https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Can-t-get-correct-output-while-trying-the-RCI-Preconditioned/m-p/878875#M9311 <P><FONT size="1">Theexample codewritten in C is given in the file "fgmres_no_precon_c.c". I've created a new project to execute this example. But it can't give the correct output as described in the document. I am still ckecking to see what's wrong.I've noticed a problem: mkl_dcsrgemv(&amp;cvar, &amp;ivar, A, ia, ja, expected_solution, rhs); This line intends to initialize the right hand side through matrix-vector product, but "rhs" is not changed(initalized) afterexecuting this line.It seems that the function doesn't work well.. And if I initializerhsby declaring double rhs<N>={-1,1,0,3,2},I still geta wrongsolution computed by FGMRES solver.It reallymakes me feelconfused. Pls help me and thx for your help.</N></FONT></P> Tue, 06 Mar 2007 11:15:33 GMT cocla 2007-03-06T11:15:33Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Can-t-get-correct-output-while-trying-the-RCI-Preconditioned/m-p/878875#M9311 <P><FONT size="1">Theexample codewritten in C is given in the file "fgmres_no_precon_c.c". I've created a new project to execute this example. But it can't give the correct output as described in the document. I am still ckecking to see what's wrong.I've noticed a problem: mkl_dcsrgemv(&amp;cvar, &amp;ivar, A, ia, ja, expected_solution, rhs); This line intends to initialize the right hand side through matrix-vector product, but "rhs" is not changed(initalized) afterexecuting this line.It seems that the function doesn't work well.. And if I initializerhsby declaring double rhs<N>={-1,1,0,3,2},I still geta wrongsolution computed by FGMRES solver.It reallymakes me feelconfused. Pls help me and thx for your help.</N></FONT></P> Tue, 06 Mar 2007 11:15:33 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Can-t-get-correct-output-while-trying-the-RCI-Preconditioned/m-p/878875#M9311 cocla 2007-03-06T11:15:33Z