Abstract: Provided are systems, methods, and apparatuses for timestep shared memory multiprocessing based on tracking table mechanisms. In one or more examples, the systems, devices, and methods include determining a first node writes application data to a memory, obtaining a data address of the memory associated with the application data, and generating an index of the data address based on hashing the data address in a hash function. In one or more examples, the systems, devices, and methods include generating a tracking entry based on the first node writing application data to the memory, storing the index and the tracking entry in a bucket of a hash table, and detecting an access violation to the application data based on the tracking entry indicating a node other than the first node modifies the application data.

Abstract: A computer system including a home node having global shared memory and remote nodes configured to access the global shared memory. The home node contains a modification tracker entry and a timestep count entry associated with each cache block. The home node is configured to: set a timestep counter value in the timestep count entry; modify a word in one of the cache blocks in response to a first write operation from one of the remote nodes; set a first modification tracker value in response to the first write operation; modify a word in the one of the cache blocks in response to a second write operation from one of the remote nodes; set a second modification tracker value in response to the second write operation; and perform a violation check in response to a configuration status register value being equal to the timestep counter value.

Abstract: A system and method for cache management. In some embodiments, a system includes: a lower-level cache; a first upper-level cache; and a second upper-level cache, the lower-level cache, the first upper-level cache, and the second upper-level cache being configured: to store first metadata of a cache line, in the first upper-level cache, the first metadata indicating that the cache line is in a partial state, the partial state indicating that at least two words in the cache line are in different permission states.

Abstract: Provided are systems, methods, and apparatuses for timestep shared memory multiprocessing based on tracking table mechanisms. In one or more examples, the systems, devices, and methods include determining a first node writes application data to a memory, obtaining a data address of the memory associated with the application data, and generating an index of the data address based on hashing the data address in a hash function. In one or more examples, the systems, devices, and methods include generating a tracking entry based on the first node writing application data to the memory, storing the index and the tracking entry in a bucket of a hash table, and detecting an access violation to the application data based on the tracking entry indicating a node other than the first node modifies the application data.

Abstract: A computer system including a home node having global shared memory and remote nodes configured to access the global shared memory. The home node contains a modification tracker entry and a timestep count entry associated with each cache block. The home node is configured to: set a timestep counter value in the timestep count entry; modify a word in one of the cache blocks in response to a first write operation from one of the remote nodes; set a first modification tracker value in response to the first write operation; modify a word in the one of the cache blocks in response to a second write operation from one of the remote nodes; set a second modification tracker value in response to the second write operation; and perform a violation check in response to a configuration status register value being equal to the timestep counter value.