Mechanism for granting controlled access to a shared resource

A computer-readable storage device having instructions stored thereon, execution of which, by a computing device, causes the computing device to perform operations comprising:

• associating a first dedicated field of a data set to a first graphics processing unit (GPU) in a multi-GPU environment, wherein the first dedicated field is exclusively written to by the first GPU;
• associating a second dedicated field of the data set to a second GPU in the multi-GPU environment;
• associating a third field of the data set with a last GPU to request access to a shared resource, wherein the third field includes an ID of a last GPU of the first or second GPU to access the shared resource;
• writing data by the first GPU to the first dedicated field of the data set;
• storing the data set and the shared resource in a shared computer memory of the multi-GPU environment;
• and
• computing by the first GPU a value based on data read from the first and the second dedicated fields, and data read from the third field, the computed value being indicative of whether the first GPU can access the shared resource,
• wherein each of the first and second GPU includes logic facilitating independent access to the shared resource responsive to the computed value, the independent access being devoid of a single point of control.

A system comprising:

• a first dedicated field of a data set associated with a first application-specific integrated circuit (ASIC) in a multi-GPU environment, wherein the first dedicated field is exclusively written to by the first ASIC;
• a second dedicated field of the data set associated with a second ASIC in the multi-GPU environment;
• a third field of the data set associated with a last ASIC to request access to a shared resource, wherein the third field includes an ID of a last ASIC of the first or second ASIC to access the shared resource;
• a shared computer memory of the multi-GPU environment that stores the shared resource and the data set partitioned into fields;
• the first ASIC configured to write data to the first dedicated field of the data set and compute a first value based on data read from the first and second dedicated fields, and data read from the third field, the computed first value being indicative of whether the first ASIC accesses the shared resource;
• and
• the second ASIC configured to write data to the second dedicated field of the data set and compute a second value based on data read from the first and second dedicated fields,
• wherein each of the first and second ASICs includes logic facilitating independent access to the shared resource responsive to the computed first and second values, respectively, the independent access being devoid of a single point of control.

A system comprising:

• a first dedicated field of a data set associated with a first application-specific integrated circuit (ASIC) in a plurality of ASIC environment, wherein the first dedicated field is exclusively written to by the first ASIC;
• a second dedicated field of the data set associated with a second ASIC in the plurality of ASIC environment;
• a third field of the data set associated with a last ASIC to request access to a shared resource, wherein the third field includes an ID of the a last one of the first or second ASIC to access the shared resource;
• a shared memory of the plurality of ASIC environment that stores a the shared resource and the data set partitioned into fields;
• the first ASIC configured to write data to the first dedicated field of the data set;
• and
• the first ASIC configured to compute a value based on data read from the first and second dedicated fields, and data read from the third field, the computed value being indicative of whether the first ASIC accesses the shared resource,
• wherein each of the first and second ASICs includes logic facilitating independent access to the shared resource responsive to the computed value, the independent access being devoid of a single point of control.