针对你遇到的问题 "fail to check cpu flags: avx2 not supported. require avx2 popcnt movbe",以下是一些详细的解答和建议: 1. 确认当前CPU是否支持avx2指令集 首先,你需要确认你的CPU是否支持avx2指令集。这可以通过在Linux系统上运行以下命令来检查: bash cat /proc/cpuinfo | grep avx2 如果输出中包含avx2...
Thank you for posting in Intel Communities. Indeed, you may check the supported Instruction Set Extensions under Advanced Technologies from Intel® Core™ i7-8700 Processor's specifications page. Let us know if you still have any other concerns or questions that we may be of help. We'll w...
如果不用编译器优化,这个时候,AVX2大概比普通的C/C++浮点运算代码快2倍左右,不像宣传的那样厉害嘛。
- "/usr/share/cmake-3.28/Modules/Internal/CheckSourceRuns.cmake:93 (try_run)" - "/usr/share/cmake-3.28/Modules/CheckCXXSourceRuns.cmake:52 (cmake_check_source_runs)" - "cmake/Modules/CheckAVX2Support.cmake:57 (check_cxx_source_runs)" - "CMakeLists.txt:252 (CheckAVX2Support)" ch...
size())); // convert to binary and check for errors simdutf::result r = simdutf::base64_to_binary( source.data(), source.size(), (char*)buffer.data()); if(r.error != simdutf::error_code::SUCCESS) { // We have that expected[i].empty(). std::cout << "output: error" <...
<cpu mode="custom" match="exact" check="none"> <model fallback="allow">qemu64</model> <topology sockets="1" dies="1" clusters="1" cores="4" threads="2"/> </cpu> 改成 <cpu mode="custom" match="exact" check="none">
<cpu mode="custom" match="exact" check="none"> <model fallback="allow">qemu64</model> <topology sockets="1" dies="1" clusters="1" cores="4" threads="2"/> </cpu> 改成 <cpu mode="custom" match="exact" check="none">
Indeed, you may check the supported Instruction Set Extensions under Advanced Technologies from Intel® Core™ i7-8700 Processor's specifications page. Let us know if you still have any other concerns or questions that we may be of help. We'll wait for your reply. Best regards, Jeanette ...
CHECK_CXX_COMPILER_FLAG("-mavx2" COMPILER_SUPPORTS_AVX2) if(COMPILER_SUPPORTS_AVX2) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx2") endif() ``` 这个例子使用`CheckCXXCompilerFlag`宏检查编译器是否支持AVX和AVX2指令集,并根据结果设置相应的标志。这样,你就可以确保在支持这些指令集的系统上启用...
Windows: You can check the CPU information with the following command in Command Prompt: wmic cpu get caption, deviceid, name, numberofcores, maxclockspeed, status The virtualized CPU doesn't support AVX/AVX2/FMA: (duckdb_book) frank@ZZHUBT:~$lscpuArchitecture: x86_64 ...