diff options
author | Gael Guennebaud <g.gael@free.fr> | 2010-06-26 23:15:06 +0200 |
---|---|---|
committer | Gael Guennebaud <g.gael@free.fr> | 2010-06-26 23:15:06 +0200 |
commit | 931027f31be7ffa50389d7c9e82b0ce99434e500 (patch) | |
tree | 3a3e4a676d08d4eb656990747c0a8aa213d8a112 /bench/check_cache_queries.cpp | |
parent | d8b1ce664b10d5cfd5be3497c57134be07f43916 (diff) |
add a utilility to debug cpuid, and makes sure we get 0 if we query an unsupported cpuid function
Diffstat (limited to 'bench/check_cache_queries.cpp')
-rw-r--r-- | bench/check_cache_queries.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/bench/check_cache_queries.cpp b/bench/check_cache_queries.cpp new file mode 100644 index 000000000..ca5bbf9a0 --- /dev/null +++ b/bench/check_cache_queries.cpp @@ -0,0 +1,129 @@ + +#define EIGEN_INTERNAL_DEBUG_CACHE_QUERY +#include <iostream> +#include "../Eigen/Core" + +using namespace Eigen; +using namespace std; + +#define DUMP_CPUID(CODE) {\ + int abcd[4]; \ + abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0;\ + EIGEN_CPUID(abcd, CODE, 0); \ + std::cout << "The code " << CODE << " gives " \ + << (int*)(abcd[0]) << " " << (int*)(abcd[1]) << " " \ + << (int*)(abcd[2]) << " " << (int*)(abcd[3]) << " " << std::endl; \ + } + +int main() +{ + cout << "Eigen's L1 = " << ei_queryL1CacheSize() << endl; + cout << "Eigen's L2/L3 = " << ei_queryTopLevelCacheSize() << endl; + int l1, l2, l3; + ei_queryCacheSizes(l1, l2, l3); + cout << "Eigen's L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; + + #ifdef EIGEN_CPUID + + ei_queryCacheSizes_intel(l1, l2, l3); + cout << "Eigen's intel L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; + ei_queryCacheSizes_amd(l1, l2, l3); + cout << "Eigen's amd L1, L2, L3 = " << l1 << " " << l2 << " " << l3 << endl; + + int abcd[4]; + int string[8]; + char* string_char = (char*)(string); + + // vendor ID + EIGEN_CPUID(abcd,0x0,0); + string[0] = abcd[1]; + string[1] = abcd[3]; + string[2] = abcd[2]; + string[3] = 0; + cout << "vendor id = " << string_char << endl; + + // dump Intel direct method + { + l1 = l2 = l3 = 0; + int cache_id = 0; + int cache_type = 0; + do { + abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0; + EIGEN_CPUID(abcd,0x4,cache_id); + cache_type = (abcd[0] & 0x0F) >> 0; + int cache_level = (abcd[0] & 0xE0) >> 5; // A[7:5] + int ways = (abcd[1] & 0xFFC00000) >> 22; // B[31:22] + int partitions = (abcd[1] & 0x003FF000) >> 12; // B[21:12] + int line_size = (abcd[1] & 0x00000FFF) >> 0; // B[11:0] + int sets = (abcd[2]); // C[31:0] + int cache_size = (ways+1) * (partitions+1) * (line_size+1) * (sets+1); + + cout << "cache[" << cache_id << "].type = " << cache_type << "\n"; + cout << "cache[" << cache_id << "].level = " << cache_level << "\n"; + cout << "cache[" << cache_id << "].ways = " << ways << "\n"; + cout << "cache[" << cache_id << "].partitions = " << partitions << "\n"; + cout << "cache[" << cache_id << "].line_size = " << line_size << "\n"; + cout << "cache[" << cache_id << "].sets = " << sets << "\n"; + cout << "cache[" << cache_id << "].size = " << cache_size << "\n"; + + cache_id++; + } while(cache_type>0); + } + + + // dump everything + std::cout << endl <<"Raw dump:" << endl; + DUMP_CPUID(0x0); + DUMP_CPUID(0x1); + DUMP_CPUID(0x2); + DUMP_CPUID(0x3); + DUMP_CPUID(0x4); + DUMP_CPUID(0x5); + DUMP_CPUID(0x6); + DUMP_CPUID(0x80000000); + DUMP_CPUID(0x80000001); + DUMP_CPUID(0x80000002); + DUMP_CPUID(0x80000003); + DUMP_CPUID(0x80000004); + DUMP_CPUID(0x80000005); + DUMP_CPUID(0x80000006); + DUMP_CPUID(0x80000007); + DUMP_CPUID(0x80000008); + #else + cout << "EIGEN_CPUID is not defined" << endl; + #endif + return 0; +} +#if 0 +#define FOO(CODE) { \ + EIGEN_CPUID(abcd, CODE); \ + std::cout << "The code " << CODE << " gives " \ + << (int*)(abcd[0]) << " " << (int*)(abcd[1]) << " " \ + << (int*)(abcd[2]) << " " << (int*)(abcd[3]) << " " << std::endl; \ + } + + + int abcd[5]; + abcd[4] = 0; +// for (int a = 0; a < 5; a++) { +// cpuid(abcd,a); +// std::cout << "The code " << a << " gives " +// << abcd[0] << " " << abcd[1] << " " +// << abcd[2] << " " << abcd[3] << " " << abcd[4] << std::endl; +// } + + FOO(0x1); std::cerr << (char*)abcd << "\n"; + FOO(0x2); + FOO(0x2); + FOO(0x2); + FOO(0x3); std::cerr << (char*)abcd << "\n"; + FOO(0x80000002); std::cerr << (char*)abcd << "\n"; + FOO(0x80000003); std::cerr << (char*)abcd << "\n"; + FOO(0x80000004); std::cerr << (char*)abcd << "\n"; + FOO(0x80000005); std::cerr << (char*)abcd << "\n"; + FOO(0x80000006); std::cerr << (char*)(abcd) << "\n"; + std::cerr << "L2 : " << (abcd[2] >> 16) << "KB\n"; +// FOO(0x80000019); std::cerr << (char*)(abcd) << "\n"; + FOO(0x8000001A); std::cerr << (char*)(abcd) << "\n"; + + #endif
\ No newline at end of file |