caiyu/nextpnr
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add "randomize-seed" command-line option

Browse Source
This commit is contained in:
Maik Merten 2018-11-19 19:45:12 +01:00
parent 1851ebb1c6
commit e167043e73
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
common/command.cc
View File

@ -102,6 +102,7 @@ po::options_description CommandHandler::getGeneralOptions()
#endif
general.add_options()("json", po::value<std::string>(), "JSON design file to ingest");
general.add_options()("seed", po::value<int>(), "seed value for random number generator");
general.add_options()("randomize-seed,r", "randomize seed value for random number generator");
general.add_options()("slack_redist_iter", po::value<int>(), "number of iterations between slack redistribution");
general.add_options()("cstrweight", po::value<float>(), "placer weighting for relative constraint satisfaction");
general.add_options()("pack-only", "pack design only without placement or routing");
@ -138,6 +139,15 @@ void CommandHandler::setupContext(Context *ctx)
ctx->rngseed(vm["seed"].as<int>());
}
if (vm.count("randomize-seed")) {
srand(time(NULL));
int r;
do {
r = rand();
} while(r == 0);
ctx->rngseed(r);
}
if (vm.count("slack_redist_iter")) {
ctx->slack_redist_iter = vm["slack_redist_iter"].as<int>();
if (vm.count("freq") && vm["freq"].as<double>() == 0) {