https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Pivot-threshold-for-getrf-fcns/m-p/1085891#M22978 <P>Is there any documentation that explains that this threshold is? &nbsp;Is there any external control? &nbsp;We are seeing far more pivoting using these functions that our own code.</P> Wed, 24 Feb 2016 12:04:59 GMT Ben_Held 2016-02-24T12:04:59Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Pivot-threshold-for-getrf-fcns/m-p/1085891#M22978 <P>Is there any documentation that explains that this threshold is? &nbsp;Is there any external control? &nbsp;We are seeing far more pivoting using these functions that our own code.</P> Wed, 24 Feb 2016 12:04:59 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Pivot-threshold-for-getrf-fcns/m-p/1085891#M22978 Ben_Held 2016-02-24T12:04:59Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Pivot-threshold-for-getrf-fcns/m-p/1085892#M22979 <P>Hi,</P> <P style="margin: 0in 0in 0pt;"><SPAN style="color: rgb(31, 73, 125);"><FONT face="Calibri" size="3">There isn't any threshold in getrf. The algorithm is just looking for the maximal element in a column and places it to diagonal before factorizing this column.</FONT></SPAN></P> <P style="margin: 0in 0in 0pt;">&nbsp;</P> <P style="margin: 0in 0in 0pt;"><SPAN style="color: rgb(31, 73, 125);"><FONT face="Calibri" size="3">--Vipin</FONT></SPAN></P> <P style="margin: 0in 0in 0pt;">&nbsp;</P> Fri, 26 Feb 2016 04:42:46 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Pivot-threshold-for-getrf-fcns/m-p/1085892#M22979 VipinKumar_E_Intel 2016-02-26T04:42:46Z