公开(公告)号：US10402323B2

公开(公告)日：2019-09-03

申请号：US14925920

申请日：2015-10-28

Applicant: NVIDIA CORPORATION

Inventor： Praveen Krishnamurthy ,  Peter B. Holmquist ,  Wishwesh Gandhi ,  Timothy Purcell ,  Karan Mehra ,  Lacky Shah

IPC: G06F12/08 ,  G06F12/0802 ,  G06F3/06

Abstract: In one embodiment of the present invention a cache unit organizes data stored in an attached memory to optimize accesses to compressed data. In operation, the cache unit introduces a layer of indirection between a physical address associated with a memory access request and groups of blocks in the attached memory. The layer of indirection—virtual tiles—enables the cache unit to selectively store compressed data that would conventionally be stored in separate physical tiles included in a group of blocks in a single physical tile. Because the cache unit stores compressed data associated with multiple physical tiles in a single physical tile and, more specifically, in adjacent locations within the single physical tile, the cache unit coalesces the compressed data into contiguous blocks. Subsequently, upon performing a read operation, the cache unit may retrieve the compressed data conventionally associated with separate physical tiles in a single read operation.

公开(公告)号：US09934145B2

公开(公告)日：2018-04-03

申请号：US14925922

申请日：2015-10-28

Applicant: NVIDIA CORPORATION

Inventor： Praveen Krishnamurthy ,  Peter B. Holmquist ,  Wishwesh Gandhi ,  Timothy Purcell ,  Karan Mehra ,  Lacky Shah

IPC: G06F12/08 ,  G06F12/0802 ,  G06F3/06

CPC classification number: G06F12/0802 ,  G06F3/0608 ,  G06F3/064 ,  G06F3/0673 ,  G06F12/0842 ,  G06F12/0844 ,  G06F12/0848 ,  G06F12/0851 ,  G06F12/0853 ,  G06F12/0895 ,  G06F2212/1016 ,  G06F2212/401 ,  G06F2212/608

Abstract: In one embodiment of the present invention a cache unit organizes data stored in an attached memory to optimize accesses to compressed data. In operation, the cache unit introduces a layer of indirection between a physical address associated with a memory access request and groups of blocks in the attached memory. The layer of indirection—virtual tiles—enables the cache unit to selectively store compressed data that would conventionally be stored in separate physical tiles included in a group of blocks in a single physical tile. Because the cache unit stores compressed data associated with multiple physical tiles in a single physical tile and, more specifically, in adjacent locations within the single physical tile, the cache unit coalesces the compressed data into contiguous blocks. Subsequently, upon performing a read operation, the cache unit may retrieve the compressed data conventionally associated with separate physical tiles in a single read operation.