least the third core and the fourth core, and wherein the translated core affinity bitmask is different from the core affinity bitmask;
• and
• generate a second request that includes the translated core affinity bitmask.

A method to generate a translated core affinity bitmask for a multicore processor, the method comprising, by a dispatcher:

• receiving a first request to execute a first task on a first core and a second task on a second core, wherein the first request includes a core affinity bitmask that identifies at least the first core and the second core of the multicore processor;
• determining a property of the first core;
• determining that the first core is at least partially inoperative;
• in response to determining that the first core is at least partially inoperative:
• determining that the first core and the second core are both part of a group of cores in a table, wherein the table includes groups of two or more cores and a corresponding property between or among the cores in each group;
• identifying a property corresponding to the group of cores in the table;
• based on the determination that the first core is at least partially inoperative, and based on the identified property, identifying a third core of the multicore processor, wherein the third core has the property;
• generating the translated core affinity bitmask in response to the identification of the third core, wherein the translated core affinity bitmask identifies at least the second core and the third core so that the first task is executed on the third core and the second task is executed on the second core, and wherein the translated core affinity bitmask is different from the core affinity bitmask;
• and
• generating a second request that includes the translated core affinity bitmask.