/** * @file: README * CVS: $Id$ * @author: Gabriel Marin * gmarin@eecs.utk.edu * @defgroup papi_components Components * @brief Component Specific Readme file: infiniband */ /** @page component_readme Component Readme @section Component Specific Information infiniband/ The PAPI infiniband component uses the sysfs interface to access infiniband performance counters from user space. On initialization, it checks for the existence of folder /sys/class/infiniband/ and it auto-detects all the active IB devices and associated ports. This component supports both the short IB counters, which are at most 32-bit, overflowing and auto resetting, thus, not very useful, and the IBoE extended counters, which are 64-bit and free running. If available, the latter counters are recommended for performance monitoring. */