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// Copyright 2024 Joshua Bakita
#define _GNU_SOURCE
#include <error.h>
#include <errno.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "libsmctrl.h"
int main(int argc, char** argv) {
uint32_t num_gpcs = 0, num_tpcs = 0;
uint64_t* masks = NULL;
int res;
int gpu_id = 0;
// Optionally support specifying the GPU ID to query via an argument
// Important: This GPU ID must match the ID used by the nvdebug module. See
// the documentation on libsmctrl_get_gpc_info() for details.
if (argc > 2 || (argc == 2 && (!strcmp(argv[1], "--help") || !strcmp(argv[1], "-h")))) {
fprintf(stderr, "Usage: %s <nvdebug GPU ID>\n", argv[0]);
return 1;
}
if (argc > 1)
gpu_id = atoi(argv[1]);
if ((res = libsmctrl_get_gpc_info(&num_gpcs, &masks, gpu_id)) != 0)
error(1, res, "libsmctrl_get_gpc_info() failed");
printf("%s: GPU%d has %d enabled GPCs.\n", program_invocation_name, gpu_id, num_gpcs);
for (int i = 0; i < num_gpcs; i++) {
num_tpcs += __builtin_popcountl(masks[i]);
printf("%s: Mask of %d TPCs associated with GPC %d: %#018lx\n", program_invocation_name, __builtin_popcountl(masks[i]), i, masks[i]);
}
printf("%s: Total of %u enabled TPCs.\n", program_invocation_name, num_tpcs);
return 0;
}
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