FaultModel.hh revision 8946
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Enabling 367741Sgblack@eecs.umich.edu * System-Level Modeling of Variation-Induced Faults in Networks-on-Chip. 377741Sgblack@eecs.umich.edu * Proceedings of the 48th Design Automation Conference (DAC'11) 384040Ssaidi@eecs.umich.edu */ 394040Ssaidi@eecs.umich.edu 404040Ssaidi@eecs.umich.edu#ifndef __MEM_RUBY_NETWORK_FAULT_MODEL_HH__ 414040Ssaidi@eecs.umich.edu#define __MEM_RUBY_NETWORK_FAULT_MODEL_HH__ 424412Sbinkertn@umich.edu 434040Ssaidi@eecs.umich.edu// tool limitations and fixed inputs 444040Ssaidi@eecs.umich.edu#define MAX_VCs 40 454040Ssaidi@eecs.umich.edu#define MAX_BUFFERS_per_VC 5 464040Ssaidi@eecs.umich.edu#define BASELINE_TEMPERATURE_CELCIUS 71 474040Ssaidi@eecs.umich.edu 487741Sgblack@eecs.umich.edu// C++ includes 494040Ssaidi@eecs.umich.edu#include <string> 504040Ssaidi@eecs.umich.edu 517741Sgblack@eecs.umich.edu// GEM5 includes 524648Sgblack@eecs.umich.edu#include "params/FaultModel.hh" 538442Sgblack@eecs.umich.edu#include "sim/sim_object.hh" 548442Sgblack@eecs.umich.edu 554040Ssaidi@eecs.umich.educlass FaultModel : public SimObject 567741Sgblack@eecs.umich.edu{ 577741Sgblack@eecs.umich.edu public: 587741Sgblack@eecs.umich.edu typedef FaultModelParams Params; 594040Ssaidi@eecs.umich.edu FaultModel(const Params *p); 607741Sgblack@eecs.umich.edu const Params *params() const { return (const Params *)_params; } 617741Sgblack@eecs.umich.edu 627741Sgblack@eecs.umich.edu /************************************************************************/ 634040Ssaidi@eecs.umich.edu /********** THE FAULT TYPES SUPPORTED BY THE FAULT MODEL ***************/ 644040Ssaidi@eecs.umich.edu /************************************************************************/ 654040Ssaidi@eecs.umich.edu 664040Ssaidi@eecs.umich.edu enum fault_type 674040Ssaidi@eecs.umich.edu { 684040Ssaidi@eecs.umich.edu data_corruption__few_bits, 694040Ssaidi@eecs.umich.edu data_corruption__all_bits, 704040Ssaidi@eecs.umich.edu flit_conservation__flit_duplication, 7112234Sgabeblack@google.com flit_conservation__flit_loss_or_split, 724040Ssaidi@eecs.umich.edu misrouting, 734040Ssaidi@eecs.umich.edu credit_conservation__credit_generation, 744040Ssaidi@eecs.umich.edu credit_conservation__credit_loss, 754040Ssaidi@eecs.umich.edu erroneous_allocation__VC, 764040Ssaidi@eecs.umich.edu erroneous_allocation__switch, 774040Ssaidi@eecs.umich.edu unfair_arbitration, 784040Ssaidi@eecs.umich.edu number_of_fault_types 794040Ssaidi@eecs.umich.edu }; 804040Ssaidi@eecs.umich.edu 814040Ssaidi@eecs.umich.edu /************************************************************************/ 824040Ssaidi@eecs.umich.edu /******************** INTERFACE OF THE FAULT MODEL *********************/ 834040Ssaidi@eecs.umich.edu /************************************************************************/ 844040Ssaidi@eecs.umich.edu 857741Sgblack@eecs.umich.edu enum conf_record_format 864040Ssaidi@eecs.umich.edu { 874040Ssaidi@eecs.umich.edu conf_record_buff_per_vc, 887741Sgblack@eecs.umich.edu conf_record_vcs, 894648Sgblack@eecs.umich.edu conf_record_first_fault_type, 908442Sgblack@eecs.umich.edu conf_record_last_fault_type = conf_record_first_fault_type + number_of_fault_types - 1, 918442Sgblack@eecs.umich.edu fields_per_conf_record 924040Ssaidi@eecs.umich.edu }; 934040Ssaidi@eecs.umich.edu 944040Ssaidi@eecs.umich.edu enum temperature_record_format 954040Ssaidi@eecs.umich.edu { 964040Ssaidi@eecs.umich.edu temperature_record_temp, 974040Ssaidi@eecs.umich.edu temperature_record_weight, 984040Ssaidi@eecs.umich.edu fields_per_temperature_record 994040Ssaidi@eecs.umich.edu }; 10012234Sgabeblack@google.com 1014040Ssaidi@eecs.umich.edu struct system_conf 1024040Ssaidi@eecs.umich.edu { 1034040Ssaidi@eecs.umich.edu int vcs; 1044040Ssaidi@eecs.umich.edu int buff_per_vc; 1054040Ssaidi@eecs.umich.edu float fault_type[number_of_fault_types]; 1068442Sgblack@eecs.umich.edu }; 1078442Sgblack@eecs.umich.edu 1084040Ssaidi@eecs.umich.edu int declare_router(int number_of_inputs, 1097741Sgblack@eecs.umich.edu int number_of_outputs, 1107741Sgblack@eecs.umich.edu int number_of_vcs_per_vnet, 1117741Sgblack@eecs.umich.edu int number_of_buff_per_data_vc, 1124040Ssaidi@eecs.umich.edu int number_of_buff_per_ctrl_vc); 1137741Sgblack@eecs.umich.edu 1147741Sgblack@eecs.umich.edu std::string fault_type_to_string(int fault_type_index); 1157741Sgblack@eecs.umich.edu 1164040Ssaidi@eecs.umich.edu // the following 2 functions are called at runtime, to get the probability 1174040Ssaidi@eecs.umich.edu // of each fault type (fault_vector) or the aggregate fault probability 1184040Ssaidi@eecs.umich.edu // (fault_prob). Note: the probability values are provided by reference 1194040Ssaidi@eecs.umich.edu // (in the variables fault_vector[] & aggregate_fault_prob respectively). 1204040Ssaidi@eecs.umich.edu // Both functions also return a success flag (which is always true if 1214040Ssaidi@eecs.umich.edu // temperature ranges from 0C to 125C) 1224040Ssaidi@eecs.umich.edu 1234040Ssaidi@eecs.umich.edu bool fault_vector(int routerID, 1244040Ssaidi@eecs.umich.edu int temperature, 1254040Ssaidi@eecs.umich.edu float fault_vector[]); 1264040Ssaidi@eecs.umich.edu 1274040Ssaidi@eecs.umich.edu bool fault_prob(int routerID, 1284040Ssaidi@eecs.umich.edu int temperature, 1295736Snate@binkert.org float *aggregate_fault_prob); 1304040Ssaidi@eecs.umich.edu 1314040Ssaidi@eecs.umich.edu // for debugging purposes 1324040Ssaidi@eecs.umich.edu 1334040Ssaidi@eecs.umich.edu void print(void); 1344040Ssaidi@eecs.umich.edu 1354040Ssaidi@eecs.umich.edu private: 1364350Sgblack@eecs.umich.edu std::vector <system_conf> configurations; 1374040Ssaidi@eecs.umich.edu std::vector <system_conf> routers; 1384040Ssaidi@eecs.umich.edu std::vector <int> temperature_weights; 1395096Sgblack@eecs.umich.edu}; 1404040Ssaidi@eecs.umich.edu 1415736Snate@binkert.org#endif // __MEM_RUBY_NETWORK_FAULT_MODEL_HH__ 1425096Sgblack@eecs.umich.edu