Parallel processing device and operating method thereof

An operating method of a parallel processing device including one or more group processors, each of which includes a plurality of instance processors for processing a kernel execution instance for a predetermined parallel program model-based kernel in which each of the plurality of instance processors includes a register storing context reference information including an identifier of a group processor to which the instance processor belongs and an identifier of the instance processor, the operating method comprising:

• triggering, by each of the instance processors, execution of the kernel by reading a kernel execution instance stored in a memory;
• reading, by each of the instance processors, execution context data, which is stored in the memory for execution of the kernel, using the context reference information;
• and
• executing, by each of the instance processors, the kernel using the read execution context data.