add cpu number check

Cargo.lock

 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.15"
@@ -432,6 +434,7 @@ dependencies = [
  "fastrand",
  "libc",
  "log",
+ "num_cpus",
  "petgraph",
  "rand",
  "rayon",

Cargo.toml

@@ -17,3 +17,4 @@ fastrand = "1.4.1"
 clap = "3.0.0-beta.2"
 rayon = "1.5"
 libc = "0.2"
+num_cpus = "1.13"

src/main.rs

@@ -55,6 +55,11 @@ fn main() {
         .arg(Arg::new("channel").about("channel"))
         .get_matches();
 
+    let cpus = num_cpus::get();
+    let cpus_physical = num_cpus::get_physical();
+    println!("using cpu number: {}, physical cpu number: {}", cpus, cpus_physical);
+
+
     let xn = matches.value_of("xn").unwrap().parse::<usize>().unwrap();
     let zm = matches.value_of("zm").unwrap().parse::<usize>().unwrap();
     let measure_rounds = matches
@@ -83,6 +88,7 @@ fn main() {
         m_correct[0] = 1. - pm;
         let mut m_error = vec![0.; 256];
         m_error[0] = pm;
+        log::info!("pure measurement error: {} {}", m_correct[0], m_error[0]);
         (m_correct, m_error)
     } else {
         load_channel_coeffs_from_file(channel)
@@ -95,6 +101,7 @@ fn main() {
     // m_error[0] = pm;
 
     let measure_model = error::MeasureNoiseModel::new(m_correct, m_error);
+    log::info!("success prob: {}", measure_model.success.prob_sum);
     let result: Vec<usize> = (0..rounds)
         .into_par_iter()
         .map(|_| runner2(xn, zm, measure_rounds, measure_model.clone(), p1))