214 lines
No EOL
6.8 KiB
C
214 lines
No EOL
6.8 KiB
C
#ifndef __APPLE__ // TODO - maybe consider nvidia support on intel macs?
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#include "gpu_info_cuda.h"
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#include <string.h>
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void cuda_init(char *cuda_lib_path, cuda_init_resp_t *resp) {
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nvmlReturn_t ret;
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resp->err = NULL;
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const int buflen = 256;
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char buf[buflen + 1];
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int i;
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struct lookup {
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char *s;
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void **p;
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} l[] = {
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{"nvmlInit_v2", (void *)&resp->ch.nvmlInit_v2},
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{"nvmlShutdown", (void *)&resp->ch.nvmlShutdown},
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{"nvmlDeviceGetHandleByIndex", (void *)&resp->ch.nvmlDeviceGetHandleByIndex},
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{"nvmlDeviceGetMemoryInfo", (void *)&resp->ch.nvmlDeviceGetMemoryInfo},
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{"nvmlDeviceGetCount_v2", (void *)&resp->ch.nvmlDeviceGetCount_v2},
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{"nvmlDeviceGetCudaComputeCapability", (void *)&resp->ch.nvmlDeviceGetCudaComputeCapability},
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{"nvmlSystemGetDriverVersion", (void *)&resp->ch.nvmlSystemGetDriverVersion},
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{"nvmlDeviceGetName", (void *)&resp->ch.nvmlDeviceGetName},
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{"nvmlDeviceGetSerial", (void *)&resp->ch.nvmlDeviceGetSerial},
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{"nvmlDeviceGetVbiosVersion", (void *)&resp->ch.nvmlDeviceGetVbiosVersion},
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{"nvmlDeviceGetBoardPartNumber", (void *)&resp->ch.nvmlDeviceGetBoardPartNumber},
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{"nvmlDeviceGetBrand", (void *)&resp->ch.nvmlDeviceGetBrand},
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{NULL, NULL},
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};
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resp->ch.handle = LOAD_LIBRARY(cuda_lib_path, RTLD_LAZY);
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if (!resp->ch.handle) {
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char *msg = LOAD_ERR();
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LOG(resp->ch.verbose, "library %s load err: %s\n", cuda_lib_path, msg);
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snprintf(buf, buflen,
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"Unable to load %s library to query for Nvidia GPUs: %s",
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cuda_lib_path, msg);
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free(msg);
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resp->err = strdup(buf);
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return;
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}
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// TODO once we've squashed the remaining corner cases remove this log
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LOG(resp->ch.verbose, "wiring nvidia management library functions in %s\n", cuda_lib_path);
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for (i = 0; l[i].s != NULL; i++) {
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// TODO once we've squashed the remaining corner cases remove this log
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LOG(resp->ch.verbose, "dlsym: %s\n", l[i].s);
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*l[i].p = LOAD_SYMBOL(resp->ch.handle, l[i].s);
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if (!l[i].p) {
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resp->ch.handle = NULL;
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char *msg = LOAD_ERR();
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LOG(resp->ch.verbose, "dlerr: %s\n", msg);
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UNLOAD_LIBRARY(resp->ch.handle);
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snprintf(buf, buflen, "symbol lookup for %s failed: %s", l[i].s,
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msg);
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free(msg);
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resp->err = strdup(buf);
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return;
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}
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}
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ret = (*resp->ch.nvmlInit_v2)();
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if (ret != NVML_SUCCESS) {
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LOG(resp->ch.verbose, "nvmlInit_v2 err: %d\n", ret);
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UNLOAD_LIBRARY(resp->ch.handle);
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resp->ch.handle = NULL;
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snprintf(buf, buflen, "nvml vram init failure: %d", ret);
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resp->err = strdup(buf);
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return;
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}
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// Report driver version if we're in verbose mode, ignore errors
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ret = (*resp->ch.nvmlSystemGetDriverVersion)(buf, buflen);
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if (ret != NVML_SUCCESS) {
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LOG(resp->ch.verbose, "nvmlSystemGetDriverVersion failed: %d\n", ret);
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} else {
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LOG(resp->ch.verbose, "CUDA driver version: %s\n", buf);
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}
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}
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void cuda_check_vram(cuda_handle_t h, mem_info_t *resp) {
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resp->err = NULL;
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nvmlDevice_t device;
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nvmlMemory_t memInfo = {0};
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nvmlReturn_t ret;
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const int buflen = 256;
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char buf[buflen + 1];
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int i;
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if (h.handle == NULL) {
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resp->err = strdup("nvml handle sn't initialized");
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return;
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}
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ret = (*h.nvmlDeviceGetCount_v2)(&resp->count);
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if (ret != NVML_SUCCESS) {
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snprintf(buf, buflen, "unable to get device count: %d", ret);
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resp->err = strdup(buf);
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return;
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}
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resp->total = 0;
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resp->free = 0;
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for (i = 0; i < resp->count; i++) {
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ret = (*h.nvmlDeviceGetHandleByIndex)(i, &device);
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if (ret != NVML_SUCCESS) {
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snprintf(buf, buflen, "unable to get device handle %d: %d", i, ret);
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resp->err = strdup(buf);
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return;
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}
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ret = (*h.nvmlDeviceGetMemoryInfo)(device, &memInfo);
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if (ret != NVML_SUCCESS) {
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snprintf(buf, buflen, "device memory info lookup failure %d: %d", i, ret);
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resp->err = strdup(buf);
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return;
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}
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if (h.verbose) {
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nvmlBrandType_t brand = 0;
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// When in verbose mode, report more information about
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// the card we discover, but don't fail on error
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ret = (*h.nvmlDeviceGetName)(device, buf, buflen);
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if (ret != NVML_SUCCESS) {
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LOG(h.verbose, "nvmlDeviceGetName failed: %d\n", ret);
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} else {
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LOG(h.verbose, "[%d] CUDA device name: %s\n", i, buf);
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}
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ret = (*h.nvmlDeviceGetBoardPartNumber)(device, buf, buflen);
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if (ret != NVML_SUCCESS) {
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LOG(h.verbose, "nvmlDeviceGetBoardPartNumber failed: %d\n", ret);
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} else {
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LOG(h.verbose, "[%d] CUDA part number: %s\n", i, buf);
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}
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ret = (*h.nvmlDeviceGetSerial)(device, buf, buflen);
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if (ret != NVML_SUCCESS) {
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LOG(h.verbose, "nvmlDeviceGetSerial failed: %d\n", ret);
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} else {
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LOG(h.verbose, "[%d] CUDA S/N: %s\n", i, buf);
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}
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ret = (*h.nvmlDeviceGetVbiosVersion)(device, buf, buflen);
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if (ret != NVML_SUCCESS) {
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LOG(h.verbose, "nvmlDeviceGetVbiosVersion failed: %d\n", ret);
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} else {
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LOG(h.verbose, "[%d] CUDA vbios version: %s\n", i, buf);
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}
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ret = (*h.nvmlDeviceGetBrand)(device, &brand);
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if (ret != NVML_SUCCESS) {
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LOG(h.verbose, "nvmlDeviceGetBrand failed: %d\n", ret);
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} else {
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LOG(h.verbose, "[%d] CUDA brand: %d\n", i, brand);
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}
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}
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LOG(h.verbose, "[%d] CUDA totalMem %llu\n", i, memInfo.total);
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LOG(h.verbose, "[%d] CUDA usedMem %llu\n", i, memInfo.used);
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resp->total += memInfo.total;
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resp->free += memInfo.free;
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}
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}
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void cuda_compute_capability(cuda_handle_t h, cuda_compute_capability_t *resp) {
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resp->err = NULL;
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resp->major = 0;
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resp->minor = 0;
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nvmlDevice_t device;
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int major = 0;
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int minor = 0;
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nvmlReturn_t ret;
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const int buflen = 256;
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char buf[buflen + 1];
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int i;
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if (h.handle == NULL) {
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resp->err = strdup("nvml handle not initialized");
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return;
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}
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unsigned int devices;
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ret = (*h.nvmlDeviceGetCount_v2)(&devices);
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if (ret != NVML_SUCCESS) {
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snprintf(buf, buflen, "unable to get device count: %d", ret);
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resp->err = strdup(buf);
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return;
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}
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for (i = 0; i < devices; i++) {
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ret = (*h.nvmlDeviceGetHandleByIndex)(i, &device);
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if (ret != NVML_SUCCESS) {
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snprintf(buf, buflen, "unable to get device handle %d: %d", i, ret);
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resp->err = strdup(buf);
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return;
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}
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ret = (*h.nvmlDeviceGetCudaComputeCapability)(device, &major, &minor);
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if (ret != NVML_SUCCESS) {
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snprintf(buf, buflen, "device compute capability lookup failure %d: %d", i, ret);
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resp->err = strdup(buf);
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return;
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}
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// Report the lowest major.minor we detect as that limits our compatibility
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if (resp->major == 0 || resp->major > major ) {
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resp->major = major;
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resp->minor = minor;
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} else if ( resp->major == major && resp->minor > minor ) {
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resp->minor = minor;
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}
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}
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}
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#endif // __APPLE__
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