beostat_get_cpu_count¶
Name¶
beostat_get_cpu_count – return the number of CPUs on the specified node
Synopsis¶
#include <sys/beostat.h>
int beostat_get_cpu_count (int node, size_t *ncpus);
Arguments¶
nodeThe node to query.
ncpusA pointer to a
size_t, which upon successful completion will contain the number of CPUs on the node specified by thenodeparameter.
Description¶
beostat_get_cpu_count executes on the master node and returns the
number of CPUs on a specified compute node. A CPU count of zero means
that the node’s sendstats daemon is not executing.
Return Value¶
Return 0 on success. If an error occurs, it will return -1.
Errors¶
This function relies on the Beostat subsystem, which consists of the
proc filesystem on the remote node, the sendstats daemon on the
remote node, the recvstats daemon on the master node, and two shared
memory files in the directory /var/shm. If any part of the system
breaks down, this function could fail.