<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><P>Hello,</P>
<P> I use the default dtol(1.0E+5), in my view, only when residual norm is greater than</P>
<P>dtol, the DIVERGED_DTOL occurs(||rk||>dtol*||b||). But in my project, it is not. The information is:</P>
<P>349 KSP Residual norm 3.697892503779e-01 <BR>350 KSP Residual norm 1.104685840662e+02 <BR>351 KSP Residual norm 1.199213228986e+02 <BR>352 KSP Residual norm 1.183644579434e+02 <BR>353 KSP Residual norm 1.234968225554e+02 <BR>354 KSP Residual norm 2.882557881065e-01 <BR>355 KSP Residual norm 2.170676916299e+02 <BR>356 KSP Residual norm 5.764266225925e+00 <BR>357 KSP Residual norm 1.701448294063e+04 <BR>Linear solve did not converge due to DIVERGED_DTOL iterations 357</P>
<P> When iteration=357, the residual norm is 1.7e+4,it is less than dtol. Is it right?</P>
<P> Thanks.<BR> <BR> Jim</P>
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