https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/question-about-number-of-eigenvalues-found-w-dfeast-scsrev/m-p/1002926#M18651 <P>hi guys,</P> <P>&nbsp;</P> <P>just curious about the 'm' integer when using feast.</P> <P>currently i know what the 'bottom eigenvector' will be (it's the unit vector with eigenvalue 0), so i specify the last eigenvector to ensure the correct solution is found.</P> <P>in the end, the eigensolver finds exactly one less than the total number of eigenvalues being requested. i.e. if i request 151 eigenvectors, and i've specified the bottom one, it says 150 eigenvectors are found.</P> <P>i just want to ensure that this behaviour is correct, as it seems i have 151 total eigenvectors (150 of which were 'found', the last of which was a 'guess').&nbsp;</P> <P>&nbsp;</P> <P>&nbsp;</P> <P>&nbsp;</P> Fri, 15 May 2015 00:11:25 GMT Gagan 2015-05-15T00:11:25Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/question-about-number-of-eigenvalues-found-w-dfeast-scsrev/m-p/1002926#M18651 <P>hi guys,</P> <P>&nbsp;</P> <P>just curious about the 'm' integer when using feast.</P> <P>currently i know what the 'bottom eigenvector' will be (it's the unit vector with eigenvalue 0), so i specify the last eigenvector to ensure the correct solution is found.</P> <P>in the end, the eigensolver finds exactly one less than the total number of eigenvalues being requested. i.e. if i request 151 eigenvectors, and i've specified the bottom one, it says 150 eigenvectors are found.</P> <P>i just want to ensure that this behaviour is correct, as it seems i have 151 total eigenvectors (150 of which were 'found', the last of which was a 'guess').&nbsp;</P> <P>&nbsp;</P> <P>&nbsp;</P> <P>&nbsp;</P> Fri, 15 May 2015 00:11:25 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/question-about-number-of-eigenvalues-found-w-dfeast-scsrev/m-p/1002926#M18651 Gagan 2015-05-15T00:11:25Z