From 82a8f1342e61c2f8a8739f77b118b46693cea1f9 Mon Sep 17 00:00:00 2001
From: Chulwoo Jung <chulwoo@bnl.gov>
Date: Mon, 6 Apr 2026 13:35:43 -0400
Subject: [PATCH] Adding Lanczos parameter file in examples directory

---
 examples/Example_krylov_schur.cc |  3 ++-
 examples/LanParams.xml           | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 examples/LanParams.xml

diff --git a/examples/Example_krylov_schur.cc b/examples/Example_krylov_schur.cc
index 11f8a9fc4..df6e06ede 100644
--- a/examples/Example_krylov_schur.cc
+++ b/examples/Example_krylov_schur.cc
@@ -351,6 +351,7 @@ int main (int argc, char ** argv)
     KrylovSchur KrySchur (Dwilson, UGrid, resid,EvalImNormSmall);
     KrySchur(src[0], maxIter, Nm, Nk, Nstop);
 //    KrySchur(src[0], maxIter, Nm, Nk, Nstop,&shift);
+    std::cout << GridLogMessage << "KrylovSchur evec.size= " << KrySchur.evecs.size()<< std::endl;
 #else
     int Nblock=4;
     Nblock=LanParams.Nblock;
@@ -362,8 +363,8 @@ int main (int argc, char ** argv)
     KrySchur(src, maxIter, Nm, Nk, Nstop,Nblock,true,if_verify);
 //    HarmonicBlockKrylovSchur KrySchur (Dwilson, UGrid, resid,shift,EvalImNormSmall);
 //    KrySchur(src, maxIter, Nm, Nk, Nstop,Nblock,true);
+    std::cout << GridLogMessage << "BlockKrylovSchur evec.size= " << KrySchur.evecs.size()<< std::endl;
 #endif
-  std::cout << GridLogMessage << "evec.size= " << KrySchur.evecs.size()<< std::endl;
 
   src[0]=KrySchur.evecs[0];
   std::cout << GridLogMessage << "KrySchur.evecs= "<< KrySchur.evecs.size() <<std::endl;
diff --git a/examples/LanParams.xml b/examples/LanParams.xml
new file mode 100644
index 000000000..41239a09c
--- /dev/null
+++ b/examples/LanParams.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<grid>
+  <LanczosParameters>
+    <mass>0</mass>
+    <mstep>-0.025</mstep>
+    <M5>1.8</M5>
+    <Ls>48</Ls>
+    <Nstop>80</Nstop>
+    <Nk>100</Nk>
+    <Np>100</Np>
+    <ReadEvec>0</ReadEvec>
+    <maxIter>1000</maxIter>
+    <Nblock>4</Nblock>
+    <verify>0</verify>
+    <resid>1e-10</resid>
+    <ChebyLow>1</ChebyLow>
+    <ChebyHigh>100</ChebyHigh>
+    <ChebyOrder>51</ChebyOrder>
+  </LanczosParameters>
+</grid>