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ggml-backend : add device description to CPU backend (#9720)

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Diego Devesa 2024-10-03 17:39:18 +02:00 committed by GitHub
parent d6fe7abf04
commit a7ad553513
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1 changed files with 83 additions and 5 deletions
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88
ggml/src/ggml-backend.cpp
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@ -1,5 +1,13 @@
// Note: porting this file to C++ is a work in progress
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#ifndef NOMINMAX
# define NOMINMAX
#endif
#include <windows.h>
#endif
#include "ggml-backend-impl.h"
#include "ggml-alloc.h"
#include "ggml-impl.h"
@ -10,9 +18,15 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <vector>
#ifdef __APPLE__
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
// backend buffer type
const char * ggml_backend_buft_name(ggml_backend_buffer_type_t buft) {
@ -1008,6 +1022,70 @@ ggml_backend_buffer_t ggml_backend_cpu_buffer_from_ptr(void * ptr, size_t size)
////////////////////////
struct ggml_backend_cpu_device_context {
std::string description = "CPU";
ggml_backend_cpu_device_context() {
#ifdef __APPLE__
size_t len = 0;
if (!sysctlbyname("machdep.cpu.brand_string", NULL, &len, NULL, 0)) {
description.resize(len);
sysctlbyname("machdep.cpu.brand_string", &description[0], &len, NULL, 0); // NOLINT
}
#elif defined(__linux__)
FILE * f = fopen("/proc/cpuinfo", "r");
if (f) {
char buf[1024];
while (fgets(buf, sizeof(buf), f)) {
if (strncmp(buf, "model name", 10) == 0) {
char * p = strchr(buf, ':');
if (p) {
p++;
while (std::isspace(*p)) {
p++;
}
while (std::isspace(p[strlen(p) - 1])) {
p[strlen(p) - 1] = '\0';
}
description = p;
break;
}
}
}
fclose(f);
}
#elif defined(_WIN32)
HKEY hKey;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,
TEXT("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0"),
0,
KEY_READ,
&hKey) == ERROR_SUCCESS) {
DWORD cpu_brand_size = 0;
if (RegQueryValueExA(hKey,
TEXT("ProcessorNameString"),
NULL,
NULL,
NULL,
&cpu_brand_size) == ERROR_SUCCESS) {
description.resize(cpu_brand_size);
if (RegQueryValueExA(hKey,
TEXT("ProcessorNameString"),
NULL,
NULL,
(LPBYTE)&description[0], // NOLINT
&cpu_brand_size) == ERROR_SUCCESS) {
if (description.find('\0') != std::string::npos) {
description.resize(description.find('\0'));
}
}
}
RegCloseKey(hKey);
}
#endif
}
};
static const char * ggml_backend_cpu_device_get_name(ggml_backend_dev_t dev) {
return "CPU";
@ -1015,10 +1093,9 @@ static const char * ggml_backend_cpu_device_get_name(ggml_backend_dev_t dev) {
}
static const char * ggml_backend_cpu_device_get_description(ggml_backend_dev_t dev) {
// TODO
return "CPU";
struct ggml_backend_cpu_device_context * ctx = (struct ggml_backend_cpu_device_context *)dev->context;
GGML_UNUSED(dev);
return ctx->description.c_str();
}
static void ggml_backend_cpu_device_get_memory(ggml_backend_dev_t dev, size_t * free, size_t * total) {
@ -1131,10 +1208,11 @@ static size_t ggml_backend_cpu_reg_get_device_count(ggml_backend_reg_t reg) {
static ggml_backend_dev_t ggml_backend_cpu_reg_get_device(ggml_backend_reg_t reg, size_t index) {
GGML_ASSERT(index == 0);
static ggml_backend_cpu_device_context ctx;
static ggml_backend_device ggml_backend_cpu_device = {
/* .iface = */ ggml_backend_cpu_device_i,
/* .reg = */ reg,
/* .context = */ NULL,
/* .context = */ &ctx,
};
return &ggml_backend_cpu_device;