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Memory Management Support for Multi-Programmed Remote Direct Memory Access (RDMA) Systems

12 years 5 months ago
Memory Management Support for Multi-Programmed Remote Direct Memory Access (RDMA) Systems
Current operating systems offer basic support for network interface controllers (NICs) supporting remote direct memory access (RDMA). Such support typically consists of a device driver responsible for configuring communication channels between the device and userlevel processes but not involved in data transfer. Unlike standard NICs, RDMA-capable devices incorporate significant memory resources for address translation purposes. In a multi-programmed operating system (OS) environment, these memory resources must be efficiently shareable by multiple processes. For such sharing to occur in a fair manner, the OS and the device must cooperate to arbitrate access to NIC memory, similar to the way CPUs and OSes cooperate to arbitrate access to translation lookaside buffers (TLBs) or physical memory. A problem with this approach is that today’s RDMA NICs are not integrated into the functions provided by OS memory management systems. As a result, RDMA NIC hardware resources are often monopol...
Kostas Magoutis
Added 24 Jun 2010
Updated 24 Jun 2010
Type Conference
Year 2005
Where CLUSTER
Authors Kostas Magoutis
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