[136] | 1 |
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| 2 | #define EIGEN_INTERNAL_DEBUG_CACHE_QUERY
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| 3 | #include <iostream>
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| 4 | #include "../Eigen/Core"
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| 5 |
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| 6 | using namespace Eigen;
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| 7 | using namespace std;
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| 8 |
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| 9 | #define DUMP_CPUID(CODE) {\
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| 10 | int abcd[4]; \
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| 11 | abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0;\
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| 12 | EIGEN_CPUID(abcd, CODE, 0); \
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| 13 | std::cout << "The code " << CODE << " gives " \
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| 14 | << (int*)(abcd[0]) << " " << (int*)(abcd[1]) << " " \
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| 15 | << (int*)(abcd[2]) << " " << (int*)(abcd[3]) << " " << std::endl; \
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| 16 | }
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| 17 |
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| 18 | int main()
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| 19 | {
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| 20 | cout << "Eigen's L1 = " << internal::queryL1CacheSize() << endl;
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| 21 | cout << "Eigen's L2/L3 = " << internal::queryTopLevelCacheSize() << endl;
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| 22 | int l1, l2, l3;
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| 23 | internal::queryCacheSizes(l1, l2, l3);
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| 24 | cout << "Eigen's L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
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| 25 |
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| 26 | #ifdef EIGEN_CPUID
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| 27 |
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| 28 | int abcd[4];
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| 29 | int string[8];
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| 30 | char* string_char = (char*)(string);
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| 31 |
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| 32 | // vendor ID
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| 33 | EIGEN_CPUID(abcd,0x0,0);
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| 34 | string[0] = abcd[1];
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| 35 | string[1] = abcd[3];
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| 36 | string[2] = abcd[2];
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| 37 | string[3] = 0;
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| 38 | cout << endl;
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| 39 | cout << "vendor id = " << string_char << endl;
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| 40 | cout << endl;
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| 41 | int max_funcs = abcd[0];
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| 42 |
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| 43 | internal::queryCacheSizes_intel_codes(l1, l2, l3);
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| 44 | cout << "Eigen's intel codes L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
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| 45 | if(max_funcs>=4)
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| 46 | {
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| 47 | internal::queryCacheSizes_intel_direct(l1, l2, l3);
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| 48 | cout << "Eigen's intel direct L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
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| 49 | }
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| 50 | internal::queryCacheSizes_amd(l1, l2, l3);
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| 51 | cout << "Eigen's amd L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl;
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| 52 | cout << endl;
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| 53 |
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| 54 | // dump Intel direct method
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| 55 | if(max_funcs>=4)
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| 56 | {
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| 57 | l1 = l2 = l3 = 0;
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| 58 | int cache_id = 0;
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| 59 | int cache_type = 0;
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| 60 | do {
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| 61 | abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0;
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| 62 | EIGEN_CPUID(abcd,0x4,cache_id);
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| 63 | cache_type = (abcd[0] & 0x0F) >> 0;
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| 64 | int cache_level = (abcd[0] & 0xE0) >> 5; // A[7:5]
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| 65 | int ways = (abcd[1] & 0xFFC00000) >> 22; // B[31:22]
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| 66 | int partitions = (abcd[1] & 0x003FF000) >> 12; // B[21:12]
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| 67 | int line_size = (abcd[1] & 0x00000FFF) >> 0; // B[11:0]
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| 68 | int sets = (abcd[2]); // C[31:0]
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| 69 | int cache_size = (ways+1) * (partitions+1) * (line_size+1) * (sets+1);
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| 70 |
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| 71 | cout << "cache[" << cache_id << "].type = " << cache_type << "\n";
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| 72 | cout << "cache[" << cache_id << "].level = " << cache_level << "\n";
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| 73 | cout << "cache[" << cache_id << "].ways = " << ways << "\n";
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| 74 | cout << "cache[" << cache_id << "].partitions = " << partitions << "\n";
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| 75 | cout << "cache[" << cache_id << "].line_size = " << line_size << "\n";
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| 76 | cout << "cache[" << cache_id << "].sets = " << sets << "\n";
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| 77 | cout << "cache[" << cache_id << "].size = " << cache_size << "\n";
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| 78 |
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| 79 | cache_id++;
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| 80 | } while(cache_type>0 && cache_id<16);
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| 81 | }
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| 82 |
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| 83 | // dump everything
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| 84 | std::cout << endl <<"Raw dump:" << endl;
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| 85 | for(int i=0; i<max_funcs; ++i)
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| 86 | DUMP_CPUID(i);
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| 87 |
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| 88 | DUMP_CPUID(0x80000000);
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| 89 | DUMP_CPUID(0x80000001);
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| 90 | DUMP_CPUID(0x80000002);
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| 91 | DUMP_CPUID(0x80000003);
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| 92 | DUMP_CPUID(0x80000004);
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| 93 | DUMP_CPUID(0x80000005);
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| 94 | DUMP_CPUID(0x80000006);
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| 95 | DUMP_CPUID(0x80000007);
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| 96 | DUMP_CPUID(0x80000008);
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| 97 | #else
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| 98 | cout << "EIGEN_CPUID is not defined" << endl;
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| 99 | #endif
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| 100 | return 0;
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| 101 | }
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