Abstract: An apparatus and method for filtering biased conditional branches in a branch predictor in favor of non-biased conditional branches are disclosed. Biased conditional branches, which are consistently skewed toward one direction or outcome, are filtered such that an increased number of non-biased conditional branches which resolve in both directions may be considered. As a result, more useful branches may be captured over larger distances, thereby providing correlations deeper in a global history. In addition, by tracking only the latest occurrences of non-biased conditional branches using a recency stack structure, even more distant branch correlations may be made.

Abstract: A computer architecture addresses intermittent memory faults by exploiting redundancy inherent in a hierarchical memory structure, for example, as data moves through various cache levels and registers before use by the processor. Accesses to data from faulted memory areas is diverted to a secondary memory structure holding that data and the secondary memory structure is flagged to increase the persistence of the stored data used for patching against normal updating policies.

Abstract: A computer architecture addresses intermittent memory faults by exploiting redundancy inherent in a hierarchical memory structure, for example, as data moves through various cache levels and registers before use by the processor. Accesses to data from faulted memory areas is diverted to a secondary memory structure holding that data and the secondary memory structure is flagged to increase the persistence of the stored data used for patching against normal updating policies.

Abstract: Hardening of an integrated circuit such as a GPU processor to soft errors caused by particle strikes is applied selectively to the set of devices according to the magnitude of error resulting from this soft error for the particular device. This approach differs from approaches that protect all devices, all devices likely to produce an output error, or all devices that are vulnerable.

Abstract: Aspects of the present invention provide an apparatus and method for filtering biased conditional branches in a branch predictor in favor of non-biased conditional branches. Biased conditional branches, which are consistently skewed toward one direction or outcome, are filtered such that an increased number of non-biased conditional branches which resolve in both directions may be considered. As a result, more useful branches may be captured over larger distances, thereby providing correlations deeper in a global history to provide greater prediction accuracy. In addition, by tracking only the latest occurrences of non-biased conditional branches using a recency stack structure, even more distant branch correlations may be made.

Abstract: Hardening of an integrated circuit such as a GPU processor to soft errors caused by particle strikes is applied selectively to the set of devices according to the magnitude of error resulting from this soft error for the particular device. This approach differs from approaches that protect all devices, all devices likely to produce an output error, or all devices that are vulnerable.