drmaa2_msession_get_all_machines - drmaa2_msession_get_all_machines, Returns all Univa(R) Grid Engine(TM) hosts
#include "drmaa2.h"
drmaa2_machineinfo_list drmaa2_msession_get_all_machines(const drmaa2_msession monitoring_session, const drmaa2_string_list filter);
Returns a list of all execution hosts currently managed by Univa(R) Grid Engine(TM) in a drmaa2_machineinfo_list.
The second argument defines a filter for the hosts to be returned. Only hosts with names given by the filter are returned if filter is != NULL. If filter is NULL all available hosts are returned.
The drmaa2_machineinfo_list consists of drmaa2_machineinfo elements which are pointers to the drmaa2_machineinfo_s struct. The struct offers at least following elements:
typedef struct {
drmaa2_string name;
drmaa2_bool available;
long long sockets;
long long coresPerSocket;
long long threadsPerCore;
float load;
long long physMemory;
long long virtMemory;
drmaa2_cpu machineArch;
drmaa2_version machineOSVersion;
drmaa2_os machineOS;
} drmaa2_machineinfo_s;
typedef drmaa2_machineinfo_s *drmaa2_machineinfo;
All values, but especially allocated values like drmaa2_string name and drmaa2_version, which can be NULL needs to be tested if they are not UNSET or != NULL before they are used. The UNSET defines can be found in the drmaa2.h file.
The availability of additional values can be queried with the drmaa2_machineinfo_impl_spec(3) function.
Returns a newly allocated list of hosts in a drmaa2_machineinfo_list structure or NULL in case of an error. The machine list was initialized with an appropriate callback function so that drmaa2_list_free(&result) frees the complete list with all drmaa2_machineinfo objects inside. In case of an error the error number and error message can be fetched with drmaa2_lasterror(3) and drmaa2_lasterror_text().
drmaa2_msession monitoring_session = drmaa2_open_msession(NULL);
if (ms != NULL) {
drmaa2_machineinfo_list mi_list = drmaa2_msession_get_all_machines(monitoring_session, NULL);
if (mi_list == NULL) {
/* handle error */
drmaa2_string error = drmaa2_lasterror_text();
fprintf(stderr, "Error during fetching the machineinfo list from the monitoring session: %s\n", error);
drmaa2_string_free(&error);
} else {
int i;
size_t size = drmaa2_list_size(mi_list);
fprintf(stdout, "There are %lld machines in the system:\n", size);
for (i = 0; i < size; i++) {
drmaa2_machineinfo mi = (drmaa2_machineinfo) drmaa2_list_get(mi_list, i);
fprintf(stdout, "machine name: %s\n", (mi->name==DRMAA2_UNSET_STRING)?"UNSET":mi->name);
fprintf(stdout, "amount of sockets: %lld\n", mi->sockets);
fprintf(stdout, "amount of cores per socket: %lld\n", mi->coresPerSocket);
fprintf(stdout, "amount of threads per core: %lld\n", mi->threadsPerCore);
fprintf(stdout, "1 min. avg. load on machine: %f\n", mi->load);
fprintf(stdout, "physical memory in kilobyte: %lld\n", mi->physMemory);
fprintf(stdout, "virtual memory in kilobyte: %lld\n", mi->virtMemory);
fprintf(stdout, "OS: %s\n", drmaa2_os_to_string(mi->machineOS));
fprintf(stdout, "CPU architecture as enum: %d\n", mi->machineArch);
}
drmaa2_list_free(&mi_list);
}
...
drmaa2_close_msession(monitoring_session);
drmaa2_msession_free(&monitoring_session);
}
...
Example for the convertion from a drmaa2_os object into a string:
static char* drmaa2_os_to_string(const drmaa2_os os)
{
switch (os) {
case DRMAA2_OTHER_OS:
return "DRMAA2_OTHER_OS";
case DRMAA2_AIX:
return "DRMAA2_AIX";
case DRMAA2_BSD:
return "DRMAA2_BSD";
case DRMAA2_LINUX:
return "DRMAA2_LINUX";
case DRMAA2_HPUX:
return "DRMAA2_HPUX";
case DRMAA2_IRIX:
return "DRMAA2_IRIX";
case DRMAA2_MACOS:
return "DRMAA2_MACOS";
case DRMAA2_SUNOS:
return "DRMAA2_SUNOS";
case DRMAA2_TRU64:
return "DRMAA2_TRU64";
case DRMAA2_UNIXWARE:
return "DRMAA2_UNIXWARE";
case DRMAA2_WIN:
return "DRMAA2_WIN";
case DRMAA2_WINNT:
return "DRMAA2_WINNT";
default:
return "UNKNOWN";
}
return "UNKNOWN";
}
drmaa2_open_msession(3), drmaa2_close_msession(3), drmaa2_msession_free(3), drmaa2_msession_get_all_jobs(3), drmaa2_msession_get_all_queues(3), drmaa2_list_free(3), drmaa2_machineinfo_impl_spec(3) )
Copyright Univa Corporation 2013