fix bug, 1 fix cuda oom, 2 fix choose a window size 400 that is [2, 0] (#2075)

Nixon

2024-09-14 1af68ba6ffc21d4dc3bd5f01cda656def97e361c

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#include "yaml-cpp/null.h"
 
namespace YAML {
_Null Null;
 
bool IsNullString(const std::string& str) {
  return str.empty() || str == "~" || str == "null" || str == "Null" ||
         str == "NULL";
}
}