Capturing snapshots of offload applications on many-core coprocessors
Methods are provided. A method for swapping-out an offload process from a coprocessor includes issuing a snapify_pause request from a host processor to the coprocessor to initiate a pausing of the offload process executing by the coprocessor and another process executing by the host processor using a plurality of locks. The offload process is previously offloaded from the host processor to the coprocessor. The method further includes issuing a snapify_capture request from the host processor to the coprocessor to initiate a local snapshot capture and saving of the local snapshot capture by the coprocessor. The method also includes issuing a snapify_wait request from the host processor to the coprocessor to wait for the local snapshot capture and the saving of the local snapshot capture to complete by the coprocessor.
1. A method for swapping-out an offload process from a coprocessor, comprising:
issuing a snapify_pause request from a host processor to the coprocessor to initiate a pausing of the offload process executing by the coprocessor and another process executing by the host processor using a plurality of locks, the offload process being previously offloaded from the host processor to the coprocessor;
issuing a snapify_capture request from the host processor to the coprocessor to initiate a local snapshot capture and saving of the local snapshot capture by the coprocessor; and
issuing a snapify_wait request from the host processor to the coprocessor to wait for the local snapshot capture and the saving of the local snapshot capture to complete by the coprocessor.
2. The method of claim 1 , wherein the offload process is terminated by the coprocessor responsive to the local snapshot capture and the saving of the local snapshot capture being completed by the coprocessor.
3. The method of claim 1 , wherein a request, for terminating the offload process by the coprocessor responsive to the local snapshot capture and the saving of the local snapshot capture being completed by the coprocessor, is placed within the snapify_capture request.
4. The method of claim 3 , wherein the request is made using a Boolean flag.
5. The method of claim 1 , further comprising receiving a path to a location for storing the local snapshot capture in a call for the method.
6. The method of claim 1 , wherein the method is initiated responsive to a job scheduler.
7. A non-transitory article of manufacture tangibly embodying a computer readable program which when executed causes a computer to perform the steps of claim 1 .