fzorb/REDACTED-rig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

AVX2 optimized code for AstroBWT

Browse source 
Added "astrobwt-avx2" parameter in config.json, it's turned off ("false") by default.

4-5% speedup on CPUs with proper AVX2 support (AMD Ryzen starting with Zen2, Intel Core starting with Haswell).

There will be no speedup on the following CPUs:

- Intel Pentium/Celeron don't support AVX2
- AMD Zen/Zen+ have only half-speed AVX

GCC compiled version is faster without AVX2, MSVC compiled version is faster with AVX2
This commit is contained in:
SChernykh 2020-03-10 22:03:16 +01:00
parent 8698b73036
commit e22f798085
14 changed files with 563 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/backend/cpu/CpuConfig.cpp
View file

@ -52,6 +52,7 @@ static const char *kArgon2Impl = "argon2-impl";
#ifdef XMRIG_ALGO_ASTROBWT
static const char* kAstroBWTMaxSize = "astrobwt-max-size";
static const char* kAstroBWTAVX2 = "astrobwt-avx2";
#endif
@ -94,6 +95,7 @@ rapidjson::Value xmrig::CpuConfig::toJSON(rapidjson::Document &doc) const
# ifdef XMRIG_ALGO_ASTROBWT
obj.AddMember(StringRef(kAstroBWTMaxSize), m_astrobwtMaxSize, allocator);
obj.AddMember(StringRef(kAstroBWTAVX2), m_astrobwtAVX2, allocator);
# endif
m_threads.toJSON(obj, doc);
@ -148,12 +150,20 @@ void xmrig::CpuConfig::read(const rapidjson::Value &value)
# endif
# ifdef XMRIG_ALGO_ASTROBWT
const auto& obj = Json::getValue(value, kAstroBWTMaxSize);
if (obj.IsNull() || !obj.IsInt()) {
const auto& astroBWTMaxSize = Json::getValue(value, kAstroBWTMaxSize);
if (astroBWTMaxSize.IsNull() || !astroBWTMaxSize.IsInt()) {
m_shouldSave = true;
}
else {
m_astrobwtMaxSize = std::min(std::max(obj.GetInt(), 400), 1200);
m_astrobwtMaxSize = std::min(std::max(astroBWTMaxSize.GetInt(), 400), 1200);
}
const auto& astroBWTAVX2 = Json::getValue(value, kAstroBWTAVX2);
if (astroBWTAVX2.IsNull() || !astroBWTAVX2.IsBool()) {
m_shouldSave = true;
}
else {
m_astrobwtAVX2 = astroBWTAVX2.GetBool();
}
# endif