Invention Grant
US08990450B2 Managing a direct memory access (‘DMA’) injection first-in-first-out (‘FIFO’) messaging queue in a parallel computer
有权
在并行计算机中管理直接内存访问（'DMA'）注入先进先出（'FIFO'）消息队列
- Patent Title: Managing a direct memory access (‘DMA’) injection first-in-first-out (‘FIFO’) messaging queue in a parallel computer
- Patent Title (中): 在并行计算机中管理直接内存访问（'DMA'）注入先进先出（'FIFO'）消息队列
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Application No.: US13470890Application Date: 2012-05-14
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Publication No.: US08990450B2Publication Date: 2015-03-24
- Inventor: Michael A. Blocksome , Todd A. Inglett , Patrick J. McCarthy , Joseph D. Ratterman , Brian E. Smith
- Applicant: Michael A. Blocksome , Todd A. Inglett , Patrick J. McCarthy , Joseph D. Ratterman , Brian E. Smith
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Biggers Kennedy Lenart Spragins LL
- Main IPC: G06F13/28
- IPC: G06F13/28
Abstract:
Managing a direct memory access (‘DMA’) injection first-in-first-out (‘FIFO’) messaging queue in a parallel computer, including: inserting, by a messaging unit management module, a DMA message descriptor into the injection FIFO messaging queue; determining, by the messaging unit management module, the number of extra slots in an immediate messaging queue required to store DMA message data associated with the DMA message descriptor; and responsive to determining that the number of extra slots in the immediate message queue required to store the DMA message data is greater than one, inserting, by the messaging unit management module, a number of DMA dummy message descriptors into the injection FIFO messaging queue, wherein the number of DMA dummy message descriptors is at least as many as the number of extra slots in the immediate messaging queue that are required to store the DMA message data.
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