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common : add support for cpu_get_num_physical_cores() on Windows (#8771)

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* Add support for cpu_get_num_phsical_cores() on Windows

* fix build bug on msys2-clang64 and ucrt64

* avoid adding new function

* add new macros to avoid windows+mingw64

* Add error checking to return default value
This commit is contained in:
Liu Jia 2024-08-16 14:23:12 +08:00 committed by GitHub
parent 2a24c8caa6
commit fb487bb567
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GPG Key ID: B5690EEEBB952194
1 changed files with 34 additions and 2 deletions
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36
common/common.cpp
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@ -110,8 +110,34 @@ int32_t cpu_get_num_physical_cores() {
if (result == 0) {
return num_physical_cores;
}
#elif defined(_WIN32)
//TODO: Implement
#elif defined(_WIN32) && (_WIN32_WINNT >= 0x0601) && !defined(__MINGW64__) // windows 7 and later
// TODO: windows + arm64 + mingw64
unsigned int n_threads_win = std::thread::hardware_concurrency();
unsigned int default_threads = n_threads_win > 0 ? (n_threads_win <= 4 ? n_threads_win : n_threads_win / 2) : 4;
DWORD buffer_size = 0;
if (!GetLogicalProcessorInformationEx(RelationProcessorCore, nullptr, &buffer_size)) {
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
return default_threads;
}
}
std::vector<char> buffer(buffer_size);
if (!GetLogicalProcessorInformationEx(RelationProcessorCore, reinterpret_cast<PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX>(buffer.data()), &buffer_size)) {
return default_threads;
}
int32_t num_physical_cores = 0;
PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX info = reinterpret_cast<PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX>(buffer.data());
while (buffer_size > 0) {
if (info->Relationship == RelationProcessorCore) {
num_physical_cores += info->Processor.GroupCount;
}
buffer_size -= info->Size;
info = reinterpret_cast<PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX>(reinterpret_cast<char*>(info) + info->Size);
}
return num_physical_cores > 0 ? num_physical_cores : default_threads;
#endif
unsigned int n_threads = std::thread::hardware_concurrency();
return n_threads > 0 ? (n_threads <= 4 ? n_threads : n_threads / 2) : 4;
@ -1727,7 +1753,13 @@ std::string gpt_params_get_system_info(const gpt_params & params) {
if (params.n_threads_batch != -1) {
os << " (n_threads_batch = " << params.n_threads_batch << ")";
}
#if defined(_WIN32) && (_WIN32_WINNT >= 0x0601) && !defined(__MINGW64__) // windows 7 and later
// TODO: windows + arm64 + mingw64
DWORD logicalProcessorCount = GetActiveProcessorCount(ALL_PROCESSOR_GROUPS);
os << " / " << logicalProcessorCount << " | " << llama_print_system_info();
#else
os << " / " << std::thread::hardware_concurrency() << " | " << llama_print_system_info();
#endif
return os.str();
}