Optimized data communications in a parallel computer
A parallel computer includes nodes that include a network adapter that couples the node in a point-to-point network and supports communications in opposite directions of each dimension. Optimized communications include: receiving, by a network adapter of a receiving compute node, a packet--from a source direction--that specifies a destination node and deposit hints. Each hint is associated with a direction within which the packet is to be deposited. If a hint indicates the packet to be deposited in the opposite direction: the adapter delivers the packet to an application on the receiving node; forwards the packet to a next node in the opposite direction if the receiving node is not the destination; and forwards the packet to a node in a direction of a subsequent dimension if the hints indicate that the packet is to be deposited in the direction of the subsequent dimension.
- Research Organization:
- International Business Machines Corporation, Armonk, NY (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- International Business Machines Corporation (Armonk, NY)
- Patent Number(s):
- 8,812,610
- Application Number:
- 13/325,440
- OSTI ID:
- 1150218
- Country of Publication:
- United States
- Language:
- English
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