Abstract: A system for accessing memory is disclosed. The system comprises a first communication interface configured to receive from an external processor a request for data. The system further comprises a second communication interface configured to communicate with an external memory module to provide the external processor indirect access to the data stored on the external memory module. The system further comprises a memory-side cache configured to cache the data obtained from the external memory module. The cache comprises a plurality of cache entries. The data obtained from the external memory is cached in one of the cache entries, and wherein the one of the cache entries comprises a plurality of cache data sectors with corresponding individual cache data sector valid status indicators and corresponding individual cache data sector modified status indicators and a common tag field for the plurality of cache data sectors.

Abstract: A system including a computer storage and a processor is described. The computer storage is configured to identify a stored data as protected. The processor is configured to perform speculative execution. To perform the speculative execution, the processor is configured to determine, in response to the speculative execution of an instruction to read the stored data, whether the stored data is identified as protected. In response to a determination that the stored data attempted to be read during the speculative execution is protected, the processor is configured to disallow during the speculative execution immediate successful completion of the instruction to read the stored data.

Abstract: A system including a computer storage and a processor is described. The computer storage is configured to identify a stored data as protected. The processor is configured to perform speculative execution. To perform the speculative execution, the processor is configured to determine, in response to the speculative execution of an instruction to read the stored data, whether the stored data is identified as protected. In response to a determination that the stored data attempted to be read during the speculative execution is protected, the processor is configured to disallow during the speculative execution immediate successful completion of the instruction to read the stored data.

Abstract: The disclosure is directed to a cache management system (“system”) for storing data in a cache of a computer system in a compact form. The system identifies multiple instances of a candidate value stored in a primary cache and stores those instances as a single value in a value cache. The system stores multiple pointers to the candidate value in the value cache, e.g., as many as the number of occurrences of the candidate value in the primary cache, each of which corresponds to an address in a memory of the computer system storing an instance of the primary cache candidate value. By storing multiple instances of the candidate value as a single instance, the system reduces the cache pollution and the memory bandwidth and facilitates storing more number of distinct values in the primary cache of a given size.

Abstract: The disclosure is directed to a cache management system (“system”) for storing data in a cache of a computer system in a compact form. The system identifies multiple instances of a candidate value stored in a primary cache and stores those instances as a single value in a value cache. The system stores multiple pointers to the candidate value in the value cache, e.g., as many as the number of occurrences of the candidate value in the primary cache, each of which corresponds to an address in a memory of the computer system storing an instance of the primary cache candidate value. By storing multiple instances of the candidate value as a single instance, the system reduces the cache pollution and the memory bandwidth and facilitates storing more number of distinct values in the primary cache of a given size.