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Diffstat (limited to 'xmrstak/backend/cpu/autoAdjust.hpp')
| -rw-r--r-- | xmrstak/backend/cpu/autoAdjust.hpp | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/xmrstak/backend/cpu/autoAdjust.hpp b/xmrstak/backend/cpu/autoAdjust.hpp new file mode 100644 index 0000000..32c8576 --- /dev/null +++ b/xmrstak/backend/cpu/autoAdjust.hpp @@ -0,0 +1,172 @@ +#pragma once +#include "jconf.h" +#include "../../console.h" +#include "../../jconf.h" +#include "../../ConfigEditor.hpp" +#include "../../Params.hpp" +#include <string> + +#ifdef _WIN32 +#include <windows.h> +#else +#include <unistd.h> +#endif // _WIN32 + + +namespace xmrstak +{ +namespace cpu +{ +// Mask bits between h and l and return the value +// This enables us to put in values exactly like in the manual +// For example EBX[31:22] is get_masked(cpu_info[1], 31, 22) +inline int32_t get_masked(int32_t val, int32_t h, int32_t l) +{ + val &= (0x7FFFFFFF >> (31-(h-l))) << l; + return val >> l; +} + +class autoAdjust +{ +public: + + autoAdjust() + { + } + + bool printConfig() + { + + ConfigEditor configTpl{}; + + // load the template of the backend config into a char variable + const char *tpl = + #include "./config.tpl" + ; + configTpl.set( std::string(tpl) ); + + std::string conf; + + if(!detectL3Size() || L3KB_size < 1024 || L3KB_size > 102400) + { + if(L3KB_size < 1024 || L3KB_size > 102400) + printer::inst()->print_msg(L0, "Autoconf failed: L3 size sanity check failed - %u KB.", L3KB_size); + + conf += std::string(" { \"low_power_mode\" : false, \"no_prefetch\" : true, \"affine_to_cpu\" : false },\n"); + printer::inst()->print_msg(L0, "Autoconf FAILED. Create config for a single thread. Please try to add new ones until the hashrate slows down."); + } + else + { + printer::inst()->print_msg(L0, "Autoconf L3 size detected at %u KB.", L3KB_size); + + detectCPUConf(); + + printer::inst()->print_msg(L0, "Autoconf core count detected as %u on %s.", corecnt, + linux_layout ? "Linux" : "Windows"); + + uint32_t aff_id = 0; + for(uint32_t i=0; i < corecnt; i++) + { + bool double_mode; + + if(L3KB_size <= 0) + break; + + double_mode = L3KB_size / 2048 > (int32_t)(corecnt-i); + + conf += std::string(" { \"low_power_mode\" : "); + conf += std::string(double_mode ? "true" : "false"); + conf += std::string(", \"no_prefetch\" : true, \"affine_to_cpu\" : "); + conf += std::to_string(aff_id); + conf += std::string(" },\n"); + + if(!linux_layout || old_amd) + { + aff_id += 2; + + if(aff_id >= corecnt) + aff_id = 1; + } + else + aff_id++; + + if(double_mode) + L3KB_size -= 4096; + else + L3KB_size -= 2048; + } + } + + configTpl.replace("CPUCONFIG",conf); + configTpl.write(Params::inst().configFileCPU); + printer::inst()->print_msg(L0, "CPU configuration stored in file '%s'", Params::inst().configFileCPU.c_str()); + + return true; + } + +private: + bool detectL3Size() + { + int32_t cpu_info[4]; + char cpustr[13] = {0}; + + ::jconf::cpuid(0, 0, cpu_info); + memcpy(cpustr, &cpu_info[1], 4); + memcpy(cpustr+4, &cpu_info[3], 4); + memcpy(cpustr+8, &cpu_info[2], 4); + + if(strcmp(cpustr, "GenuineIntel") == 0) + { + ::jconf::cpuid(4, 3, cpu_info); + + if(get_masked(cpu_info[0], 7, 5) != 3) + { + printer::inst()->print_msg(L0, "Autoconf failed: Couln't find L3 cache page."); + return false; + } + + L3KB_size = ((get_masked(cpu_info[1], 31, 22) + 1) * (get_masked(cpu_info[1], 21, 12) + 1) * + (get_masked(cpu_info[1], 11, 0) + 1) * (cpu_info[2] + 1)) / 1024; + + return true; + } + else if(strcmp(cpustr, "AuthenticAMD") == 0) + { + ::jconf::cpuid(0x80000006, 0, cpu_info); + + L3KB_size = get_masked(cpu_info[3], 31, 18) * 512; + + ::jconf::cpuid(1, 0, cpu_info); + if(get_masked(cpu_info[0], 11, 8) < 0x17) //0x17h is Zen + old_amd = true; + + return true; + } + else + { + printer::inst()->print_msg(L0, "Autoconf failed: Unknown CPU type: %s.", cpustr); + return false; + } + } + + void detectCPUConf() + { +#ifdef _WIN32 + SYSTEM_INFO info; + GetSystemInfo(&info); + corecnt = info.dwNumberOfProcessors; + linux_layout = false; +#else + corecnt = sysconf(_SC_NPROCESSORS_ONLN); + linux_layout = true; +#endif // _WIN32 + } + + int32_t L3KB_size = 0; + uint32_t corecnt; + bool old_amd = false; + bool linux_layout; +}; + +} // namespace cpu +} // namepsace xmrstak |
