56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
inline void pauser(){
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/// a portable way to pause a program
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std::string dummy;
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std::cout << "Press enter to continue...";
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std::getline(std::cin, dummy);
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}
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void FillMatrices(std::vector<std::vector<double>>& matBlock, std::mt19937_64& PRNG, std::uniform_real_distribution<double>& rngdist, const blasint randomMatSize, const uint32_t numConcurrentThreads, const uint32_t numMat){
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for(uint32_t i=0; i<numMat; i++){
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for(uint32_t j = 0; j < static_cast<uint32_t>(randomMatSize*randomMatSize); j++){
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matBlock[i][j] = rngdist(PRNG);
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}
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}
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for(uint32_t i=numMat; i<(numConcurrentThreads*numMat); i+=numMat){
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for(uint32_t j=0; j<numMat; j++){
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matBlock[i+j] = matBlock[j];
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}
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}
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}
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void FillVectors(std::vector<std::vector<double>>& vecBlock, std::mt19937_64& PRNG, std::uniform_real_distribution<double>& rngdist, const blasint randomMatSize, const uint32_t numConcurrentThreads, const uint32_t numVec){
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for(uint32_t i=0; i<numVec; i++){
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for(uint32_t j = 0; j < static_cast<uint32_t>(randomMatSize); j++){
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vecBlock[i][j] = rngdist(PRNG);
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}
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}
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for(uint32_t i=numVec; i<(numConcurrentThreads*numVec); i+=numVec){
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for(uint32_t j=0; j<numVec; j++){
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vecBlock[i+j] = vecBlock[j];
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}
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}
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}
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std::mt19937_64 InitPRNG(){
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std::random_device rd;
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std::mt19937_64 PRNG(rd()); //seed PRNG using /dev/urandom or similar OS provided RNG
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std::uniform_real_distribution<double> rngdist{-1.0, 1.0};
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//make sure the internal state of the PRNG is properly mixed by generating 10M random numbers
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//PRNGs often have unreliable distribution uniformity and other statistical properties before their internal state is sufficiently mixed
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for (uint32_t i=0;i<10000000;i++) rngdist(PRNG);
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return PRNG;
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}
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void PrintMatrices(const std::vector<std::vector<double>>& matBlock, const blasint randomMatSize, const uint32_t numConcurrentThreads, const uint32_t numMat){
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for (uint32_t i=0;i<numConcurrentThreads*numMat;i++){
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std::cout<<i<<std::endl;
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for (uint32_t j = 0; j < static_cast<uint32_t>(randomMatSize); j++){
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for (uint32_t k = 0; k < static_cast<uint32_t>(randomMatSize); k++){
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std::cout<<matBlock[i][j*randomMatSize + k]<<" ";
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}
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std::cout<<std::endl;
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}
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std::cout<<std::endl;
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}
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}
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