US 2018/0121357 A1 · ACCELERATOR SHARING

Abstract

Disclosed aspects relate to accelerator sharing among a plurality of processors through a plurality of coherent proxies. The cache lines in a cache associated with the accelerator are allocated to one of the plurality of coherent proxies. In a cache directory for the cache lines used by the accelerator, the status of the cache lines and the identification information of the coherent proxies to which the cache lines are allocated are provided. Each coherent proxy maintains a shadow directory of the cache directory for the cache lines allocated to it. In response to receiving an operation request, a coherent proxy corresponding to the request is determined. The accelerator communicates with the determined coherent proxy for the request.

Claims14

Dependent claims

A device for sharing an accelerator among a plurality of processors through a plurality of coherent proxies, the device comprising:

a cache associated with the accelerator;
a local store for storing cache allocation information indicating the allocation of the cache lines in the cache to one of a plurality of coherent proxies;
and
a cache directory for the cache lines used by the accelerator, including the status of the cache lines and the identification information of the coherent proxies to which the cache lines are allocated, wherein each coherent proxy maintains a shadow directory of the cache directory for the cache lines allocated to it,
wherein the device is configured to, in response to receiving an operation request, determine a coherent proxy corresponding to the request, and communicate with the determined coherent proxy for the request.

2 more elements

A method for sharing an accelerator among a plurality of processors through a plurality of coherent proxies, the method comprising:

obtaining cache allocation information indicating the allocation of the cache lines in a cache associated with the accelerator to one of a plurality of coherent proxies;
in a cache directory for the cache lines used by the accelerator, providing the status of the cache lines and the identification information of the coherent proxies to which the cache lines are allocated, wherein each coherent proxy maintains a shadow directory of the cache directory for the cache lines allocated to it;
in response to receiving an operation request, determining a coherent proxy corresponding to the request;
and
communicating with the determined coherent proxy for the request.

2 more elements

A computer program product being tangibly stored on a non-transient machine-readable medium and comprising machine-executable instructions for sharing an accelerator among a plurality of processors through a plurality of coherent proxies, the instructions, when executed on a device, causing the device to:

obtain cache allocation information indicating the allocation of the cache lines in a cache associated with the accelerator to one of a plurality of coherent proxies;
in a cache directory for the cache lines used by the accelerator, include the status of the cache lines and the identification information of the coherent proxies to which the cache lines are allocated, wherein each coherent proxy maintains a shadow directory of the cache directory for the cache lines allocated to it;
in response to receiving an operation request, determine a coherent proxy corresponding to the request;
and
communicate with the determined coherent proxy for the request.

2 more elements

Dependencies are inferred from the claim text.

Accelerator sharing

Life of this patent

Accelerator sharing

Life of this patent

Abstract

Claims14