Nvidia Corporation

Other

Michael F Harris

John H Edmondson

Steven E Molnar

Robert Anthony Alfieri

James M Van Dyke

Brian D Hutsell

Sequential write operations to a unit of compressed memory, known as a compression tile, are examined to see if the same compression tile is being written. If the same compression tile is being written, the sequential write operations are coalesced into a single write operation and the entire compression tile is overwritten with the new data. Coalescing multiple write operations into a single write operation improves performance, because it avoids the read-modify-write operations that would otherwise be needed.

Coalescing to avoid read-modify-write during compressed data operations

Systems and methods for determining a compression tag state prior to memory client arbitration may reduce the latency for memory accesses. A compression tag is associated with each portion of a surface stored in memory and indicates whether or not the data stored in each portion is compressed or not. A client uses the compression tags to construct memory access requests and the size of each request is based on whether or not the portion of the surface to be accessed is compressed or not. When multiple clients access the same surface the compression tag reads are interlocked with the pending memory access requests to ensure that the compression tags provided to each client are accurate. This mechanism allows for memory bandwidth optimizations including reordering memory access requests for efficient access.

Compression tag state interlock

Write operations to a unit of compressible memory, known as a compression tile, are examined to see if data blocks to be written completely cover a single compression tile. If the data blocks completely cover a single compression tile, the write operations are coalesced into a single write operation and the single compression tile is overwritten with the data blocks. Coalescing multiple write operations into a single write operation improves performance, because it avoids the read-modify-write operations that would otherwise be needed.

Early compression tag lookup for memory accesses

A treatment for the persons infected with viruses such as HIV. The method takes advantage of the anesthetic membrane effect brought about by certain gases under pressure. A patient infected with HIV, for example, is placed in a pressurized chamber and exposed to one or more gases under pressure in this environment, molecules or compounds bind to specific attachment sites on surfaces of host cells and on the virus. These attachment sites are the same sites that are required by the virus to attach to host cells during the virus's replication process. The result is that viruses are prevented from replicating. In the case of HIV, without replication, the virus is also prevented from mutating. This deleterious effect on the virus allows the body's immune system to reconstitute itself in numbers sufficient to cause clinical remission. The present method generally comprises the steps of selecting the gases, pressures and duration to be used inside a pressurized chamber, and exposing the patient to the selected conditions.

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Raleigh, NC, United States of America

Michael F Harris