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Top Forums Shell Programming and Scripting Building a better mouse trap, or How many lines of code does it take to trap a mouse? Post 302070688 by mph on Thursday 6th of April 2006 04:02:30 PM
Old 04-06-2006
Smilie I knew I shouldn't have gone to the picasso school of communication Smilie
 
Test Your Knowledge in Computers #229
Difficulty: Easy
According to NetMarketShare, in September 2019 Linux had a 2% global market share of the desktop / laptop computer market.
True or False?

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RDMA_CREATE_ID(3)					   Librdmacm Programmer's Manual					 RDMA_CREATE_ID(3)

NAME
rdma_create_id - Allocate a communication identifier. SYNOPSIS
#include <rdma/rdma_cma.h> int rdma_create_id (struct rdma_event_channel *channel, struct rdma_cm_id **id, void *context, enum rdma_port_space ps); ARGUMENTS
channel The communication channel that events associated with the allocated rdma_cm_id will be reported on. This may be NULL. id A reference where the allocated communication identifier will be returned. context User specified context associated with the rdma_cm_id. ps RDMA port space. DESCRIPTION
Creates an identifier that is used to track communication information. RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason. NOTES
Rdma_cm_id's are conceptually equivalent to a socket for RDMA communication. The difference is that RDMA communication requires explicitly binding to a specified RDMA device before communication can occur, and most operations are asynchronous in nature. Asynchronous communica- tion events on an rdma_cm_id are reported through the associated event channel. If the channel parameter is NULL, the rdma_cm_id will be placed into synchronous operation. While operating synchronously, calls that result in an event will block until the operation completes. The event will be returned to the user through the rdma_cm_id structure, and be available for access until another rdma_cm call is made. Users must release the rdma_cm_id by calling rdma_destroy_id. PORT SPACE
Details of the services provided by the different port spaces are outlined below. RDMA_PS_TCP Provides reliable, connection-oriented QP communication. Unlike TCP, the RDMA port space provides message, not stream, based commu- nication. RDMA_PS_UDP Provides unreliable, connectionless QP communication. Supports both datagram and multicast communication. SEE ALSO
rdma_cm(7), rdma_create_event_channel(3), rdma_destroy_id(3), rdma_get_devices(3), rdma_bind_addr(3), rdma_resolve_addr(3), rdma_con- nect(3), rdma_listen(3), rdma_set_option(3) librdmacm 2010-07-19 RDMA_CREATE_ID(3)

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