I need to do iterative more than 1000 simulation of a job with just small change in each run, so i do not want to check for warnings and errors in each run, as it is taking A LOT OF TIME, and directly just submit and run the analysis each time..
impossible...you can't change the way a code works that you've not written...it is same as asking how to compile a source code without running syntax checks...however depending upon the type of "small change" you might be able to use *Restart and reduce time
It is possible, you can call a script from the DOS command line for example c:/abaqus cae noGUI=C:\Temp\ejemplo.py. I also have called scripts iteratively from matlab.Other option is writing the input file and make changes in it, and run it from the DOS command line.