1 2 #define EIGEN_INTERNAL_DEBUG_CACHE_QUERY 3 #include <iostream> 4 #include "../Eigen/Core" 5 6 using namespace Eigen; 7 using namespace std; 8 9 #define DUMP_CPUID(CODE) {\ 10 int abcd[4]; \ 11 abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0;\ 12 EIGEN_CPUID(abcd, CODE, 0); \ 13 std::cout << "The code " << CODE << " gives " \ 14 << (int*)(abcd[0]) << " " << (int*)(abcd[1]) << " " \ 15 << (int*)(abcd[2]) << " " << (int*)(abcd[3]) << " " << std::endl; \ 16 } 17 18 int main() 19 { 20 cout << "Eigen's L1 = " << internal::queryL1CacheSize() << endl; 21 cout << "Eigen's L2/L3 = " << internal::queryTopLevelCacheSize() << endl; 22 int l1, l2, l3; 23 internal::queryCacheSizes(l1, l2, l3); 24 cout << "Eigen's L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; 25 26 #ifdef EIGEN_CPUID 27 28 int abcd[4]; 29 int string[8]; 30 char* string_char = (char*)(string); 31 32 // vendor ID 33 EIGEN_CPUID(abcd,0x0,0); 34 string[0] = abcd[1]; 35 string[1] = abcd[3]; 36 string[2] = abcd[2]; 37 string[3] = 0; 38 cout << endl; 39 cout << "vendor id = " << string_char << endl; 40 cout << endl; 41 int max_funcs = abcd[0]; 42 43 internal::queryCacheSizes_intel_codes(l1, l2, l3); 44 cout << "Eigen's intel codes L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; 45 if(max_funcs>=4) 46 { 47 internal::queryCacheSizes_intel_direct(l1, l2, l3); 48 cout << "Eigen's intel direct L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; 49 } 50 internal::queryCacheSizes_amd(l1, l2, l3); 51 cout << "Eigen's amd L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; 52 cout << endl; 53 54 // dump Intel direct method 55 if(max_funcs>=4) 56 { 57 l1 = l2 = l3 = 0; 58 int cache_id = 0; 59 int cache_type = 0; 60 do { 61 abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0; 62 EIGEN_CPUID(abcd,0x4,cache_id); 63 cache_type = (abcd[0] & 0x0F) >> 0; 64 int cache_level = (abcd[0] & 0xE0) >> 5; // A[7:5] 65 int ways = (abcd[1] & 0xFFC00000) >> 22; // B[31:22] 66 int partitions = (abcd[1] & 0x003FF000) >> 12; // B[21:12] 67 int line_size = (abcd[1] & 0x00000FFF) >> 0; // B[11:0] 68 int sets = (abcd[2]); // C[31:0] 69 int cache_size = (ways+1) * (partitions+1) * (line_size+1) * (sets+1); 70 71 cout << "cache[" << cache_id << "].type = " << cache_type << "\n"; 72 cout << "cache[" << cache_id << "].level = " << cache_level << "\n"; 73 cout << "cache[" << cache_id << "].ways = " << ways << "\n"; 74 cout << "cache[" << cache_id << "].partitions = " << partitions << "\n"; 75 cout << "cache[" << cache_id << "].line_size = " << line_size << "\n"; 76 cout << "cache[" << cache_id << "].sets = " << sets << "\n"; 77 cout << "cache[" << cache_id << "].size = " << cache_size << "\n"; 78 79 cache_id++; 80 } while(cache_type>0 && cache_id<16); 81 } 82 83 // dump everything 84 std::cout << endl <<"Raw dump:" << endl; 85 for(int i=0; i<max_funcs; ++i) 86 DUMP_CPUID(i); 87 88 DUMP_CPUID(0x80000000); 89 DUMP_CPUID(0x80000001); 90 DUMP_CPUID(0x80000002); 91 DUMP_CPUID(0x80000003); 92 DUMP_CPUID(0x80000004); 93 DUMP_CPUID(0x80000005); 94 DUMP_CPUID(0x80000006); 95 DUMP_CPUID(0x80000007); 96 DUMP_CPUID(0x80000008); 97 #else 98 cout << "EIGEN_CPUID is not defined" << endl; 99 #endif 100 return 0; 101 } 102
