<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255);display:inline !important">Dear Sir or Madam,</span>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
<br>
</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
<br>
</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
I'm currently learning how to run CI-NEB simulations, but I found that my NEB calculations were really slow. There's only one iteration finished in 23 hours. I tried to change some parameters including MAX_SCF and EPS_SCF, and remove the DFT-D3, but they didn't
help. I wonder if you know how to solve this kind of problem? My input file is attached below.</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
<br>
</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
Thanks in advance!</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
<br>
</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
<br>
</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
Best,</div>
<div style="color:rgba(0, 0, 0, 0.87);font-family:Roboto, RobotoDraft, Helvetica, Arial, sans-serif;font-size:14px;background-color:rgb(255, 255, 255)">
Xiao Wang</div>
<br>
</div>
</body>
</html>