https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Problem-with-orgqr-for-full-Q/m-p/788464#M1994 <DIV id="_mcePaste">Hey Guys,<BR /><BR />This is a 'Complete the reference manual' thread.<BR /><BR />There is a very important information missing in ?orgqr reference manual.</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">If we are interested in computing all 'm' columns of Q using</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">?orgqr(m, m, p, a, lda, tau, work, lwork, info)</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">the second dimension of array 'a' --&gt;MUST&lt;-- be at least 'm', so it can store a 'm' by 'm' matrix. Otherwise the result will be wrong and there will be some serious memory leaks.</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">Please add this information to your reference manual, both html and pdf.<BR /><BR />Cheers</DIV> Fri, 06 Jul 2012 07:32:51 GMT Fernando_Moura 2012-07-06T07:32:51Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Problem-with-orgqr-for-full-Q/m-p/788464#M1994 <DIV id="_mcePaste">Hey Guys,<BR /><BR />This is a 'Complete the reference manual' thread.<BR /><BR />There is a very important information missing in ?orgqr reference manual.</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">If we are interested in computing all 'm' columns of Q using</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">?orgqr(m, m, p, a, lda, tau, work, lwork, info)</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">the second dimension of array 'a' --&gt;MUST&lt;-- be at least 'm', so it can store a 'm' by 'm' matrix. Otherwise the result will be wrong and there will be some serious memory leaks.</DIV><DIV id="_mcePaste"></DIV><DIV id="_mcePaste">Please add this information to your reference manual, both html and pdf.<BR /><BR />Cheers</DIV> Fri, 06 Jul 2012 07:32:51 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Problem-with-orgqr-for-full-Q/m-p/788464#M1994 Fernando_Moura 2012-07-06T07:32:51Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Problem-with-orgqr-for-full-Q/m-p/788465#M1995 Dear Fernando,<DIV></DIV><DIV>Let me quotethe manual for ?orgqr:</DIV><DIV></DIV><DIV><P>"The second dimension of<VAR>a</VAR>must be at least max(1,<VAR>n</VAR>)"</P><P>And n = m in the case.</P><P>So, information is already in reference manual.</P></DIV> Fri, 06 Jul 2012 07:50:56 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Problem-with-orgqr-for-full-Q/m-p/788465#M1995 Aleksandr_Z_Intel 2012-07-06T07:50:56Z