Invention Grant
- Patent Title: Direct IO access from a CPU's instruction stream
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Application No.: US14608252Application Date: 2015-01-29
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Publication No.: US09678818B2Publication Date: 2017-06-13
- Inventor: Shlomo Raikin , Noam Bloch , Richard Graham , Ofer Hayut , Michael Kagan , Liran Liss
- Applicant: Mellanox Technologies, Ltd.
- Applicant Address: IL Yokneam
- Assignee: MELLANOX TECHNOLOGIES, LTD.
- Current Assignee: MELLANOX TECHNOLOGIES, LTD.
- Current Assignee Address: IL Yokneam
- Agent Mark M. Friedman
- Main IPC: G06F11/00
- IPC: G06F11/00 ; G06F11/07 ; G06F9/30 ; G06F11/36 ; G06F11/22

Abstract:
A method for network access of remote memory directly from a local instruction stream using conventional loads and stores. In cases where network IO access (a network phase) cannot overlap a compute phase, a direct network access from the instruction stream greatly decreases latency in CPU processing. The network is treated as yet another memory that can be directly read from, or written to, by the CPU. Network access can be done directly from the instruction stream using regular loads and stores. Example scenarios where synchronous network access can be beneficial are SHMEM (symmetric hierarchical memory access) usages (where the program directly reads/writes remote memory), and scenarios where part of system memory (for example DDR) can reside over a network and made accessible by demand to different CPUs.
Public/Granted literature
- US20150212817A1 Direct IO access from a CPU's instruction stream Public/Granted day:2015-07-30
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